What is the weather like in San Sebastián right now?
It is currently 19°C in San Sebastián with mainly clear. It feels like 20°C, humidity is 77% and the wind is SSW 4 km/h.
Today (Sunday) reaches a maximum of 22°C and a minimum of 15°C, with 0 mm of rain and 10 hours of sunshine. Sunrise is at 08:16 and sunset at 19:31.
San Sebastián weather tomorrow
Tomorrow (Monday) the maximum temperature in San Sebastián is 23°C and the minimum 16°C. Around 0 mm of rain is expected with 8.4 hours of sunshine, and the chance of rain is 0%. The data is refreshed several times a day through Open-Meteo.
San Sebastián weather this week and next week
Over the coming week the average maximum temperature in San Sebastián sits around 23°C and the average minimum around 17°C. Roughly 12.3 mm of rain is expected, spread across 2 days, with 0 largely sunny days.
The warmest day in the 14 day forecast for San Sebastián is Thursday 15 Oct at 30°C. The coldest night falls on Monday 19 Oct at 9°C. Click any day for hourly detail.
Rain, sunshine and UV in San Sebastián
A daily rainfall total says little on its own: the same 5 mm can be one short downpour or a grey day of drizzle, which is why the hourly chart above is often the more useful of the two. Over the next fortnight the highest UV index for San Sebastián is 4, which is low to moderate.
How reliable is a 14 day forecast?
The first three to five days are generally very accurate. After that the certainty drops off and it is better read as a trend than as an exact daily prediction. Our data comes from Open-Meteo, which combines national weather models — among them the Met Office, DWD and ECMWF — and recomputes them several times a day using measurements from stations worldwide.
Forecast for San Sebastián last updated: 11 October 2026 at 21:30. See also all Spain forecasts and the European weather map.