BrrChecker

Lough Conn water temperature

Lough Conn, Corryosla · Lake

The current water temperature at Lough Conn is 12.5 °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.

12.5 °C
Measured: September 1, 2026 · continuously updated
💧 Water 12.5° · ☀️ Air 15.9°
Temperature trend of recent weeks
Lough Conn
Photo: Sjaak Kempe from Groningen, The Netherlands · CC BY 2.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 1435 data points since July 3, 2026.

Lowest recorded value: 11.3 °C on July 3, 2026 · highest value: 12.5 °C on August 25, 2026.

Nearby waters

Lough Cullin, Pontoon · 1.6 km away15.2 °CClydagh, Mill Bridge Clydagh · 9.0 km away15.2 °CMoy, Ballylahan · 9.7 km away13.2 °CCastlebar, Turlough · 11.2 km away16.5 °CDeel, Mullenmore Spring · 12.8 km away15.3 °C

Frequently asked questions

Can you swim at Lough Conn right now?
The current water temperature is 12.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lough Conn?
Currently 12.5 °C (updated continuously).

How warm is at Lough Conn in September?
In September, the water temperature recently averaged 12.5 °C.

When is the water warmest at Lough Conn?
Across the measurement record, September is on average the warmest month (12.5 °C).

Open in the BrrChecker app

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