San Sebastián weather by month & the best time to visit
🇪🇸 Spain · seaside town · oceanic / maritime climate
The best time to visit San Sebastián is July — its sunniest month (Sunshine Score 82/100), with August and September close behind. San Sebastián averages about 2,077 hours of sunshine a year. Daytime highs around 23°C / 73°F and roughly 48 mm of rain in July.
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- Sun hours / year
- 2,077
- Sunniest month
- July
- Peak score
- 82/100
- Rain / year
- 1,070 mm
- Midday UV at peak
- 7 (high)
- Sea at warmest
- 23°C / 73°F
- Population
- 357k
- Elevation
- Sea level
When is the best time to visit San Sebastián?
For sunshine, the best time to visit San Sebastián is July, then August and September. The dullest month is January (23/100, 126 mm of rain). The full month-by-month picture is in the table below.
How sunny is San Sebastián?
San Sebastián gets a moderate 2,077 hours of sunshine a year. 59 Sunshine Score points separate July (82) from January (23), so the month you pick matters. It ranks #37 of 40 destinations in Spain for annual sunshine, below the national median of 2,914 hours. The year's 1,070 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 23 | 12° / 54°F | 8° / 46°F | 126 mm | 1 | 14° / 57°F |
| February | 24 | 12° / 54°F | 8° / 46°F | 95 mm | 2 | 14° / 57°F |
| March | 37 | 14° / 57°F | 9° / 48°F | 90 mm | 3 | 14° / 57°F |
| April | 50 | 16° / 61°F | 11° / 52°F | 86 mm | 4 | 15° / 59°F |
| May | 63 | 18° / 64°F | 13° / 55°F | 82 mm | 6 | 17° / 63°F |
| June | 78 | 22° / 72°F | 17° / 63°F | 68 mm | 6 | 20° / 68°F |
| July | 82 | 23° / 73°F | 18° / 64°F | 48 mm | 7 | 22° / 72°F |
| August | 82 | 24° / 75°F | 19° / 66°F | 51 mm | 6 | 23° / 73°F |
| September | 79 | 22° / 72°F | 17° / 63°F | 64 mm | 5 | 21° / 70°F |
| October | 74 | 20° / 68°F | 15° / 59°F | 94 mm | 3 | 19° / 66°F |
| November | 37 | 15° / 59°F | 11° / 52°F | 149 mm | 1 | 17° / 63°F |
| December | 23 | 12° / 54°F | 9° / 48°F | 117 mm | 1 | 15° / 59°F |
Sea temperature in San Sebastián by month
The sea off San Sebastián is warmest in August at around 23°C / 73°F, and coolest in January at 14°C / 57°F. The water sits at a comfortable 21°C or warmer roughly 3 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See San Sebastián on the interactive sunshine globe →
Nearby places for sunshine
- Biarritz France · 25 km · best in Jul · 2,077 h sun/yr
- Bilbao Spain · 91 km · best in Jul · 1,988 h sun/yr
- Vitoria-Gasteiz Spain · 92 km · best in Jul · 2,314 h sun/yr
- Pau/Pyrénées (Uzein) France · 111 km · best in Jul · 2,105 h sun/yr
- Tarbes/Lourdes/Pyrénées France · 146 km · best in Aug · 2,105 h sun/yr
- Santander Spain · 164 km · best in Jul · 1,954 h sun/yr
Nearest destinations
- Pamplona Spain · 66 km · 2,545 h sun/yr · best in Jul
Head-to-head
How San Sebastián compares month by month: San Sebastián vs Bilbao · San Sebastián vs Vitoria-Gasteiz · San Sebastián vs Santander · San Sebastián vs Pau/Pyrénées (Uzein) · all comparisons
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