Eclipse 12 Aug 2026 · 20:33
Alcorcón
40.346°, -3.825° · 729 m a.s.l.
99.9% of the Sun covered at maximum
Visible · score 50/100 Sun at +7° · 283° WNW
The Sun clears local terrain by 7.04° at peak.
Partial eclipse · 99.9% obscuration
ALCORCÓN · 40.346° N -3.825° W
Photo: RICHTEA · CC BY 3.0 · Wikimedia Commons
In Alcorcón, the Moon covered 99.9% of the Sun.
At 20:33 local time, the Moon took a bite out of the Sun over Alcorcón, covering up to 99.9% of its disc. It didn't become a total or annular eclipse: the Sun kept shining throughout.
The other two eclipses from here
Eclipse 2 Aug 2027
Score 50/ 100
Eclipse visible
The Sun will be 37-41° high, so terrain rules out no city at all: of the 560 assessed, 522 tie on the same score. What decides is being inside the path.
Eclipse 26 Jan 2028
Score 45/ 100
Eclipse visible
See the eclipse from Alcorcón minute by minute
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About Alcorcón
Alcorcón is a municipality in the Community of Madrid located southwest of the capital, in the metropolitan area. With around 172,000 inhabitants and an altitude of 729 metres above sea level, it forms part of the urban ring surrounding Madrid. Its territory extends across the Castilian plateau, with a predominantly flat and urban landscape that offers wide sight lines towards the western horizon.
For this eclipse
On 12 August 2026, Alcorcón will experience a partial solar eclipse. Maximum will occur at 20:32, when the Sun will be 7.4° above the horizon, with a clearance of 7.8° above local topographic terrain: favourable conditions for observation from open areas. As this is a partial eclipse, the Moon will cover a fraction of the Sun's disc without reaching totality; the use of certified solar filters will be necessary throughout the event.
The weather in August
August in Alcorcón is the driest and sunniest month of the year. Average temperature is around 25.7 °C, with daytime highs averaging 32.8 °C and nights around 18.6 °C. The municipality receives over 344 hours of sunshine in August and the probability of clear skies is 83 %. The risk of thunderstorms is moderate, though average rainfall for the month does not exceed 11 mm. Data: AEMET (1991–2020 period).
Past eclipses
The last total solar eclipse visible from Alcorcón occurred on 8 July 1842, more than 180 years ago. More recently, on 3 October 2005 there was an annular eclipse with 90.3 % obscuration and an annular phase lasting just over four minutes. After the eclipses of 2026–2028, the next significant annular eclipse will not arrive until 8 December 2113.
Direction and altitude of the Sun
At the moment of maximum eclipse, the Sun will be 7.4° above the horizon and its azimuth will be 283°, a direction almost due west-northwest. At that altitude, the celestial body will be near sunset, so it is advisable to choose an observation point with a clear western horizon and no obstacles such as buildings or trees that might block the view.
Editorial text by eclipses.app · Data: Wikidata, AEMET, NASA and JPL planetary ephemerides.
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The eclipse from Alcorcón
In Alcorcón, the eclipse reached its maximum at 20:33 local time, with 99.9% of the Sun covered by the Moon.
In Alcorcón, the Sun was 7° above the horizon, toward the WNW. With that much margin above the horizon, any spot with open sky worked.
This area typically sees around 14% median cloud cover at that hour, based on ten years of historical data — not a forecast for this specific eclipse.
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Eclipse schedule in Alcorcón
Local time · Europe/Madrid| Phase | Local time | UTC | Progress | Sun alt. | Sun az. |
|---|---|---|---|---|---|
| C1 — Partial begins | 19:36:53 | 17:36:53 UTC | +17.8° | 274.6° | |
| Maximum | 20:32:32 | 18:32:32 UTC | +7.4° | 283.3° | |
| The Sun sets behind the terrain(terrain event, not an eclipse phase) | 21:12 | 19:12 UTC | +0.4° | 289.6° | |
| C4 — Partial endsnot visible | 21:24:40 | 19:24:40 UTC | -1.6° | 291.6° |
Phases marked with ⛰️ were not seen: the Sun was already hidden behind the real terrain at that moment.
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Eclipse phases
Times in CEST local time
Oriented as seen with the naked eye, zenith up (official ephemerides usually draw it with celestial north up, rotated with respect to this).
Phases shown in red aren't observable: they happen while the Sun is below the horizon.
Location
- Latitude
- 40.3458° N
- Longitude
- 3.8249° W
- Elevation
- 729 m
Eclipse phases
- Eclipse begins
- 19:36:53
- Maximum
- 20:32:32
- Eclipse ends
- 21:24:40
- Sunset (flat horizon)
- 21:16:31
Duration
- Eclipse
- 1h 47m 47s
Values at maximum
- Obscuration
- 99.9%
- Sun altitude
- +7.4°
- Sun azimuth
- 283.3°
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Sun direction and altitude at maximum
It was toward WNW (283.3°)
283.3° WNW
Azimuth at maximum
7.35°
Sun altitude at maximum
0.32°
Terrain horizon
+7.04°
Sun−terrain margin
What the contact points (C1-C4) mean
A solar eclipse is described by four key moments, the contact points between the discs of the Sun and the Moon:
- C1First contact: the Moon touches the edge of the Sun and the partial eclipse begins.
- C2Second contact: the Moon fully covers the Sun and totality begins.
- C3Third contact: the Sun reappears and totality ends.
- C4Fourth contact: the Moon leaves the Sun's disc and the eclipse ends.
Where the eclipse is only partial, the Moon never fully covers the Sun: only C1 and C4 occur, with no totality in between.
Peaks near Alcorcón
| Peak | Elevation | Distance | Azimuth |
|---|---|---|---|
| Cerro Centeno | 858 m | 24.5 km | 326° NNW |
| Madroñal | 846.2 m | 24.1 km | 323° NW |
| Cerro de la Osera | 829 m | 24.4 km | 328° NNW |
| Los Llanos 2In the Sun's direction | 817 m | 24.9 km | 305° NW |
| El Manchón | 796 m | 24.8 km | 332° NNW |
| Cabeza Aguda | 760 m | 23.3 km | 317° NW |
| Cerro de la Porra | 759 m | 24.4 km | 337° NNW |
| La Isabela | 757 m | 24.4 km | 336° NNW |
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The August sky
Avg. temp.
25.7°C
Max / min
32.8° / 18.6°
Precipitation
10.8 mm
Storm risk
Medium
Station MADRID, CUATRO VIENTOS, 5 km away · Period 1991-2020 · Source: AEMET
14%Historical average cloud cover
P25 — clearer days · 0%Median cloud cover · 14%P75 — cloudier days · 35%
10-year average over 70 samples: the 3 days before and after 12 August, at the same eclipse hour · Source: ERA5 (ECMWF)
Cloud forecast
Full cloud-cover forecast for eclipse day, including the hour-by-hour outlook toward the sun. Available with PRO.
See plansOther eclipses seen from Alcorcón
- Last total eclipseJuly 8, 1842184 years ago
- Last annular eclipseOctober 3, 200521 years ago
- Next annular eclipseDecember 8, 2113
Solar eclipses computed from astronomical ephemerides for the city's coordinates.
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Frequently asked questions about the eclipse in Alcorcón
Was the eclipse of August 12, 2026 visible from Alcorcón?
Yes, partial eclipse: the Sun was 99.9% covered at maximum from Alcorcón.
What time was the eclipse maximum in Alcorcón?
Maximum occurred at 20:32 local time (18:32 UTC) in Alcorcón.
Which direction was the Sun in during the eclipse from Alcorcón?
The Sun was toward the WNW (azimuth 283°), 7° above the horizon at maximum from Alcorcón.
Was Alcorcón a good place to watch the eclipse?
Alcorcón was a good option (score 50/100): all eclipse phases were visible, though not the regional optimum.
Do I need special glasses to watch the eclipse?
Yes, you need ISO 12312-2 certified eclipse glasses during every partial phase. Regular sunglasses do NOT protect. Glasses can only be removed during the totality phase (when the Sun is fully covered); never during annular or partial eclipses. Pages flagged "visible" assume a clear horizon, not a viewing recommendation.
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