Lough Neagh water temperature

Lough Neagh, Rea's Wood, Antrim · Lake

The current water temperature at Lough Neagh is 16.9 °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.

16.9 °C

Measured: August 31, 2026 · continuously updated

💧 Water 16.9° · ☀️ Air 13.9° · high today 15.2°

Temperature trend of recent weeks

Nearby waters

Lough Neagh, Toome · 15.2 km away18.2 °C Lough Neagh, Washing Bay · 35.2 km away18.2 °C Mountain Water, Glaslough · 60.6 km away15.2 °C Atlantic, Portrush · 61.4 km away15.7 °C Blackwater, Cappog Bridge · 70.9 km away15.0 °C

More measuring points: Lough Neagh

Toome18.2 °C Washing Bay18.2 °C

Frequently asked questions

Can you swim at Lough Neagh right now?
The current water temperature is 16.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lough Neagh?
Currently 16.9 °C (updated continuously).

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