South Africa · Cape Town
Boulders Beach
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.
50°F
54°F
57°F
61°F
64°F
68°F
72°F
75°F
January
65.1°F(62°F–68°F)
February
65.0°F(61°F–68°F)
March
63.2°F(60°F–66°F)
April
60.9°F(58°F–63°F)
May
60.7°F(59°F–62°F)
June
59.8°F(59°F–62°F)
July
58.6°F(57°F–60°F)
August
58.5°F(57°F–60°F)
September
59.1°F(57°F–60°F)
October
60.2°F(59°F–61°F)
November
61.9°F(61°F–64°F)
December
64.3°F(62°F–67°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 | 6262.2 | 6160.7 | 6059.8 | 5857.6 | 5958.7 | 5958.5 | 5757.0 | 5757.2 | 5757.5 | 5959.2 | 6161.0 | 6261.8 |
| AvgAvg °F | 6565.1 | 6565.0 | 6363.2 | 6160.9 | 6160.7 | 6059.8 | 5958.6 | 5958.5 | 5959.1 | 6060.2 | 6261.9 | 6464.3 |
| MaxMax °F | 6868.0 | 6867.9 | 6665.7 | 6362.7 | 6262.5 | 6261.7 | 6060.3 | 6059.9 | 6060.4 | 6161.3 | 6463.6 | 6766.7 |
Warmest in January (65.1°F). Coldest in August (58.5°F). Comfortable for swimming from January to February.
About Boulders Beach
On the False Bay side of the Cape Peninsula, Boulders Beach sits within Table Mountain National Park, where roughly 3,000 endangered African penguins have colonised the coves between 540-million-year-old granite boulders since 1982. Just north, Foxy Beach offers boardwalk views over the main penguin colony with no swimming, while Seaforth Beach opens a sheltered sand strand suited to families. The Indian Ocean here warms to 18–22 °C from December through March, with Cape Town International airport 45 minutes by road.