Saimaa water temperature

Saimaa, Lappeenranta · Lake

The current water temperature at Saimaa is 17.5 °C (as of August 31, 2026, source: official monitoring networks).

Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.

17.5 °C

Measured: August 31, 2026 · continuously updated

💧 Water 17.5° · ☀️ Air 18.2° · high today 20.9°

Temperature trend of recent weeks

Saimaa — Photo: Presse03 · CC BY-SA 3.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 59 data points since July 4, 2026.

Lowest recorded value: 17.3 °C on August 25, 2026 · highest value: 23.4 °C on July 13, 2026.

Nearby waters

Ala-Rieveli, Heinola · 114.6 km away17.5 °C Haukivesi, Oravi · 116.3 km away16.6 °C Kyyvesi, Haukivuori · 118.5 km away16.6 °C Jääsjärvi, Hartola · 130.6 km away17.0 °C Päijänne, Sysmä · 148.2 km away18.0 °C

Frequently asked questions

Can you swim at Saimaa right now?
The current water temperature is 17.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Saimaa?
Currently 17.5 °C (updated continuously).

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