What is the weather like in San Sebastián right now?
It is currently 27°C in San Sebastián with clear and sunny. It feels like 27°C, humidity is 50% and the wind is NNW 11 km/h.
Today (Saturday) reaches a maximum of 27°C and a minimum of 17°C, with 0 mm of rain and 12 hours of sunshine. Sunrise is at 07:28 and sunset at 20:48.
San Sebastián weather tomorrow
Tomorrow (Sunday) the maximum temperature in San Sebastián is 25°C and the minimum 20°C. Around 0 mm of rain is expected with 8.2 hours of sunshine, and the chance of rain is 13%. 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 26°C and the average minimum around 18°C. Roughly 0 mm of rain is expected, spread across 0 days, with 3 largely sunny days.
The warmest day in the 14 day forecast for San Sebastián is Wednesday 9 Sept at 34°C. The coldest night falls on Thursday 3 Sept at 15°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 6 — high enough to warrant sun protection in the middle of the day.
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: 29 August 2026 at 14:25. See also all Spain forecasts and the European weather map.