Eclipse 12 Aug 2026 · 20:29
Castellar del Vallès
41.617°, 2.083° · 299 m a.s.l.
99.6% of the Sun covered at maximum
Hidden by terrain · score 38/100 Sun at +4° · 286° WNW
Local terrain rises 2.21° above the Sun at peak.
Partial eclipse · 99.6% obscuration
CASTELLAR DEL VALLÈS · 41.617° N 2.083° E
Photo: CC BY-SA 3.0 · Wikimedia Commons
In Castellar del Vallès, the Moon covered 99.6% of the Sun.
At 20:29 local time, the Moon took a bite out of the Sun over Castellar del Vallès, covering up to 99.6% 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 50/ 100
Blocked by terrain
See the eclipse from Castellar del Vallès minute by minute
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About Castellar del Vallès
Castellar del Vallès is a municipality in the Vallès Occidental region, in the province of Barcelona, within the autonomous community of Catalonia. It sits at 299 metres altitude, on the foothills of the Sant Llorenç del Munt massif, northwest of the Barcelona metropolitan area. With nearly 24,000 inhabitants, the town combines a consolidated urban core with extensive forested areas, sheltered by the natural parks that surround it to the north and west.
For this eclipse
On 12 August 2026, Castellar del Vallès will experience a partial solar eclipse with its maximum occurring at 20:28 local time. At that moment, the Sun will be just 4.1° above the horizon, with an azimuth of 286°, corresponding to an almost pure west-northwest direction. The margin between the Sun's altitude and the local topographic horizon is only 0.1°, so any obstruction in that direction—trees, buildings, or terrain—can block the view.
The weather in August
According to AEMET data for the 1991-2020 period, August is the warmest month of the year in Castellar del Vallès: average temperature 24.3 °C, highs reaching 30.3 °C and lows of 18.1 °C. Average monthly precipitation stands at 44.7 mm, with a storm risk classified as high. August afternoons often see the development of cumulonimbus clouds over the nearby massifs, so the evolution of the sky in the hours before the eclipse will be decisive for observing conditions.
Past eclipses
The last total eclipse visible from Castellar del Vallès occurred on 8 July 1842, 184 years ago, with a totality phase of barely 59 seconds. Decades later, on 11 November 1901, an annular eclipse covered just over 82% of the solar disc with an annular duration of 4 minutes and 24 seconds. After the eclipses of the 2026-2028 cycle, the next significant annular eclipse over this area will not occur until 13 July 2075.
Direction and altitude of the Sun
At the moment of maximum eclipse, the Sun will occupy an azimuth of 286° and an altitude of 4.1° above the horizon. This position corresponds to looking toward the west-northwest, almost in the direction of sunset with a slight inclination to the north. Given that the Sun will be so close to the horizon, it is advisable to find a location with clear horizon toward that direction—without tree canopies, rooftops, or terrain elevations blocking the last few degrees above the horizon line.
Editorial text by eclipses.app · Data: Wikidata, AEMET, NASA and JPL planetary ephemerides.
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The eclipse from Castellar del Vallès
In Castellar del Vallès, the eclipse reached its maximum at 20:29 local time, with 99.6% of the Sun covered by the Moon.
In Castellar del Vallès, the Sun was 4° above the horizon, toward the WNW. But local terrain blocked the Sun before the eclipse ended: a nearby viewpoint with a clear horizon would have worked better.
This area typically sees around 18% median cloud cover at that hour, based on ten years of historical data — not a forecast for this specific eclipse.
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Don't miss it
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Eclipse schedule in Castellar del Vallès
Local time · Europe/Madrid| Phase | Local time | UTC | Progress | Sun alt. | Sun az. |
|---|---|---|---|---|---|
| C1 — Partial begins | 19:34:42 | 17:34:42 UTC | +13.9° | 277.7° | |
| The Sun sets behind the terrain(terrain event, not an eclipse phase) | 20:16 | 18:16 UTC | +6.4° | 284.3° | |
| Maximumnot visible | 20:28:58 | 18:28:58 UTC | +4.1° | 286.4° | |
| C4 — Partial endsnot visible | 21:20:04 | 19:20:04 UTC | -4.4° | 294.9° |
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
- 41.6167° N
- Longitude
- 2.0833° E
- Elevation
- 299 m
Eclipse phases
- Eclipse begins
- 19:34:42
- Maximum
- 20:28:58
- Eclipse ends
- 21:20:04
- Sunset (flat horizon)
- 20:55:33
Duration
- Eclipse
- 1h 45m 22s
Values at maximum
- Obscuration
- 99.7%
- Sun altitude
- +4.1°
- Sun azimuth
- 286.4°
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Sun direction and altitude at maximum
It was toward WNW (286.4°)
286.4° WNW
Azimuth at maximum
4.09°
Sun altitude at maximum
6.30°
Terrain horizon
-2.21°
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 Castellar del Vallès
| Peak | Elevation | Distance | Azimuth |
|---|---|---|---|
| Sant Jeroni | 1237.6 m | 22.6 km | 267° W |
| l'Eco Superior | 1223.1 m | 23.0 km | 267° W |
| Miranda dels Ecos | 1222.7 m | 23.1 km | 267° W |
| Eco d'en Nubiola | 1219.3 m | 23.1 km | 267° W |
| Agulla Lluís Estasen | 1209 m | 23.1 km | 267° W |
| el Moro | 1206.2 m | 22.3 km | 266° W |
| Eco Occidental | 1200.2 m | 23.1 km | 267° W |
| Roca 311 | 1197.5 m | 22.7 km | 267° W |
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The August sky
Avg. temp.
24.3°C
Max / min
30.3° / 18.1°
Precipitation
44.7 mm
Storm risk
High
Station CALDES DE MONTBUI, 7 km away · Period 1991-2020 · Source: AEMET
18%Historical average cloud cover
P25 — clearer days · 6%Median cloud cover · 18%P75 — cloudier days · 63%
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 Castellar del Vallès
- Last total eclipseJuly 8, 1842184 years ago
- Last annular eclipseNovember 11, 1901125 years ago
- Next annular eclipseJuly 13, 2075
Solar eclipses computed from astronomical ephemerides for the city's coordinates.
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Frequently asked questions about the eclipse in Castellar del Vallès
Was the eclipse of August 12, 2026 visible from Castellar del Vallès?
Geometrically yes (99.6% obscuration), but the local terrain blocked the Sun before the eclipse ended from Castellar del Vallès.
What time was the eclipse maximum in Castellar del Vallès?
Maximum occurred at 20:28 local time (18:28 UTC) in Castellar del Vallès.
Which direction was the Sun in during the eclipse from Castellar del Vallès?
The Sun was toward the WNW (azimuth 286°), 4° above the horizon at maximum from Castellar del Vallès.
Was Castellar del Vallès a good place to watch the eclipse?
Castellar del Vallès was not the best choice: local terrain blocked the Sun before the eclipse ended. A nearby viewpoint with a clear horizon would have offered a better view.
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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