Porvoo 7-Day Snow Forecast

Porvoo Long-Range Snow Forecast Updated today

ECMWF IFS

GFS

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Updated 20 September 2026 14:41 CDT

Long-Range Snow Forecast for Porvoo

Long-range (14 to 45 days) from 20 September.

For Forecast detail, see below.

Porvoo Snow Forecast Highlights

When will there be fresh snow in Porvoo?

Porvoo Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (33m)
Next Snow?
There is no snow currently in the forecast for Porvoo.

Long-range Snow Outlook for Porvoo

Snowfall

Snow Line

Max 18℃
Min 7℃

Snow unlikely

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Porvoo Long-Range (2 weeks+) Snow Forecast Outlook

Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.

16 Day Weather and Snow Forecast for Porvoo from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Sun 20	Light rain showers.	Max 18℃ Min 11℃
Mon 21	Rain showers.	Max 16℃ Min 9℃
Tue 22	Clear sky.	Max 15℃ Min 8℃
Wed 23	Light rain showers.	Max 15℃ Min 8℃
Thu 24	Drizzle.	Max 16℃ Min 11℃
Fri 25	Light drizzle.	Max 15℃ Min 10℃
Sat 26	Cloudy.	Max 14℃ Min 7℃

No significant snowfall is forecast for this period.

This Snow Forecast for Porvoo, Finland gives the predicted Snowfall and Freezing Levels for the next week.

The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Porvoo, on any given piste or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.

Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.

Porvoo Snow Forecast updated at 14:41 CDT, next update expected 20:00 CDT.

Ensemble forecast for Porvoo, Finland at 10m

Daily Mean Temperature (yellow line is control)

Daily Total Precipitation (blue line is control)

What are Forecast Ensembles ? Multiple forecasts from running the same weather model with slightly different inputs. The prominent line (the 'control') is the model output from standard inputs, the thinner lines are the variations. Plotted together, they show a range of possible outcomes; the closer they are, the higher the confidence.

How to read Long Range Ensemble Forecasts

These forecasts are from ECMWF EC46, a long-range, low-resolution (area) model. They may not accurately reflect local conditions and should be read as area forecasts, indicating whether the coming weeks are likely to be warmer, colder, wetter, or drier than average.

What to look for?

Temperatures trending downward at the same time as precipitation spikes upward... means snow!

Lines close together indicate a high confidence, while wider spreads signal uncertainty.

Snow Reliability

Porvoo generally enjoys reliable snow conditions, with an average snow depth of 30-50 cm during peak season. For the latest snow information, including current conditions, be sure to visit J2Ski.

Off-Piste Safety in Porvoo

Before skiing or snowboarding off-piste in Porvoo, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.