Lough Neagh water temperature

Lough Neagh, Washing Bay · Lake

The current water temperature at Lough Neagh is 18.2 °C (as of August 31, 2026, source: DAERA/NIEA).

Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.

18.2 °C

Measured: August 31, 2026 · continuously updated

💧 Water 18.2° · ☀️ Air 14.0° · high today 16.4°

Temperature trend of recent weeks

Nearby waters

Mountain Water, Glaslough · 25.5 km away15.2 °C Lough Neagh, Toome · 30.5 km away18.2 °C Lough Neagh, Rea's Wood, Antrim · 35.2 km away16.9 °C Blackwater, Cappog Bridge · 35.7 km away15.0 °C Fane, Clarebane · 44.8 km away17.2 °C

More measuring points: Lough Neagh

Toome18.2 °C Rea's Wood, Antrim16.9 °C

Frequently asked questions

Can you swim at Lough Neagh right now?
The current water temperature is 18.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lough Neagh?
Currently 18.2 °C (updated continuously).

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