Santiago de Compostela Weather in September
What's the weather like in Santiago de Compostela (Galicia) in September 2025?
The climate in Santiago de Compostela during September can be summarized as mild and damp.
September is in the fall / autumn in Santiago de Compostela and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 13°C (55°F) is normal.
| Daytime temperature | 22.3°C 72.1°F |
|---|---|
| Nightly temperature | 12.7°C 54.9°F |
| Average temperature | 17.5°C 63.5°F |
| Daily sunshine | 6.7 hrs |
| Avg rainfall | 105 mm 4.1 ins |
| Rainy days | 13 days |
| Sea temperature | 18.6°C 65.5°F |
| Humidity | 76% |
| Windspeed | 13.7kph 9 mph |
On average September is the 4th driest month of the year in Santiago de Compostela with around 105mm 4.1 inches of rain making it a damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.7 hours of sunshine per day.
September temperatures in Santiago de Compostela
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Santiago de Compostela in September 2025.
Other monthly averages
Best places to visit in September
Santiago de Compostela weather stats
| Hottest month: | August | 23.4°C 74.1°F |
|---|---|---|
| Driest month: | July | 33mm 1.3ins |
| Sunniest month: | August | 8.8hrs |
| Coldest month: | January | 11.7°C 53.1°F |
| Wettest month: | January | 242mm 9.5ins |
© Google
Locations nearby
Top Spain locations
- A Coruña
- Alcúdia
- Alicante
- Almería
- Barcelona
- Benidorm
- Cadiz
- Corralejo
- Girona
- Ibiza
- Las Palmas de Gran Canaria
- Madrid
- Málaga
- Marbella
- Murcia
- Palma
- Playa Blanca
- Playa de las Américas
- Playa del Ingles
- Salou
- San Sebastián
- Santiago de Compostela
- Tarragona
- Torremolinos
- Valencia