The temperatures in Santander in September are comfortable with low of 17°C and and high up to 21°C.
You can expect a few rainy days in Santander during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Santander in September 2025.
If you’re planning to visit Santander in the near future, we highly recommend that you review the 14 day weather forecast for Santander before you arrive.
Temperatures
21° / 17°
Rainy Days
2
Snowy Days
0
Dry Days
28
Rainfall
41
mm
Sun Hours
10.7
Hrs
