The temperatures in Andorra in September are quite cold with temperatures between 5°C and 18°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Andorra. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Please note that Andorra can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Andorra in September 2025.
If you’re planning to visit Andorra in the near future, we highly recommend that you review the 14 day weather forecast for Andorra before you arrive.
Temperatures
18° / 5°
Rainy Days
8
Snowy Days
1
Dry Days
21
Rainfall
107
mm
Sun Hours
11.1
Hrs
