United Kingdom · Atlantic Europe
Durdle Door
Sea
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Air
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UV
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More like this
Climate · monthly averages
Sea temperature by month
30-year averages (1996–2025). Min/Max are typical daily lows and highs, not record extremes.
39°F
43°F
46°F
50°F
54°F
57°F
61°F
64°F
68°F
72°F
January
49.3°F(47°F–51°F)
February
47.6°F(45°F–49°F)
March
47.3°F(45°F–49°F)
April
49.2°F(47°F–51°F)
May
52.6°F(50°F–54°F)
June
57.0°F(55°F–58°F)
July
60.8°F(59°F–63°F)
August
63.2°F(62°F–65°F)
September
63.2°F(62°F–65°F)
October
60.6°F(59°F–62°F)
November
56.6°F(55°F–58°F)
December
52.2°F(50°F–53°F)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MinMin °F | 4746.6 | 4545.2 | 4544.8 | 4747.0 | 5050.1 | 5555.0 | 5959.2 | 6261.9 | 6261.6 | 5959.2 | 5554.8 | 5050.1 |
| AvgAvg °F | 4949.3 | 4847.6 | 4747.3 | 4949.2 | 5352.6 | 5757.0 | 6160.8 | 6363.2 | 6363.2 | 6160.6 | 5756.6 | 5252.2 |
| MaxMax °F | 5150.6 | 4949.4 | 4949.2 | 5150.9 | 5454.2 | 5858.4 | 6362.6 | 6564.9 | 6564.5 | 6262.2 | 5858.5 | 5353.5 |
Warmest in August (63.2°F). Coldest in March (47.3°F). Rarely comfortable for swimming.
About Durdle Door
The Jurassic Coast, UNESCO-listed since 2001, has no more recognisable silhouette than Durdle Door — a natural Portland-limestone arch on the Dorset shore, eroded by the English Channel and rising some 30 metres above the water. Pebble-and-sand Durdle Door Beach curves directly beneath the arch, Man o'War Beach hugs the next cove east with its offshore rocks, and the near-circular Lulworth Cove sits a kilometre further along. Sea temperatures peak at a brisk 16–18 °C from July through September, with Bournemouth airport 45 minutes away via the A35.