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Warmest sea in United Kingdom in August

914 coastal locations in United Kingdom ranked by their typical August sea temperature. Region-wide average in August: 16.5°C. The top of the list is where to find the warmest swimming this month.

Warmest in August

Bradwell on Sea

19.6°C August mean in United Kingdom

Regional August average

16.5°C

across all 914 coastal locations in United Kingdom

Vs annual mean

+4.5°C

above the year-round regional average

What the United Kingdom sea feels like in August

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

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

Where August fits in the year

August sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve United Kingdom month rankings:

United Kingdom sea temperature map (live)

The map shows today's latest reading at every United Kingdom location. The list below is based on the typical August mean, useful for trip planning weeks or months ahead.

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 United Kingdom locations in August

Sorted by the typical August mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location August mean
1 Bradwell on Sea Essex 19.6°C
2 Bramble Creek Essex 19.6°C
3 Burnham-on-Crouch Essex 19.6°C
4 Colchester Essex 19.6°C
5 Holliwell Point Essex 19.6°C
6 Maldon Essex 19.6°C
7 North Fambridge Essex 19.6°C
8 Osea Island Essex 19.6°C
9 Rochford Essex 19.6°C
10 Shivering Sand Essex 19.6°C
11 Tollesbury Essex 19.6°C
12 Whitaker Beacon Essex 19.6°C
13 Brightlingsea Essex 19.4°C
14 Canterbury Kent 19.4°C
15 Clacton-on-Sea Essex 19.4°C
16 Dovercourt Essex 19.4°C
17 Frinton-on-Sea Essex 19.4°C
18 Herne Bay Kent 19.4°C
19 Holland-on-Sea Essex 19.4°C
20 Jaywick Essex 19.4°C
21 Leigh-on-Sea Essex 19.4°C
22 Manningtree Essex 19.4°C
23 Mersea Island Essex 19.4°C
24 Mistley England 19.4°C
25 Shoeburyness Essex 19.4°C
Show 25 more ▸
26 Southend-on-Sea Essex 19.4°C
27 Tankerton England 19.4°C
28 West Mersea Essex 19.4°C
29 Whitstable Kent 19.4°C
30 Bawdsey Suffolk 19.4°C
31 Harwich International Ferry Terminal Essex 19.4°C
32 Orford Haven Bar Suffolk 19.4°C
33 Woodbridge Suffolk 19.4°C
34 Shivering Sands Kent 19.4°C
35 S.E. Long Sand Canterbury 19.3°C
36 Ipswich Suffolk 19.3°C
37 Folkestone Kent 19.2°C
38 Hythe Kent 19.2°C
39 Leysdown-on-Sea Kent 19.2°C
40 Minster on Sea Kent 19.2°C
41 Sandgate Kent 19.2°C
42 Sheerness England 19.2°C
43 Botany Bay Kent 19.2°C
44 Broadstairs Kent 19.2°C
45 Felixstowe Suffolk 19.2°C
46 Harwich England 19.2°C
47 Margate Kent 19.2°C
48 Ramsgate Kent 19.2°C
49 Sandwich Bay Kent 19.2°C
50 Shotley Gate Suffolk 19.2°C

Coldest 10 in United Kingdom in August

Same data the other way. Helpful if you want to know which United Kingdom coasts to avoid for swimming in August.

# Location August mean
1 Sumburgh Scotland 12.9°C
2 Scalloway Shetland Islands 12.9°C
3 Fair Isle Shetland Islands 12.9°C
4 West Burra Firth Shetland Islands 12.9°C
5 Foula Shetland Islands 12.9°C
6 Bay of Quendale Shetland Islands 13.1°C
7 Sumburgh (Grutness Voe) Shetland Islands 13.1°C
8 Burra Voe (Yell Sound) Shetland Islands 13.1°C
9 Dury Voe Shetland Islands 13.1°C
10 Mid Yell Shetland Islands 13.1°C

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