Monthly climate guide
Santiago de Compostela weather in September
Expect warm weather in Santiago de Compostela in September: afternoons reach about 24°C (75°F), while nights drop to around 14°C (57°F). Around 46 mm of rain falls over the month (fairly dry), and skies are a mix of sun and cloud. Daytime highs are about the same as August and 4°C warmer than October.
What stands out in September
- September is Santiago de Compostela's third warmest month.
- It's one of the drier months, with about 55% less rain than Santiago de Compostela's average.
- Temperatures are falling — expect highs around 4°C lower by October.
- Santiago de Compostela is usually about 4°C warmer than Cee, 50 km away, in September.
Avg high
24°C
75°F
Avg low
14°C
57°F
Rainfall
46 mm
fairly dry
Humidity
74%
relative
Sky
47%
cloud · a mix of sun and cloud
Santiago de Compostela weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 12°C / 53°F | 6°C / 43°F | 169 mm | 90% | 67% |
| February | 12°C / 54°F | 6°C / 42°F | 118 mm | 88% | 68% |
| March | 14°C / 57°F | 7°C / 44°F | 134 mm | 85% | 60% |
| April | 16°C / 61°F | 8°C / 46°F | 113 mm | 83% | 62% |
| May | 19°C / 66°F | 10°C / 50°F | 70 mm | 81% | 55% |
| June | 21°C / 70°F | 12°C / 53°F | 50 mm | 79% | 53% |
| July | 24°C / 76°F | 14°C / 58°F | 23 mm | 75% | 40% |
| August | 25°C / 77°F | 14°C / 58°F | 44 mm | 74% | 43% |
| September | 24°C / 75°F | 14°C / 57°F | 46 mm | 74% | 47% |
| October | 20°C / 68°F | 12°C / 53°F | 128 mm | 80% | 57% |
| November | 14°C / 58°F | 9°C / 48°F | 169 mm | 88% | 69% |
| December | 13°C / 55°F | 7°C / 45°F | 169 mm | 90% | 70% |
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 Santiago de Compostela?
Compare the months in the chart above to find your ideal window.
Best time to visit Santiago de Compostela →Other Spain cities in September
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Santiago de Compostela weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/spain/santiago-de-compostela/september
<a href="https://weathercompare.eu/weather/spain/santiago-de-compostela/september">Santiago de Compostela weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/spain/santiago-de-compostela" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Santiago de Compostela weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/spain/santiago-de-compostela/september">Santiago de Compostela weather in September</a> – WeatherCompare</p>
Santiago de Compostela in September: quick answers
Is September a good time to visit Santiago de Compostela?
Yes. September is one of the best months for Santiago de Compostela, with highs around 24°C and about 46 mm of rain.
How warm is Santiago de Compostela in September?
Average highs are about 24°C (75°F) and average lows about 14°C (57°F), based on 10 years of daily data.
Does it rain a lot in Santiago de Compostela in September?
Santiago de Compostela typically gets around 46 mm of rain in September — fairly dry.
Figures are long-term averages for the area around Santiago de Compostela (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.