On the night of Thursday the 27th into the early hours of Friday the 28th of August 2026, the full Moon will pass through the darkest part of Earth’s shadow in an event that astronomers are calling one of the most visually dramatic partial lunar eclipses in years.
The eclipse will cover about 96% of the Moon’s visible surface, making it look almost total. At its deepest point, only a thin bright sliver along one edge of the lunar disc will remain in direct sunlight. Everything else will be immersed in Earth’s umbra — the cone of complete shadow where the Sun is entirely blocked — and will glow in the deep copper, amber and red tones that make lunar eclipses among the most visually compelling events in amateur astronomy.
At the moment of greatest eclipse, at 4:13 a.m. Universal Time on August 28, 96.3% of the Moon’s disc will be within Earth’s umbra. The partial phase — the period during which the Moon is visibly darkened — lasts for just under three hours and twenty minutes in total, giving observers at favourable locations a long, unhurried window to watch the shadow’s progression across the lunar surface.
For those of us positioned across the Atlantic — in Martinique, the Azores, Madeira, and the Canary Islands — the geometry of this eclipse is particularly fortunate. The Moon will be well above the horizon throughout the partial phase, in some locations nearly overhead, offering viewing conditions that rival the very best in the world for this event.
Why this lunar eclipse is exceptional
Not all partial lunar eclipses are created equal. The Moon passes through Earth’s shadow roughly twice a year on average, but the depth of each eclipse varies considerably depending on the precise alignment of the Sun, Earth, and Moon at the moment it occurs.
With an umbral magnitude of 0.961, this eclipse falls just short of being classified as total — which requires a magnitude of 1.0 or greater. Only 3.9% of the Moon’s diameter will remain outside Earth’s dark shadow at maximum eclipse. In practical terms, this means the event will look and feel almost indistinguishable from a total eclipse to the naked eye. The characteristic blood-red colouration that makes total eclipses so striking will be visible across nearly the entire lunar disc.
This will be the best lunar eclipse anywhere on Earth until New Year’s Eve 2028. The shallow partial eclipses of January and July 2028 offer nothing comparable in visual terms. If you’re inclined to watch one lunar eclipse before the decade is out, this is the one.
There is also something worth appreciating about the scale of the event itself. The total partial phase lasts 3 hours and 18 minutes, with the penumbral phase extending to over 5 hours and 37 minutes. The progression is slow and deliberate — not a sudden darkening but a gradual, geological transformation of the Moon’s appearance as Earth’s shadow creeps across its surface. It rewards patience, and it rewards watching from the beginning.
What you will actually see
Understanding the sequence of the eclipse helps you know what to look for and when. A lunar eclipse unfolds in distinct stages, each with a different visual character.
Penumbral phase (before the main event)
The eclipse officially begins when the Moon enters Earth’s penumbra — the outer, lighter portion of the shadow where the Sun is only partially blocked. The effect of the penumbra on the Moon’s appearance is subtle, and many observers don’t notice it until the Moon is well into the penumbral zone. Don’t worry if the sky looks normal at first. The eclipse is happening — it’s just building.
Partial phase begins
This is the moment most observers are waiting for. When the Moon’s leading edge crosses into Earth’s umbra — the dark inner shadow — a sharp, curved bite appears to be taken out of the lunar disc. The boundary is immediately obvious because it is the curved shadow of the Earth itself, projected directly onto the Moon’s surface. Astronomers since antiquity used this observation to deduce that the Earth was spherical.
The shadow darkens and expands across the Moon over the next hour and forty minutes, progressively consuming the bright surface.
Maximum eclipse
Less than an hour before greatest eclipse, the part of the Moon still in sunlight will be small enough for observers’ eyes to adapt to the surrounding darkness and perceive the coppery colour of the part of the Moon within the umbra. This is the moment that photographs rarely do justice to — not because cameras can’t capture it, but because the human visual system, dark-adapted and sensitive, perceives a richness of colour and shadow detail that camera sensors render differently.
At maximum, the Moon will appear as an almost entirely darkened disc, glowing in deep red-orange tones, with a thin crescent of brilliant white light along one edge. The contrast between the two regions — the sunlit sliver and the umbral glow — is dramatic and beautiful in a way that is difficult to anticipate if you haven’t seen it before.
The colours explained
The reddish colouration of the eclipsed Moon is not a camera trick or an optical illusion. It is caused by the refraction of sunlight through Earth’s atmosphere. As sunlight passes through the atmosphere at the terminator — the day-night boundary — the shorter blue wavelengths are scattered away (the same effect that makes the sky blue), while the longer red and orange wavelengths are bent around the curvature of the Earth and directed toward the Moon.
What you are seeing, in other words, is the collective light of every sunrise and sunset happening simultaneously around the Earth at the moment of the eclipse — all of it focused onto the Moon’s surface. The exact shade depends on atmospheric conditions: a clear atmosphere produces brighter orange tones, while volcanic dust or high-altitude aerosols can deepen the eclipse toward dark red or even grey-brown.
Lunar eclipse local times by location
All times below are local times for each territory on the night of August 27–28, 2026.
Martinique (Atlantic Standard Time, UTC−4)
Martinique enjoys the most comfortable viewing window of all four locations — the eclipse unfolds in the middle of the night, with the Moon nearly overhead at maximum.
| Phase | Local Time |
|---|---|
| Penumbral eclipse begins | 9:24 p.m. (Aug 27) |
| Partial eclipse begins | 10:33 p.m. (Aug 27) |
| Maximum eclipse | 12:12 a.m. (Aug 28) |
| Partial eclipse ends | 1:52 a.m. (Aug 28) |
| Penumbral eclipse ends | 3:01 a.m. (Aug 28) |
Moon altitude at maximum: approximately 66° above the horizon — nearly two-thirds of the way from the horizon to the zenith. No horizon concerns whatsoever. This is about as good as lunar eclipse viewing conditions get.
Recommended viewpoint: Any location with an open sky will work perfectly in Martinique. For the most memorable setting, consider the southern beaches near Les Salines or an elevated point with an open Atlantic horizon — the contrast of the blood-red Moon above a Caribbean seascape is extraordinary.
Azores (Azores Summer Time, UTC−1)
The entire eclipse is visible from the Azores, with the Moon in a comfortable position throughout the partial phase.
| Phase | Local Time |
|---|---|
| Penumbral eclipse begins | 12:24 a.m. (Aug 28) |
| Partial eclipse begins | 2:33 a.m. (Aug 28) |
| Maximum eclipse | 4:12 a.m. (Aug 28) |
| Partial eclipse ends | 5:52 a.m. (Aug 28) |
| Penumbral eclipse ends | 7:01 a.m. (Aug 28) |
Moon altitude at maximum: approximately 31° above the western horizon. The Moon will be descending through the later phases, making a clear western horizon essential. Observers on elevated ground or open Atlantic-facing viewpoints will have the best conditions.
Recommended viewpoint: The volcanic calderas and elevated viewpoints of São Miguel — particularly around Sete Cidades or Lagoa do Fogo — provide excellent open horizons to the west. The contrast of the eclipsed Moon above the island’s volcanic landscape is well worth the early start.
Madeira (Western European Summer Time, UTC+1)
Madeira will see the complete partial phase, though the Moon will be gradually descending toward the western horizon through the later stages.
| Phase | Local Time |
|---|---|
| Penumbral eclipse begins | 2:24 a.m. (Aug 28) |
| Partial eclipse begins | 3:33 a.m. (Aug 28) |
| Maximum eclipse | 5:12 a.m. (Aug 28) |
| Partial eclipse ends | 6:52 a.m. (Aug 28) |
| Penumbral eclipse ends | 8:01 a.m. (Aug 28) |
Moon altitude at maximum: approximately 28° above the horizon, descending toward the west-southwest. A clear, unobstructed western horizon is important for the later phases and for maximum eclipse itself. The Moon will approach moonset as the partial phase concludes.
Recommended viewpoint: Choose a location on the western or northwestern coast of Madeira with a clear view toward the sea — Ponta do Pargo, the island’s westernmost point, is ideal. Elevated viewpoints above Funchal can also work if the western horizon is unobstructed.
Canary Islands (Western European Summer Time, UTC+1)
The Canary Islands share the same timezone and eclipse timing as Madeira, with excellent viewing conditions particularly from the western islands.
| Phase | Local Time |
|---|---|
| Penumbral eclipse begins | 2:24 a.m. (Aug 28) |
| Partial eclipse begins | 3:33 a.m. (Aug 28) |
| Maximum eclipse | 5:12 a.m. (Aug 28) |
| Partial eclipse ends | 6:52 a.m. (Aug 28) |
| Penumbral eclipse ends | 8:01 a.m. (Aug 28) |
Moon altitude at maximum: approximately 25–32° above the horizon (higher in the western islands — La Palma, La Gomera, El Hierro — than in Tenerife, Gran Canaria, and Lanzarote). The Moon will be in the west-southwest quadrant, setting by the time the penumbral phase concludes.
Recommended viewpoint: Teide National Park in Tenerife offers exceptional conditions — altitude reduces atmospheric interference and the western horizon from the caldera is clear. The elevated interior of Gran Canaria around Bandama or the rural centre provides similarly dark conditions and an unobstructed western view. For the most dramatic setting, the volcanic summits of La Palma or El Hierro offer some of the darkest skies in Europe.
Where to watch the 2026 lunar eclipse
The Moon’s altitude and direction at the time of maximum eclipse determines how much care you need to take with your viewing location.
Martinique observers have the luxury of indifference — at 66° altitude, the Moon is so high that virtually any open outdoor location will work. The priority is darkness and comfort rather than horizon logistics.
Azores, Madeira and Canary Islands observers need to be more deliberate. The Moon will be in the west to west-southwest at maximum, and it will be descending. Any hills, buildings, or tree lines to the west will potentially interrupt your view at the critical moment.
Specific principles to apply regardless of location:
- Arrive early. Set up your viewing location at least thirty minutes before the partial phase begins. This gives you time to dark-adapt and to identify and solve any horizon problems before they matter.
- Look west-southwest. All observers in the Atlantic region should orient themselves with a clear view toward this direction. The Moon moves gradually toward the horizon through the later stages.
- Avoid artificial lighting. Street lighting and phone screens interrupt dark adaptation and reduce your ability to perceive the subtle colour gradations of the eclipsed Moon. If you’re using a phone to check the time, use the minimum brightness setting.
- Higher ground is better ground. Elevation pushes the apparent horizon lower, effectively giving you more usable sky in every direction.
How to watch a lunar eclipse: Equipment and preparation
One of the most liberating facts about lunar eclipses is that they require no special equipment, no protective filters, and no particular technical knowledge to observe safely. Unlike solar eclipses, which can cause permanent eye damage if observed without proper protection, a lunar eclipse is simply the Moon in an unusual light. You can stare directly at it for as long as you like.
Naked eye observation
The naked eye is, in many ways, the ideal instrument for a lunar eclipse. The full disc of the Moon is visible at once, and the progression of the shadow across the surface is immediately apparent without any optical aid. The red colouration at maximum is vivid and unmistakable.
The key variable is dark adaptation. Allow your eyes at least twenty minutes of genuine darkness before the main event. The colours in the eclipsed Moon are real but not garish — they are best appreciated by eyes that have had time to adjust.
Binoculars
A pair of standard 7×50 or 10×50 binoculars transforms the experience considerably without introducing any complexity. At these magnifications, individual craters and mountain ranges on the lunar surface become visible, and the texture of the shadow boundary — the terminator — gains a definition that the naked eye can’t resolve. The reddish glow of the eclipsed region takes on an almost three-dimensional quality when seen through binoculars against the black of deep space.
Hold binoculars against a wall or use a tripod mount if you have one — at maximum magnification, hand tremor is significant and tiring.
Telescope
A small telescope with a low-power eyepiece (giving magnifications of around 50× to 80×) provides the finest view of the eclipse’s progression. The shadow boundary crossing individual crater walls in real time is one of the more remarkable sights in observational astronomy — a direct, physical demonstration of celestial geometry.
Use low magnification rather than high. At high magnification, you see a smaller region of the Moon and the view becomes harder to stabilise. A wide, low-power view that shows the entire disc is more useful for eclipse observation than a close-up of a single region.
Astrophotography tips for the eclipse
The August 2026 eclipse is one of the most photogenic astronomical events of the decade, and it occurs at altitudes and times that are manageable from all four of our Atlantic locations. Here is what you need to know to come away with images worth keeping.
The core challenge: dynamic range
The fundamental difficulty of eclipse photography is that the Moon changes in brightness by several orders of magnitude during the event. The full, uneclipsed Moon is one of the brightest objects in the night sky, requiring fast shutter speeds and low ISO to expose correctly. At maximum eclipse, the dark-red disc may be 10,000 times dimmer, requiring dramatically longer exposures or higher ISO settings.
The solution is to adjust your settings continuously as the eclipse progresses. There is no single correct exposure for the entire event — treat it as a changing target that requires recalibration roughly every fifteen minutes.
Before maximum (partial phases)
While the Moon is still partly bright, expose for the bright portion and let the eclipsed region go dark — this is what the human eye sees, and it makes for compelling images that show the contrast between light and shadow.
- Start with ISO 400–800, f/8–f/11, shutter speed 1/250–1/500 seconds for the bright crescent
- Bracket exposures by ±2 stops to capture both the bright and dark regions in separate frames
- RAW format is essential — you will not recover shadow detail from a JPEG
At maximum eclipse
Now the entire disc is within the umbra and relatively dim. Increase exposure dramatically:
- ISO 800–3200 depending on your camera’s noise performance
- f/5.6 or wider
- Shutter speed 1–4 seconds (at longer focal lengths, even this will trail — use a tracking mount if you have one, or accept slight trailing as an artistic choice)
- The Moon is now a red disc in a dark field — expose to hold the red colour without blowing out the bright limb
Focal length and composition
A focal length of 400–600mm (or a 300mm lens with a 2× extender) fills a significant portion of the frame with the lunar disc. Shorter focal lengths allow you to include the surrounding starfield, which gains visibility as the Moon darkens — a genuinely beautiful compositional option that few photographers consider.
For Martinique observers especially, the opportunity to compose the eclipsed Moon against a Caribbean horizon, above the silhouette of palms or coastal terrain, is rare and worth planning deliberately. Arrive at your chosen location before dark, establish your composition, and be ready when the eclipse deepens.
Composite images
The most striking eclipse images are often composites showing multiple stages of the eclipse across the same sky background. Photograph the same foreground composition at regular intervals — every 15 or 20 minutes — and combine the frames in post-processing to show the shadow’s progression from first contact to maximum to last contact. This requires a fixed camera position for several hours, but the result is immediately comprehensible as a narrative of the event.
The Science Behind Lunar Eclipses
A lunar eclipse occurs when the Sun, Earth, and Moon align precisely enough that the Moon passes through Earth’s shadow. This can only happen during a full moon, when the Moon is on the opposite side of Earth from the Sun. However, full moons don’t produce an eclipse every month because the Moon’s orbit is inclined about 5 degrees relative to Earth’s orbital plane. Most full moons pass slightly above or below the shadow cone. An eclipse happens only when the full moon occurs near one of the two points where the Moon’s orbit crosses Earth’s orbital plane — the nodes.
Umbra and penumbra
Earth’s shadow has two regions. The penumbra is the outer zone, where Earth partially blocks the Sun — like being in the shade of a tree where you can still see the sky through the leaves. The umbra is the inner zone, where Earth completely blocks the Sun — full shadow, comparable to being deep inside a tunnel.
The penumbra is the part of Earth’s shadow where the Sun is only partially covered by Earth. Objects that transit through the Earth’s penumbra would observe the Sun being partially eclipsed by Earth. The umbra is the portion of space where the Sun is completely eclipsed by the Earth’s disc.
Why this eclipse is partial rather than total
The magnitude of this eclipse is 0.93, meaning 93% of the Moon’s diameter passes inside the umbra, while the obscuration — the total area of the Moon’s surface covered — is 96%. For a total eclipse, the entire lunar disc must pass within the umbra. In this case, the alignment is slightly off-centre: the Moon passes deeply into the umbra but not completely. The thin bright sliver that remains at maximum eclipse is the portion still receiving direct sunlight.
The Saros cycle
This eclipse is member 30 of Saros series 138. Eclipses in a given Saros series are separated by 18 years, 11 days, and 8 hours. The previous eclipse in this series occurred on August 16, 2008, and the next will take place on September 7, 2044.
The Saros cycle is one of astronomy’s oldest known periodicity tools — it was used by Babylonian astronomers to predict eclipses thousands of years before the geometry of the solar system was understood. After exactly one Saros period, the Sun, Earth, and Moon return to nearly the same relative positions, and the eclipse repeats with similar characteristics. Each successive eclipse in a Saros series shifts westward in longitude by about 120 degrees, due to the eight-hour offset in the cycle.
What comes next: Upcoming lunar eclipses
For observers in our Atlantic destinations, the immediate future is less spectacular in eclipse terms — but that makes appreciating this event all the more worthwhile.
The August 2026 eclipse is the best lunar eclipse anywhere on Earth until New Year’s Eve 2028. The intervening eclipses in 2027 and early 2028 are either total but visible only from other parts of the world, or shallow partial events with little visual impact. After 2028, a favourable total lunar eclipse visible from the Atlantic region returns in 2029.
This makes the current event unusually significant in the medium-term calendar of observational astronomy. If you are on one of our islands on the night of August 27–28, and the sky is clear, there is no reasonable argument for staying indoors.
Frequently asked questions on the 2026 lunar eclipse
What type of eclipse is happening on August 27–28, 2026?
It is a deep partial lunar eclipse — not a total eclipse, but by some measures the closest thing to one. About 96% of the Moon’s visible surface will be within Earth’s shadow at maximum eclipse, producing the copper and red colouration normally associated with a total eclipse, with only a thin sliver of bright, uneclipsed Moon remaining along one edge.
Do I need special equipment or eye protection to watch it?
No. Unlike solar eclipses, lunar eclipses are completely safe to observe with the naked eye for any duration. No filters, no eclipse glasses, and no telescope are required, though binoculars and small telescopes significantly enhance the experience by revealing crater detail and the texture of the shadow boundary.
Why does the eclipsed Moon turn red?
The red colouration is produced by sunlight refracted through Earth’s atmosphere. Blue wavelengths scatter away, while longer red and orange wavelengths bend around Earth’s curvature and illuminate the Moon from within the shadow. The effect is equivalent to the light of all Earth’s sunrises and sunsets combined, focused onto the lunar surface.
Where is the best place to watch from in Martinique?
Martinique has the most comfortable viewing geometry of all four locations — the Moon is nearly 66° above the horizon at maximum, making any open outdoor location suitable. For the most memorable setting, the southern beaches around Les Salines or elevated points on the island with clear sky in all directions will allow you to appreciate the full darkness of the sky as the Moon dims and the surrounding stars become visible.
Will it be visible from the Azores, Madeira and the Canary Islands?
Yes, the complete partial phase is visible from all three locations. However, the Moon will be closer to the western horizon at maximum eclipse — around 28–31° altitude — making a clear western horizon essential. Observers should position themselves with an open view to the west-southwest and avoid low ground or built-up areas that might interrupt the line of sight. The Moon will continue to descend through the late partial phase and may set before the penumbral eclipse concludes.
Is this a Blood Moon?
Informally, yes. The term “Blood Moon” is popularly used to describe the red colouration of the Moon during a total lunar eclipse, but this eclipse will produce the same effect across 96% of the disc. The darker your sky, the better chance you’ll have of seeing the red colour sooner. From our dark-sky Atlantic locations — particularly away from city lighting — the colouration should be vivid and unmistakable.
Can I photograph the eclipse with a smartphone?
Partially. Smartphones with modern computational photography can capture the bright phases of the eclipse reasonably well, but struggle at maximum when the Moon dims significantly. If you want images of the deep red disc at maximum, a camera with manual exposure controls and the ability to shoot RAW is strongly recommended. A tripod is essential for any camera at the exposure lengths required near maximum eclipse.
Watch it with expert guidance
If you’re on one of our islands on the night of August 27–28 and want to experience the eclipse alongside an astronomical guide who can explain what you’re seeing, help you photograph it, and point out the stars and planets that become visible as the Moon darkens, Atlantic Star Adventures offers guided astronomical experiences from the best dark sky locations across Martinique and the Canary Islands.
An eclipse is among the most dramatic events in observational astronomy, but context transforms it from a visual spectacle into something genuinely understood. The shadow crossing the Moon is the shadow of your planet — you are, in a real sense, watching Earth from space. Having someone to articulate that, and to fill the surrounding darkness with the rest of the sky’s content, is the difference between seeing something beautiful and understanding something true.
The sky is the same from the Caribbean to Macaronesia. We’ll be under it.
