Climate averages 1991–2020
Weather in Finland in May
In May, average daytime highs across the 13 cities listed in Finland range from 10.9°C in Oulu to 14.8°C in Vantaa. Monthly rainfall ranges from 39 mm in Pori to 53 mm in Kuopio.
Long-term climate patterns, not a forecast for a particular trip.
City by city
May in Finland
| City | Average highHigh / low | Average low | Rainfall mm | Rain days |
|---|---|---|---|---|
| Helsinki | 13.1°C6.0°C | 6.0°C | 44 | 8.9 |
| Espoo | 12.9°C6.2°C | 6.2°C | 43 | 8.7 |
| Tampere | 13.2°C5.2°C | 5.2°C | 45 | 9.7 |
| Vantaa | 14.8°C5.9°C | 5.9°C | 44 | 8.9 |
| Oulu | 10.9°C3.8°C | 3.8°C | 48 | 10.0 |
| Turku | 14.4°C5.4°C | 5.4°C | 41 | 8.9 |
| Jyväskylä | 13.5°C5.1°C | 5.1°C | 48 | 10.2 |
| Kuopio | 12.1°C4.4°C | 4.4°C | 53 | 10.0 |
| Lahti | 14.5°C5.6°C | 5.6°C | 48 | 10.0 |
| Pori | 12.5°C5.6°C | 5.6°C | 39 | 7.8 |
| Joensuu | 11.2°C4.4°C | 4.4°C | 49 | 9.3 |
| Kouvola | 14.7°C5.8°C | 5.8°C | 46 | 9.8 |
| Lappeenranta | 14.0°C5.2°C | 5.2°C | 46 | 9.2 |
A rain day is a local calendar day with at least 1 mm of precipitation.