Ala-Rieveli, Heinola · Lake
The current water temperature at Ala-Rieveli is 17.1 °C (as of September 5, 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.
This measurement series includes 46 data points since July 22, 2026.
Lowest recorded value: 17.1 °C on September 5, 2026 · highest value: 20.3 °C on August 2, 2026.
In September, temperatures have ranged between 17.1 °C and 17.6 °C.
The current value is 0.3 °C below the September average of this series.
Can you swim at Ala-Rieveli right now?
The current water temperature is 17.1 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Ala-Rieveli?
Currently 17.1 °C (updated continuously).
How warm is at Ala-Rieveli in September?
In September, the water temperature recently averaged 17.4 °C.
When is the water warmest at Ala-Rieveli?
Across the measurement record, July is on average the warmest month (18.8 °C).