Measured offshore, modelled at the beach.
The Hastings buoy measures 17.5 °C, Harehope measures 7.5. 187 spots are measured by a real station; the rest is model and says so. Near-shore buoys for the beaches are next on our list.
48 seas, buoys and model
187 stations with a real thermometer
HastingsEnglish Channel · 3 h ago17.5 °CWest GabbardNorth Sea · 3 h ago16.6 °CRye BayEnglish Channel · 3 h ago16.2 °CDawlish Warren BeachEnglish Channel · 4 h ago16.1 °CDawlishEnglish Channel · 4 h ago16.1 °CPoole BayEnglish Channel · 3 h ago16.1 °CMeadfoot BeachEnglish Channel · 4 h ago16.0 °CBeacon Cove BeachEnglish Channel · 4 h ago16.0 °CPaignton (preston Sands)English Channel · 4 h ago16.0 °CPaignton (paignton Sands)English Channel · 4 h ago16.0 °CCefas WaveNet wave buoys, every 30 minutes, anchored a few miles out. Bournemouth and St Andrews inherit the nearest buoy. Beaches stay modelled until a near-shore feed arrives.
Feeds, and what is next
The Cefas buoys measure a few miles offshore, and the Environment Agency samples bathing waters weekly in summer. No open, live feed measures the water at the beach itself yet. Until that changes, the Open-Meteo marine model is the honest best we have, and we label it as such.
If you run a beach, a lido or a swim club and take the temperature yourself, we will show it with your name on it.
192 spots, warmest first
Two kinds of numbers, both marked
Two kinds of numbers live on this page. The measured ones come from the Cefas WaveNet wave buoys, seventeen thermometers anchored around the coast from Scilly to Orkney, read every 30 minutes and shown with their time. The rest comes from the Open-Meteo marine model: sea-surface temperature computed for each beach, refreshed continuously. It is good at open water and worse in shallow bays, which warm two or three degrees beyond the model on a sunny afternoon. We never present a model value as a measurement, here or in the app.
British sea stays below 20 °C most of the year. Below 15 °C the first minute matters most: enter slowly, control your breathing, never swim alone. The app gives a per-sport call for every spot, model or measured.
553 waters with their own page
Every measured water has a page with all stations, trend and neighbours. The 30 with the most stations:
All 13 lakes in the directory · All 56 rivers in the directory · All 484 beaches in the directory
How warm is the sea around the UK right now?
Right now the warmest measured UK spot is Hastings at 17.5 °C. The full picture — every station with history — is one tap away in the free BrrChecker app.
When is the UK sea warmest?
Late August into September: the sea lags the air by weeks, so the warmest water arrives after the warmest days — a fact only measured data shows honestly.
Where do these values come from?
Official measuring stations around the British and Irish coasts and lakes, each with its measurement time. No estimates.
Check first, then swim.
12,000+ measured stations worldwide with history, BrrScore and alerts, free in the app.
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