Click on a day for an hourly weather forecast
The temperatures in Espoo in September are usually low and can range between 11°C and 15°C.
You can expect about 3 to 8 days of rain in Espoo during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Espoo in September 2025.
If you’re planning to visit Espoo in the near future, we highly recommend that you review the 14 day weather forecast for Espoo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -6° | 7 | 4 | 22 | 84 mm | Awful | Espoo in January |
| February | -2° / -6° | 6 | 5 | 19 | 72 mm | Awful | Espoo in February |
| March | 1° / -3° | 8 | 7 | 18 | 65 mm | Awful | Espoo in March |
| April | 6° / 1° | 7 | 16 | 7 | 54 mm | Awful | Espoo in April |
| May | 13° / 7° | 6 | 24 | 1 | 67 mm | Ok | Espoo in May |
| June | 17° / 11° | 6 | 24 | 0 | 87 mm | Good | Espoo in June |
| July | 21° / 15° | 6 | 25 | 0 | 102 mm | Good | Espoo in July |
| August | 20° / 14° | 7 | 24 | 0 | 118 mm | Ok | Espoo in August |
| September | 15° / 11° | 7 | 23 | 0 | 94 mm | Ok | Espoo in September |
| October | 9° / 6° | 9 | 19 | 3 | 104 mm | Awful | Espoo in October |
| November | 5° / 2° | 9 | 13 | 8 | 94 mm | Awful | Espoo in November |
| December | 1° / -2° | 9 | 6 | 17 | 96 mm | Awful | Espoo in December |