Delayed Winter in Uusimaa: Outlook for 2025–2026

Winter Weather Outlook 2025–2026 – Uusimaa, Finland

Current Conditions (as of November 7, 2025)
Uusimaa has not yet seen snowfall. Daytime temperatures are around 10℃, which is warmer than average. Rainfall is more common than snow. In contrast, Lapland in northern Finland has had snow since mid-October. Winter onset in southern Finland is clearly delayed.

Reasons for Delayed Winter and Reduced Snow

• Persistent warm, moist southwesterly airflow keeps temperatures above freezing, causing rain instead of snow.

• Long-term climate warming has shortened winters, reduced snow cover, and decreased frost days.

• Climate cycles (e.g., La Niña) play some role, but the dominant factors are the warming trend and current atmospheric circulation.

Outlook for Winter 2025–2026

• Temperatures are expected to be 1–2℃ above normal, with December likely the warmest relative to average.

• Precipitation may be near or above normal, but in Uusimaa it will often fall as rain or wet snow, reducing snow cover duration.

• Lapland will likely still see substantial and lasting snow due to colder temperatures.

• Although the overall winter will be milder and wetter, short cold spells are still possible.

Conclusion
Uusimaa is likely to experience a warmer, wetter winter with limited and delayed snow, while northern Finland will see more typical snowy winter conditions.

Reference List (English)

1. YLE – Finnish National Broadcasting, weather news and analysis.

2. FMI – Finnish Meteorological Institute, climate data and forecasting.

3. Ilmasto-opas – Finnish Climate Information Portal, long-term climate change trends.

4. ECMWF – European Centre for Medium-Range Weather Forecasts, seasonal climate outlook.

5. NOAA – National Oceanic and Atmospheric Administration, global climate trends.

6. Foreca – Finnish weather forecasting service.

7. MTV Uutiset – Finnish media covering winter weather reports and analyses.

8. OnTheSnow – European snow conditions and winter trend information platform.