Lough Arrow water temperature

Lough Arrow, Ballynary · Lake

The current water temperature at Lough Arrow is 17.2 °C (as of August 30, 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.

17.2 °C

Measured: August 30, 2026 · continuously updated

💧 Water 17.2° · ☀️ Air 15.3° · high today 16.4°

Temperature trend of recent weeks

Lough Arrow — Photo: Oliver Dixon · CC BY-SA 2.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 1387 data points since July 3, 2026.

Lowest recorded value: 16.6 °C on July 3, 2026 · highest value: 19.2 °C on July 16, 2026.

Nearby waters

Boyle, Boyle Abbey Bridge · 9.8 km away16.9 °C Lough Gara, Cuppanagh · 13.1 km away16.5 °C Owenmore, Big Bridge · 13.2 km away12.8 °C Lough Allen, Blackrock Lock · 16.9 km away17.7 °C Unshin, Ballygrania · 17.0 km away14.4 °C

Frequently asked questions

Can you swim at Lough Arrow right now?
The current water temperature is 17.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lough Arrow?
Currently 17.2 °C (updated continuously).

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