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Warmest sea in United Kingdom in March

914 coastal locations in United Kingdom ranked by their typical March sea temperature. Region-wide average in March: 8.2°C. The top of the list is where to find the warmest swimming this month.

Warmest in March

Isles of Scilly

10.7°C March mean in United Kingdom

Regional March average

8.2°C

across all 914 coastal locations in United Kingdom

Vs annual mean

-3.8°C

below the year-round regional average

What the United Kingdom sea feels like in March

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 March fits in the year

March 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 March 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 March

Sorted by the typical March 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 March mean
1 Isles of Scilly Cornwall 10.7°C
2 Saint Mary's Isles of Scilly 10.7°C
3 St. Mary's Isles of Scilly 10.7°C
4 Lizard Point Cornwall 10.5°C
5 Hope Cove Devon 10.4°C
6 Portscatho Cornwall 10.4°C
7 Salcombe Devon 10.4°C
8 Hallsands Devon 10.4°C
9 Lannacombe Beach Devon 10.4°C
10 Prawl Devon 10.4°C
11 St Just (Cape Cornwall) Cornwall 10.4°C
12 Start Point Devon 10.4°C
13 Hugh Town England 10.3°C
14 Tresco Island Cornwall 10.3°C
15 Cargreen Cornwall 10.3°C
16 Devonport Plymouth 10.3°C
17 Jupiter Point Cornwall 10.3°C
18 River Yealm Entrance Devon 10.3°C
19 Saltash Plymouth 10.3°C
20 Turnchapel Plymouth 10.3°C
21 Lostwithiel Cornwall 10.3°C
22 Greenway Quay Devon 10.3°C
23 Stoke Gabriel (Duncannon) Devon 10.3°C
24 Bantham Devon 10.2°C
25 Bigbury-on-Sea Devon 10.2°C
Show 25 more ▸
26 Bovisand Devon 10.2°C
27 Challaborough Devon 10.2°C
28 Fowey Cornwall 10.2°C
29 Heybrook Bay Devon 10.2°C
30 Kingsbridge Devon 10.2°C
31 Millbrook Cornwall 10.2°C
32 Mothecombe Devon 10.2°C
33 Noss Mayo Devon 10.2°C
34 Par England 10.2°C
35 Plymouth Cornwall 10.2°C
36 Polperro Cornwall 10.2°C
37 Torpoint England 10.2°C
38 Wembury Devon 10.2°C
39 Land's End Cornwall 10.1°C
40 Mousehole Cornwall 10.1°C
41 Newlyn Cornwall 10.1°C
42 Penzance Cornwall 10.1°C
43 Porthcurno Cornwall 10.1°C
44 Saint Just England 10.1°C
45 Sennen Cove Cornwall 10.1°C
46 Sennen Cornwall 10.1°C
47 Beesands Devon 10.1°C
48 Blackpool Devon 10.1°C
49 Blackpool Sands Devon 10.1°C
50 Brixham Devon 10.1°C

Coldest 10 in United Kingdom in March

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

# Location March mean
1 Lowestoft Suffolk 6.4°C
2 Caister-on-Sea Norfolk 6.5°C
3 Gorleston-on-Sea Norfolk 6.5°C
4 Great Yarmouth Norfolk 6.5°C
5 Hemsby Norfolk 6.5°C
6 Winterton-on-Sea Norfolk 6.5°C
7 Balintore Scotland 6.5°C
8 Conon Bridge Scotland 6.5°C
9 Fort Augustus Scotland 6.5°C
10 Fortrose Scotland 6.5°C

More on this region