Finnish Meteorological Institute

Finland summer weather summary and autumn transition

13 clusters · 13 sources · last updated 9 days ago

Latest: Finland to experience unseasonably warm weather in late September

Retrospective data from the Finnish Meteorological Institute confirms that August temperatures remained near normal, broadly 0–1 degree Celsius warmer than the long-term average. However, many residents perceived the sea

Finland autumn weather transition and forecast

12 clusters · 24 sources · last updated 15 days ago

Latest: Finland weather forecast predicts sunny autumn days followed by rain

Following a period of high weather volatility in mid-to-late summer, the weather outlook for late September 2026 indicates a transition into autumn. Forecasts predict pleasant conditions at the start of the week, with