Climate averages 1991–2020
Weather in Finland in August
In August, average daytime highs across the 13 cities listed in Finland range from 17.6°C in Oulu to 20.3°C in Vantaa. Monthly rainfall ranges from 66 mm in Kouvola to 82 mm in Joensuu.
Long-term climate patterns, not a forecast for a particular trip.
City by city
August in Finland
| City | Average highHigh / low | Average low | Rainfall mm | Rain days |
|---|---|---|---|---|
| Helsinki | 19.6°C13.9°C | 13.9°C | 76 | 12.3 |
| Espoo | 19.5°C14.1°C | 14.1°C | 70 | 12.2 |
| Tampere | 19.1°C13.2°C | 13.2°C | 75 | 12.6 |
| Vantaa | 20.3°C13.3°C | 13.3°C | 76 | 12.3 |
| Oulu | 17.6°C12.0°C | 12.0°C | 71 | 12.0 |
| Turku | 20.1°C12.9°C | 12.9°C | 80 | 12.5 |
| Jyväskylä | 18.8°C12.7°C | 12.7°C | 72 | 12.3 |
| Kuopio | 18.3°C12.9°C | 12.9°C | 82 | 12.8 |
| Lahti | 19.6°C12.9°C | 12.9°C | 68 | 11.6 |
| Pori | 19.0°C13.5°C | 13.5°C | 74 | 12.2 |
| Joensuu | 18.1°C13.6°C | 13.6°C | 82 | 13.2 |
| Kouvola | 19.8°C12.9°C | 12.9°C | 66 | 10.9 |
| Lappeenranta | 19.6°C13.1°C | 13.1°C | 75 | 12.4 |
A rain day is a local calendar day with at least 1 mm of precipitation.