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Vantaa Weather by Month
Average temperatures, rainfall and humidity for Vantaa, Finland, month by month, built from OpenWeather’s historical records. Use it to see what a typical Vantaa month looks like before you travel — then check the live Vantaa forecast for the days ahead.
Warmest month
July
22°C average high
Coolest month
January
-7°C average low
Wettest month
August
65 mm of rain
Driest month
January
19 mm of rain
Average temperature and rainfall in Vantaa by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | -2°C | -7°C | -28°C / 7°C | 19 mm | 88% | 16 km/h |
| February | -1°C | -6°C | -26°C / 8°C | 21 mm | 87% | 15 km/h |
| March | 3°C | -4°C | -24°C / 14°C | 33 mm | 80% | 16 km/h |
| April | 8°C | 0°C | -11°C / 21°C | 43 mm | 71% | 15 km/h |
| May | 15°C | 6°C | -4°C / 29°C | 49 mm | 66% | 15 km/h |
| June | 20°C | 11°C | 2°C / 31°C | 57 mm | 69% | 15 km/h |
| July | 22°C | 13°C | 5°C / 32°C | 54 mm | 73% | 13 km/h |
| August | 21°C | 12°C | 5°C / 30°C | 65 mm | 77% | 15 km/h |
| September | 16°C | 9°C | -3°C / 26°C | 47 mm | 82% | 14 km/h |
| October | 9°C | 4°C | -8°C / 17°C | 54 mm | 86% | 17 km/h |
| November | 5°C | 1°C | -15°C / 14°C | 49 mm | 89% | 16 km/h |
| December | 1°C | -3°C | -21°C / 11°C | 34 mm | 89% | 17 km/h |
Best time to visit Vantaa
The most comfortable time to visit Vantaa is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around August, totalling about 525 mm a year.
Travellers who prefer heat should aim for July, when highs average 22°C. August is the month to avoid if rain would spoil your plans — it averages 65 mm, roughly 3× the rainfall of the driest month (January).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Vantaa forecast for what is happening now.