Click on a day for an hourly weather forecast
The temperatures in Vantaa in August are usually low and can range between 14°C and 20°C.
You can expect about 3 to 8 days of rain in Vantaa during the month of August. 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 Vantaa in August 2026.
If you’re planning to visit Vantaa in the near future, we highly recommend that you review the 14 day weather forecast for Vantaa before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -6° | 7 | 4 | 22 | 84 mm | Awful | Vantaa in January |
| February | -2° / -6° | 6 | 5 | 19 | 72 mm | Awful | Vantaa in February |
| March | 1° / -3° | 8 | 7 | 18 | 65 mm | Awful | Vantaa in March |
| April | 6° / 1° | 7 | 16 | 7 | 54 mm | Awful | Vantaa in April |
| May | 13° / 7° | 6 | 24 | 1 | 67 mm | Ok | Vantaa in May |
| June | 17° / 11° | 6 | 24 | 0 | 87 mm | Good | Vantaa in June |
| July | 21° / 15° | 6 | 25 | 0 | 102 mm | Good | Vantaa in July |
| August | 20° / 14° | 7 | 24 | 0 | 118 mm | Ok | Vantaa in August |
| September | 15° / 11° | 7 | 23 | 0 | 94 mm | Ok | Vantaa in September |
| October | 9° / 6° | 9 | 19 | 3 | 104 mm | Awful | Vantaa in October |
| November | 5° / 2° | 9 | 13 | 8 | 94 mm | Awful | Vantaa in November |
| December | 1° / -2° | 9 | 6 | 17 | 96 mm | Awful | Vantaa in December |