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San Sebastian weather

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EuropeanECMWF
9°
Light drizzle
Feels 8° · Wind 2 mph · Humidity 97%
AmericanNOAA GFS
8°
Overcast
Feels 7° · Wind 3 mph · Humidity 86%
GermanDWD ICON
10°
Light rain
Feels 8° · Wind 3 mph · Humidity 74%

Latest for San Sebastian: European (ECMWF): 9° Light drizzle · American (NOAA GFS): 8° Overcast · German (DWD ICON): 10° Light rain.

The weather map: all three models at once

European, American, German side by side around San Sebastian and nearby towns.Live rain radar →
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Hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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10-day forecast, out to 14 days

where the models agree, and where they split

Heading to San Sebastian? San Sebastian, Spain, sits at 43.3°N in a temperate climate zone. Before you lock in outdoor plans, compare how the three global models - European (ECMWF), American (GFS) and German (ICON) - forecast San Sebastian right now. Where they agree you can trust it; the days they split are exactly when a single weather app is least reliable. For a city break, the rain hours below tell you which days to plan indoors.

Best time to visit San Sebastian

The most comfortable time to visit San Sebastian is usually March, April, May and June, when daytime highs sit in the pleasant 16-26°C range and the heaviest November rain is behind you.

San Sebastian weather by month

what to expect in San Sebastian through the year, 1991-2020 normals, Hondarribia Malkarroa (WMO)

Here is San Sebastian's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to San Sebastian by season.

Jan
13°
5°
Cool
Feb
14°
5°
Cool
Mar
16°
8°
Mild
Apr
18°
9°
Mild
May
20°
12°
Mild
Jun
23°
15°
Warm
Jul
24°
18°
Warm
Aug
25°
18°
Warm
Sep
23°
15°
Warm
Oct
21°
12°
Mild
Nov
16°
8°
Mild
Wettest
Dec
14°
6°
Cool

San Sebastian compared with London

30-year averages: daytime highs month by month, rain and sunlight

Warmer through the year

+3°C

average daytime high: San Sebastian 19°C, London 16°C

Rain over a year

+174%

San Sebastian 1,684 mm, London 615 mm

Sunlight vs a clear sky

69% vs 63%

solar energy reaching the ground as a share of a cloudless day, averaged over the year (not sunshine hours)

San SebastianLondonaverage daytime high, °C, 1991-2020
January, London: 9°CJanuary, San Sebastian: 13°C (+4°C)February, London: 9°CFebruary, San Sebastian: 14°C (+5°C)March, London: 12°CMarch, San Sebastian: 16°C (+4°C)April, London: 15°CApril, San Sebastian: 18°C (+3°C)May, London: 18°CMay, San Sebastian: 20°C (+2°C)June, London: 21°CJune, San Sebastian: 23°C (+2°C)July, London: 24°CJuly, San Sebastian: 24°C (±0°C)August, London: 23°CAugust, San Sebastian: 25°C (+2°C)September, London: 20°CSeptember, San Sebastian: 23°C (+3°C)October, London: 16°COctober, San Sebastian: 21°C (+5°C)November, London: 12°CNovember, San Sebastian: 16°C (+4°C)December, London: 9°CDecember, San Sebastian: 14°C (+5°C)

On 30-year averages San Sebastian runs 3°C warmer than London, with every month between ±0°C and +5°C. Over a year it gets 174% more rain than London.

Month by month in numbers
MonthSan SebastianLondonDifferenceSunlight, San SebastianSunlight, London
January13°C9°C+4°C59%58%
February14°C9°C+5°C65%59%
March16°C12°C+4°C69%63%
April18°C15°C+3°C69%67%
May20°C18°C+2°C70%65%
June23°C21°C+2°C73%66%
July24°C24°C±0°C75%67%
August25°C23°C+2°C76%66%
September23°C20°C+3°C78%68%
October21°C16°C+5°C70%62%
November16°C12°C+4°C63%59%
December14°C9°C+5°C62%58%

Daytime highs and lows on this page are 1991-2020 averages. San Sebastian: station normals from Hondarribia Malkarroa (WMO), rain included. London: station normals from London (WMO), rain included. Sunlight vs a clear sky is NASA POWER's long-term average of the solar energy reaching the ground as a share of a cloudless day; it compares cloudiness and is not a count of sunshine hours. London stands in for the UK here; other cities have their own climate tables.

Common questions

When is the best time to visit San Sebastian?
The most comfortable time to visit San Sebastian is usually March, April, May and June, when daytime highs sit in the pleasant 16-26°C range and the heaviest November rain is behind you.
Will it rain in San Sebastian during my trip?
Rain is where forecasts disagree most. Instead of trusting one app, the comparison above lines up the European, American and German models for San Sebastian - check your dates and look for the days they agree; those are the ones you can plan around.
Which forecast is most accurate for San Sebastian?
For destinations abroad we compare three open global models (ECMWF, GFS and ICON) and show you where they disagree, so you can judge the confidence yourself.
How much warmer is San Sebastian than London?
On 30-year averages (1991-2020) the daytime high in San Sebastian is about 3°C warmer than in London (19°C against 16°C), with the monthly gap between 0°C and 5°C.

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