Lough Melvin water temperature
Lough Melvin, Lareen · Lake
The current water temperature at Lough Melvin is 16.7 °C (as of September 1, 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 1435 data points since July 3, 2026.
Lowest recorded value: 15.3 °C on August 24, 2026 · highest value: 26.3 °C on July 15, 2026.
In September, temperatures have ranged between 16.7 °C and 17.2 °C.
The current value is 0.2 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Lough Melvin right now?
The current water temperature is 16.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Lough Melvin?
Currently 16.7 °C (updated continuously).
How warm is at Lough Melvin in September?
In September, the water temperature recently averaged 16.9 °C.
When is the water warmest at Lough Melvin?
Across the measurement record, July is on average the warmest month (19.0 °C).
