Numedalslågen water temperature
Numedalslågen, Holmfoss i Numedalslågen · River
The current water temperature at Numedalslågen is 18.0 °C (as of September 1, 2026, source: official monitoring networks).
A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.
Measurement series & statistics
This measurement series includes 1113 data points since July 3, 2026.
Lowest recorded value: 17.6 °C on August 28, 2026 · highest value: 24.4 °C on July 17, 2026.
In September, temperatures have ranged between 18.0 °C and 18.4 °C.
The current value is 0.2 °C below the September average of this series.
Nearby waters
More measuring points: Numedalslågen
Frequently asked questions
Can you swim at Numedalslågen right now?
The current water temperature is 18.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Numedalslågen?
Currently 18.0 °C (updated continuously).
How warm is at Numedalslågen in September?
In September, the water temperature recently averaged 18.2 °C.
When is the water warmest at Numedalslågen?
Across the measurement record, July is on average the warmest month (21.1 °C).
