Lough Allen, Blackrock Lock · Lake
The current water temperature at Lough Allen is 19.6 °C (as of July 18, 2026, source: official monitoring networks).
Can you swim at Lough Allen right now?
The current water temperature is 19.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Lough Allen?
Currently 19.6 °C (updated continuously).