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Warmest sea in United Kingdom in April

914 coastal locations in United Kingdom ranked by their typical April sea temperature. Region-wide average in April: 9.3°C. The top of the list is where to find the warmest swimming this month.

Warmest in April

Isles of Scilly

11.1°C April mean in United Kingdom

Regional April average

9.3°C

across all 914 coastal locations in United Kingdom

Vs annual mean

-2.7°C

below the year-round regional average

What the United Kingdom sea feels like in April

This water is very cold and can cause pain. We don't recommend you swim in this temperature for anything other than very short swims of 5 to 10 minutes unless you are a very experienced cold water swimmer.

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 April fits in the year

April 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 April 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 April

Sorted by the typical April 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 April mean
1 Isles of Scilly Cornwall 11.1°C
2 Saint Mary's Isles of Scilly 11.1°C
3 St. Mary's Isles of Scilly 11.1°C
4 Lizard Point Cornwall 11.1°C
5 Portscatho Cornwall 11.0°C
6 St Just (Cape Cornwall) Cornwall 11.0°C
7 Lostwithiel Cornwall 10.9°C
8 Hugh Town England 10.9°C
9 Tresco Island Cornwall 10.9°C
10 Cargreen Cornwall 10.9°C
11 Devonport Plymouth 10.9°C
12 Jupiter Point Cornwall 10.9°C
13 River Yealm Entrance Devon 10.9°C
14 Saltash Plymouth 10.9°C
15 Turnchapel Plymouth 10.9°C
16 Fowey Cornwall 10.8°C
17 Par England 10.8°C
18 Polperro Cornwall 10.8°C
19 Hope Cove Devon 10.8°C
20 Salcombe Devon 10.8°C
21 Kynance Cove Cornwall 10.8°C
22 Landewednack Cornwall 10.8°C
23 Looe Cornwall 10.8°C
24 Portwrinkle Cornwall 10.8°C
25 Talland Cornwall 10.8°C
Show 25 more ▸
26 Land's End Cornwall 10.8°C
27 Mousehole Cornwall 10.8°C
28 Newlyn Cornwall 10.8°C
29 Penzance Cornwall 10.8°C
30 Porthcurno Cornwall 10.8°C
31 Portreath Cornwall 10.8°C
32 Saint Germans Cornwall 10.8°C
33 Saint Just England 10.8°C
34 Sennen Cove Cornwall 10.8°C
35 Sennen Cornwall 10.8°C
36 Bovisand Devon 10.8°C
37 Hallsands Devon 10.8°C
38 Heybrook Bay Devon 10.8°C
39 Lannacombe Beach Devon 10.8°C
40 Millbrook Cornwall 10.8°C
41 Noss Mayo Devon 10.8°C
42 Plymouth Cornwall 10.8°C
43 Prawl Devon 10.8°C
44 Start Point Devon 10.8°C
45 Torpoint England 10.8°C
46 Wembury Devon 10.8°C
47 Carbis Bay Cornwall 10.8°C
48 Coverack Cornwall 10.8°C
49 Crantock Devon 10.8°C
50 Falmouth Cornwall 10.8°C

Coldest 10 in United Kingdom in April

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

# Location April mean
1 Aberdeen Scotland 7.4°C
2 Newtonhill Scotland 7.4°C
3 Portlethen Scotland 7.4°C
4 Stonehaven Scotland 7.4°C
5 River Don Aberdeen City 7.5°C
6 Newburgh Aberdeenshire 7.5°C
7 Inverbervie Scotland 7.5°C
8 Boddam Scotland 7.6°C
9 Port Erroll Scotland 7.6°C
10 Montrose Scotland 7.6°C

More on this region