Eclipse 12 Aug 2026 · 20:27
Donostia / San Sebastián
43.313°, -1.975° · 17 m a.s.l.
99.7% of the Sun covered at maximum
Visible · score 50/100 Sun at +8° · 283° WNW
The Sun clears local terrain by 5.28° at peak.
Partial eclipse · 99.7% obscuration
DONOSTIA / SAN SEBASTIÁN · 43.313° N -1.975° W
Photo: Keta · CC BY-SA 2.5 · Wikimedia Commons
In Donostia / San Sebastián, the Moon covered 99.7% of the Sun.
At 20:27 local time, the Moon took a bite out of the Sun over Donostia / San Sebastián, covering up to 99.7% 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 23/ 100
Blocked by terrain
See the eclipse from Donostia / San Sebastián minute by minute
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About Donostia / San Sebastián
Donostia / San Sebastián is the capital of Gipuzkoa and one of the most populous cities in the Basque Country, with just over 185,000 inhabitants. Located barely 17 meters above sea level, it stretches along the Bay of La Concha on the Cantabrian coast, near the border with France. The city received its charter in 1180 and has historically served as a gateway between the Iberian Peninsula and Europe.
For this eclipse
On August 12, 2026, Donostia / San Sebastián will experience a partial solar eclipse with maximum at 20:27 local time. The Moon will cover a visible portion of the Sun's disk, though it will not reach totality. At that moment, the Sun will be very low in the sky, at just 7.7 degrees altitude, so it is essential to have a clear horizon toward the west-northwest and to use certified solar filters at all times.
The weather in August
August in Donostia / San Sebastián is mild and humid according to AEMET data from 1991–2020. The average temperature hovers around 19.9 °C, with highs of 22.9 °C and lows of 16.8 °C. Average precipitation for the month exceeds 109 mm, and the probability of clear skies stands at around 49%. The risk of thunderstorms is high, which is worth keeping in mind when planning eclipse observations.
Past eclipses
The last great annular eclipse visible from Donostia / San Sebastián took place on April 1, 1764, more than 260 years ago, with an obscuration of 86.9% of the Sun's disk. There is no record of any total eclipse crossing the city. After the eclipses of 2026 and 2028, one will have to wait until February 27, 2082 for another annular eclipse to become visible from this point.
Direction and altitude of the Sun
At the moment of eclipse maximum, at 20:27 on August 12, 2026, the Sun will be at an azimuth of 283°, almost directly toward the west-northwest. Its altitude above the horizon will be only 7.7 degrees, roughly equivalent to the width of a fist at arm's length. Orienting yourself to look northwest from an elevated point with a clear horizon will help you follow the partial phase without obstruction.
Editorial text by eclipses.app · Data: Wikidata, AEMET, NASA and JPL planetary ephemerides.
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The eclipse from Donostia / San Sebastián
In Donostia / San Sebastián, the eclipse reached its maximum at 20:27 local time, with 99.7% of the Sun covered by the Moon.
In Donostia / San Sebastián, the Sun was 8° above the horizon, toward the WNW. With that much margin above the horizon, any spot with open sky worked.
This area typically sees around 38% 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 Donostia / San Sebastián
Local time · Europe/Madrid| Phase | Local time | UTC | Progress | Sun alt. | Sun az. |
|---|---|---|---|---|---|
| C1 — Partial begins | 19:31:47 | 17:31:47 UTC | +17.6° | 274.1° | |
| Maximum | 20:27:22 | 18:27:22 UTC | +7.6° | 283.3° | |
| The Sun sets behind the terrain(terrain event, not an eclipse phase) | 20:56 | 18:56 UTC | +2.8° | 288.0° | |
| C4 — Partial endsnot visible | 21:19:35 | 19:19:35 UTC | -0.9° | 292.1° |
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).
Location
- Latitude
- 43.3128° N
- Longitude
- 1.9750° W
- Elevation
- 17 m
Eclipse phases
- Eclipse begins
- 19:31:47
- Maximum
- 20:27:22
- Eclipse ends
- 21:19:35
- Sunset (flat horizon)
- 21:15:23
Duration
- Eclipse
- 1h 47m 48s
Values at maximum
- Obscuration
- 99.7%
- Sun altitude
- +7.6°
- 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
7.63°
Sun altitude at maximum
2.35°
Terrain horizon
+5.28°
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 Donostia / San Sebastián
| Peak | Elevation | Distance | Azimuth |
|---|---|---|---|
| Eguzkizko Muinoa | 1083 m | 24.8 km | 161° SSE |
| Hernio | 1078 m | 21.4 km | 222° SW |
| Hernio | 1077 m | 21.4 km | 222° SW |
| Aizpel | 1068 m | 21.3 km | 221° SW |
| Petriketa | 1057 m | 24.8 km | 163° SSE |
| Urepel | 1056.69 m | 20.7 km | 164° SSE |
| Arainburu | 1054 m | 23.7 km | 136° SE |
| Aizaran | 1052.16 m | 24.6 km | 163° SSE |
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The August sky
Avg. temp.
19.9°C
Max / min
22.9° / 16.8°
Precipitation
109 mm
Storm risk
High
Station DONOSTIA / SAN SEBASTIÁN, IGELDO, 5 km away · Period 1991-2020 · Source: AEMET
38%Historical average cloud cover
P25 — clearer days · 7%Median cloud cover · 38%P75 — cloudier days · 85%
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 Donostia / San Sebastián
- Last annular eclipseApril 1, 1764262 years ago
- Next annular eclipseFebruary 27, 2082
Solar eclipses computed from astronomical ephemerides for the city's coordinates.
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Frequently asked questions about the eclipse in Donostia / San Sebastián
Was the eclipse of August 12, 2026 visible from Donostia / San Sebastián?
Yes, partial eclipse: the Sun was 99.7% covered at maximum from Donostia / San Sebastián.
What time was the eclipse maximum in Donostia / San Sebastián?
Maximum occurred at 20:27 local time (18:27 UTC) in Donostia / San Sebastián.
Which direction was the Sun in during the eclipse from Donostia / San Sebastián?
The Sun was toward the WNW (azimuth 283°), 8° above the horizon at maximum from Donostia / San Sebastián.
Was Donostia / San Sebastián a good place to watch the eclipse?
Donostia / San Sebastián 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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