Näsijärvi water temperature
Näsijärvi, Kyrönlahti · Lake
The current water temperature at Näsijärvi is 8.9 °C (as of October 15, 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.
Measurement series & statistics
This measurement series includes 59 data points since August 18, 2026.
Lowest recorded value: 7.2 °C on October 13, 2026 · highest value: 18.6 °C on August 29, 2026.
In October, temperatures have ranged between 7.2 °C and 12.5 °C.
The current value is 1.4 °C below the October average of this series.
Nearby waters
Frequently asked questions
Can you swim at Näsijärvi right now?
The current water temperature is 8.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Näsijärvi?
Currently 8.9 °C (updated continuously).
How warm is at Näsijärvi in October?
In October, the water temperature recently averaged 10.3 °C.
When is the water warmest at Näsijärvi?
Across the measurement record, August is on average the warmest month (17.3 °C).
