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The temperatures in Andorra La Vella 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 La Vella. 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 La Vella 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 La Vella in September 2025.
If you’re planning to visit Andorra La Vella in the near future, we highly recommend that you review the 14 day weather forecast for Andorra La Vella before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -7° | 4 | 10 | 17 | 111 mm | Awful | Andorra La Vella in January |
| February | 3° / -7° | 5 | 8 | 17 | 90 mm | Awful | Andorra La Vella in February |
| March | 6° / -5° | 6 | 10 | 15 | 123 mm | Awful | Andorra La Vella in March |
| April | 9° / -2° | 11 | 10 | 10 | 164 mm | Awful | Andorra La Vella in April |
| May | 14° / 2° | 13 | 14 | 5 | 157 mm | Bad | Andorra La Vella in May |
| June | 19° / 6° | 12 | 18 | 0 | 160 mm | Ok | Andorra La Vella in June |
| July | 22° / 8° | 10 | 21 | 0 | 154 mm | Ok | Andorra La Vella in July |
| August | 22° / 8° | 8 | 23 | 0 | 126 mm | Ok | Andorra La Vella in August |
| September | 18° / 5° | 8 | 21 | 1 | 107 mm | Ok | Andorra La Vella in September |
| October | 14° / 2° | 6 | 23 | 2 | 111 mm | Ok | Andorra La Vella in October |
| November | 7° / -3° | 6 | 13 | 11 | 118 mm | Bad | Andorra La Vella in November |
| December | 3° / -5° | 5 | 13 | 13 | 71 mm | Awful | Andorra La Vella in December |