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Photo: David Dixon · CC BY-SA 2.0

Water temperature in Ireland

Blackwater 15.1 °C, Atlantic 17.1 °C, Deel 14.8 °C. The coldest spot is John's River, Adelphi Quay at 7.2 °C. As of September 20, 2026, 392 locations from official monitoring networks.

20.8 °C
warmest spot · Owennacurra, Bailick Road
7.2 °C
coldest · John's River, Adelphi Quay
14.1 °C
average of all spots
392
locations

Updated on September 20, 2026

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The warmest spot of each kind of water

Regions

Ireland, region by region

8 regions, each with today's range and its best-known spots. Tap one to open the region's list.

Right now

392 spots, 3 kinds of water

22 lakes352 rivers18 coasts & beaches

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About the data

Beyond temperature, this page carries 9 official bathing-water ratings, tides for 17 coastal spots, water level or discharge at 377 gauges and wave height at 11 buoys.

All spots

By region, with today's reading

Blackwater16 spots
Atlantic12 spots
Deel12 spots
Suir11 spots
Shannon9 spots
Lee9 spots
Barrow8 spots
Nore7 spots
Other waters and lidos308 spots
Bandon15.5 °C
Anner14.4 °C
Doonbeg14.4 °C
Ballysadare14.4 °C
Sneem14.3 °C
and 188 more spots in the app

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All 392 spots with history, BrrScore and alerts, free in the app.

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