Water temperature in lake Saimaa

This data the coastal lake Saimaa water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current water temperature in lake Saimaa

Water temperature in lake Saimaa today is 17°C. Based on our historical data over a period of ten years, the warmest water in this day in lake Saimaa was recorded in 2024 and was 18°C, and the coldest was recorded in 2022 at 10°C. Water temperature in lake Saimaa is expected to drop to 11.8°C in the next 10 days. September average water temperature in lake Saimaa is 12.5°C, the minimum temperature is 7°C, and the maximum is 18°C.

Throughout the year, the water temperature in lake Saimaa does not rise above 20°C and therefore is not suitable for comfortable swimming. But on some days of June, July, August, the water temperature warms up to 20°C and above. The average water temperature in lake Saimaa in winter reaches 3°C, in spring 5.1°C, in summer the average temperature rises to 16.5°C, and in autumn it is 7.5°C.

lake Saimaa water temperature now

Current temperature and weather

Data in a table show lake Saimaa temperature today (8 September 2025). For more information and forecast for a few days, go to the weather forecast lake Saimaa.

0-3 h	3-6 h	6-9 h	9-12 h
15.9°C	15.2°C	14.9°C	18.7°C

12-15 h	15-18 h	18-21 h	21-24 h
21.5°C	21.8°C	18.4°C	15.3°C

lake Saimaa water temperature by month

These figures shows the average, minimum and maximum monthly water temperature in lake Saimaa. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in lake Saimaa on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in lake Saimaa

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Our report for lake Saimaa is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.