Deel, Crossmolina Weir · River
The current water temperature at Deel is 12.7 °C (as of September 20, 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.
This measurement series includes 1398 data points since July 22, 2026.
Lowest recorded value: 12.7 °C on September 20, 2026 · highest value: 30.1 °C on July 24, 2026.
In September, temperatures have ranged between 12.7 °C and 17.0 °C.
The current value is 2.3 °C below the September average of this series.
Can you swim at Deel right now?
The current water temperature is 12.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Deel?
Currently 12.7 °C (updated continuously).
How warm is at Deel in September?
In September, the water temperature recently averaged 15.0 °C.
When is the water warmest at Deel?
Across the measurement record, July is on average the warmest month (17.9 °C).