Monthly climate guide
San Sebastián weather in October
October in San Sebastián is typically mild, with average daytime highs around 19°C (67°F) and night-time lows near 15°C (58°F). The month usually brings about 89 mm of rain (some rain) and is often cloudy. Daytime highs are 3°C cooler than September and 4°C warmer than November.
What stands out in October
- San Sebastián is usually about 3°C cooler than Alcúdia in October.
- Days and nights are close, only about 5°C apart.
- In San Sebastián, October is mid-autumn.
- Temperatures are falling — expect highs around 4°C lower by November.
Avg high
19°C
67°F
Avg low
15°C
58°F
Rainfall
89 mm
some rain
Humidity
77%
relative
Sky
68%
cloud · often cloudy
San Sebastián weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 11°C / 52°F | 8°C / 46°F | 151 mm | 83% | 78% |
| February | 11°C / 52°F | 7°C / 45°F | 121 mm | 81% | 71% |
| March | 13°C / 56°F | 9°C / 47°F | 101 mm | 81% | 70% |
| April | 15°C / 59°F | 11°C / 51°F | 97 mm | 80% | 71% |
| May | 18°C / 64°F | 13°C / 55°F | 91 mm | 81% | 72% |
| June | 21°C / 69°F | 16°C / 60°F | 85 mm | 81% | 69% |
| July | 23°C / 73°F | 18°C / 65°F | 61 mm | 80% | 65% |
| August | 24°C / 75°F | 19°C / 65°F | 47 mm | 77% | 65% |
| September | 22°C / 72°F | 17°C / 63°F | 62 mm | 76% | 63% |
| October | 19°C / 67°F | 15°C / 58°F | 89 mm | 77% | 68% |
| November | 15°C / 59°F | 11°C / 52°F | 160 mm | 81% | 76% |
| December | 13°C / 55°F | 9°C / 48°F | 129 mm | 82% | 75% |
What to pack for October
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is October a good time to visit San Sebastián?
Compare the months in the chart above to find your ideal window.
Best time to visit San Sebastián →Other Spain cities in October
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San Sebastián weather in October. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/spain/san-sebastian/october
<a href="https://weathercompare.eu/weather/spain/san-sebastian/october">San Sebastián weather in October</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/spain/san-sebastian" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="San Sebastián weather in October"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/spain/san-sebastian/october">San Sebastián weather in October</a> – WeatherCompare</p>
San Sebastián in October: quick answers
Is October a good time to visit San Sebastián?
October is a reasonable time for San Sebastián: highs around 19°C and about 89 mm of rain, though not one of the three best months.
How warm is San Sebastián in October?
Average highs are about 19°C (67°F) and average lows about 15°C (58°F), based on 10 years of daily data.
Does it rain a lot in San Sebastián in October?
San Sebastián typically gets around 89 mm of rain in October — some rain.
Figures are long-term averages for the area around San Sebastián (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.