Alcorcón
40.346°, -3.825° · 729 m a.s.l.
Visible
Partial eclipse · 99.9% obscuration
The Sun clears local terrain by 7.82° at peak.
70/100Good
99.9%
Partial eclipse · 99.9% obscuration
See the eclipse from Alcorcón minute by minute
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Photo: RICHTEA · CC BY 3.0 · Wikimedia Commons
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 astronomy-engine.
Eclipse schedule in Alcorcón
| Phase | UTC | Local time | Sun alt. | Sun az. |
|---|---|---|---|---|
| C1 — Partial begins | 17:36 UTC | 19:36 | +17.8° | 274.6° |
| Maximum | 18:32 UTC | 20:32 | +7.4° | 283.3° |
| C4 — Partial ends | 19:24 UTC | 21:24 | -1.6° | 291.6° |
Sun direction and altitude at C4
Look toward WNW (291.6°)
Azimuth at C4
291.6° WNW
Sun altitude at C4
-1.58°
Terrain horizon
-0.44°
Sun−terrain margin
+7.82°
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 |
Weather in Alcorcón in August
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
Historical cloud cover
P25 — clearer days
23%
Median cloud cover
47%
P75 — cloudier days
70%
Source: ERA5 (ECMWF), 10-year average at the eclipse hour.
Other 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.
Frequently asked questions about the eclipse in Alcorcón
Will the eclipse of August 12, 2026 be visible from Alcorcón?
Yes, partial eclipse: the Sun will be 99.9% covered at maximum from Alcorcón.
What time is the eclipse maximum in Alcorcón?
Maximum occurs at 20:32 local time (18:32 UTC) in Alcorcón.
Which direction to look to watch the eclipse from Alcorcón?
Look WNW (azimuth 283°); the Sun will be 7° above the horizon at maximum from Alcorcón.
Is Alcorcón a good place to watch the eclipse?
Alcorcón is a good option (score 70/100): all eclipse phases are 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.
Nearby cities
All cities in Community of Madrid →Where to stay in Alcorcón
For the August 12 eclipse. Recommended stay: Aug 10–14, 2026.
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