Santiago de Compostela weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: June – September
What is the weather like in Santiago de Compostela in September?
In September, Santiago de Compostela is warm: daytime highs average 22 °C, and nights cool down to about 13 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 72 mm in total. All in all, September is an excellent month for a holiday in Santiago de Compostela.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 89 | 80 | 62 |
| Day | 24° | 22° | 18° |
| Night | 15° | 13° | 11° |
| Sun | 8 h | 6 h | 4 h |
| Rain days | 7 | 9 | 14 |
More details for September
- Daylight
- 12 h 34 min08:13 – 20:47
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 56 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Time zone
- UTC+2Europe/Madrid
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %55 %
- Few rainy daysweight 30 %64 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Santiago de Compostela in September: quick answers
Is Santiago de Compostela hot in September?
Warm rather than hot: in September, daytime highs in Santiago de Compostela average 22 °C and nights cool to about 13 °C.
Does it rain much in Santiago de Compostela in September?
Rain is frequent, with about 9 rainy days and 72 mm in total.
Santiago de Compostela month by month
The whole year in Santiago de CompostelaAll destinations: SpainWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences