Monthly climate guide
Santander weather in September
Expect warm weather in Santander in September: afternoons reach about 22°C (72°F), while nights drop to around 17°C (63°F). Around 50 mm of rain falls over the month (some rain), and skies are often cloudy. Daytime highs are about the same as August and 3°C warmer than October.
What stands out in September
- Seasonally, September counts as early autumn in Santander.
- Days and nights are close, only about 5°C apart.
- Santander is usually about 2°C warmer than Reinosa, 60 km away, in September.
- September is Santander's third warmest month.
Avg high
22°C
72°F
Avg low
17°C
63°F
Rainfall
50 mm
some rain
Humidity
72%
relative
Sky
67%
cloud · often cloudy
Santander weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 12°C / 53°F | 8°C / 47°F | 144 mm | 80% | 83% |
| February | 12°C / 53°F | 8°C / 46°F | 130 mm | 79% | 80% |
| March | 13°C / 56°F | 9°C / 47°F | 104 mm | 78% | 76% |
| April | 15°C / 59°F | 10°C / 51°F | 90 mm | 79% | 74% |
| May | 17°C / 63°F | 13°C / 55°F | 63 mm | 79% | 73% |
| June | 20°C / 68°F | 15°C / 59°F | 61 mm | 79% | 71% |
| July | 23°C / 73°F | 18°C / 64°F | 41 mm | 77% | 66% |
| August | 24°C / 75°F | 18°C / 65°F | 32 mm | 72% | 66% |
| September | 22°C / 72°F | 17°C / 63°F | 50 mm | 72% | 67% |
| October | 20°C / 68°F | 15°C / 58°F | 95 mm | 72% | 72% |
| November | 15°C / 60°F | 11°C / 52°F | 145 mm | 77% | 79% |
| December | 13°C / 56°F | 9°C / 49°F | 129 mm | 78% | 80% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A small travel umbrella, just in case
Is September a good time to visit Santander?
Compare the months in the chart above to find your ideal window.
Best time to visit Santander →Other Spain cities in September
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Santander weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/spain/santander/september
<a href="https://weathercompare.eu/weather/spain/santander/september">Santander weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/spain/santander" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Santander weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/spain/santander/september">Santander weather in September</a> – WeatherCompare</p>
Santander in September: quick answers
Is September a good time to visit Santander?
Yes. September is one of the best months for Santander, with highs around 22°C and about 50 mm of rain.
How warm is Santander in September?
Average highs are about 22°C (72°F) and average lows about 17°C (63°F), based on 10 years of daily data.
Does it rain a lot in Santander in September?
Santander typically gets around 50 mm of rain in September — some rain.
Figures are long-term averages for the area around Santander (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.