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Warmest sea in United Kingdom

914 coastal locations in United Kingdom ranked by their year-round average sea temperature. The regional average is 12.0°C. The top of the list shows where to find the warmest water in a typical year. The bottom shows the coldest year-round coasts of the region.

Warmest location

Maseline Pier

13.6°C annual mean in United Kingdom

Regional average

12.0°C

across all 914 United Kingdom coastal locations

Warmest month

August

16.5°C region-wide average

United Kingdom monthly average 8.1°C to 16.5°C
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  • Warmest month August 16.5°C
  • Coldest month February 8.1°C
  • Annual mean 12.0°C
  • Months above 20°C 0 of 12

Month by month across United Kingdom

Sea temperatures in United Kingdom swing from 8.1°C in February to 16.5°C in August on average across every coast we track. That spread of 8°C hides much bigger swings at individual locations.

Want a specific month? Pick one for a dedicated ranking:

United Kingdom sea temperature map

Today's pin colours show the latest daily reading at every United Kingdom location we track. Pick any pin for the location's full page.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest locations in United Kingdom

The warmest coastal locations across all of United Kingdom, sorted by year-round average. Click any place for its 30-day chart, monthly profile, and 10-year history.

# Location Annual mean
1 Maseline Pier Channel Islands 13.6°C
2 Hope Cove Devon 13.6°C
3 Portscatho Cornwall 13.6°C
4 Salcombe Devon 13.6°C
5 Cargreen Cornwall 13.6°C
6 Devonport Plymouth 13.6°C
7 Jupiter Point Cornwall 13.6°C
8 Lizard Point Cornwall 13.6°C
9 Lostwithiel Cornwall 13.6°C
10 River Yealm Entrance Devon 13.6°C
11 Saltash Plymouth 13.6°C
12 Turnchapel Plymouth 13.6°C
13 Isles of Scilly Cornwall 13.5°C
14 Saint Mary's Isles of Scilly 13.5°C
15 St. Mary's Isles of Scilly 13.5°C
16 Hallsands Devon 13.5°C
17 Lannacombe Beach Devon 13.5°C
18 Prawl Devon 13.5°C
19 Start Point Devon 13.5°C
20 Fowey Cornwall 13.5°C
21 Greenway Quay Devon 13.5°C
22 Par England 13.5°C
23 Polperro Cornwall 13.5°C
24 Stoke Gabriel (Duncannon) Devon 13.5°C
25 Bovisand Devon 13.5°C
Show 25 more ▸
26 Heybrook Bay Devon 13.5°C
27 Millbrook Cornwall 13.5°C
28 Noss Mayo Devon 13.5°C
29 Plymouth Cornwall 13.5°C
30 Torpoint England 13.5°C
31 Wembury Devon 13.5°C
32 Looe Cornwall 13.5°C
33 Portwrinkle Cornwall 13.5°C
34 Talland Cornwall 13.5°C
35 Bantham Devon 13.4°C
36 Bigbury-on-Sea Devon 13.4°C
37 Challaborough Devon 13.4°C
38 Kingsbridge Devon 13.4°C
39 Mothecombe Devon 13.4°C
40 Beesands Devon 13.4°C
41 Blackpool Devon 13.4°C
42 Blackpool Sands Devon 13.4°C
43 Brixham Devon 13.4°C
44 Constantine Bay Cornwall 13.4°C
45 Dartmouth Devon 13.4°C
46 Goodrington Devon 13.4°C
47 Kingswear Devon 13.4°C
48 Paignton Devon 13.4°C
49 Slapton Devon 13.4°C
50 Stoke Fleming Devon 13.4°C

Coldest 10 in United Kingdom for contrast

Same data, sorted the other way. Useful if you want to know which United Kingdom coasts stay coldest year-round.

# Location Annual mean
1 Sumburgh Scotland 9.9°C
2 Scalloway Shetland Islands 10.0°C
3 Shetland Shetland Islands 10.0°C
4 Lerwick Scotland 10.0°C
5 Sandwick Scotland 10.0°C
6 Bay of Quendale Shetland Islands 10.1°C
7 Sumburgh (Grutness Voe) Shetland Islands 10.1°C
8 Aberdeen Scotland 10.1°C
9 Newtonhill Scotland 10.1°C
10 Portlethen Scotland 10.1°C

More on this region