Lough Arrow water temperature
Lough Arrow, Ballynary · Lake
The current water temperature at Lough Arrow is 14.0 °C (as of October 13, 2026, source: official monitoring networks).
The station's own sensor has not delivered a reliable value since October 13, 2026 · shown: last reliable measurement.
Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.
Measurement series & statistics
This measurement series includes 1375 data points since August 17, 2026.
Lowest recorded value: 14.0 °C on October 13, 2026 · highest value: 17.7 °C on August 17, 2026.
In October, temperatures have ranged between 14.0 °C and 14.9 °C.
The current value is 0.5 °C below the October average of this series.
Nearby waters
Frequently asked questions
Can you swim at Lough Arrow right now?
The current water temperature is 14.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Lough Arrow?
Currently 14.0 °C (updated continuously).
How warm is at Lough Arrow in October?
In October, the water temperature recently averaged 14.5 °C.
When is the water warmest at Lough Arrow?
Across the measurement record, August is on average the warmest month (17.3 °C).
