| Average Sea Temperature shows average monthly sea-surface temperatures for each month rounded to the nearest degree. |
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Less than 4°C (39°F) |
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16°C (61°F) to 20°C (68°F) |
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24°C (75°F) to 26°C (79°F) |
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4°C (39°F) to 8°C (46°F) |
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20°C (68°F) to 22°C (72°F) |
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26°C (79°F) to 28°C (82°F) |
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8°C (46°F) to 12°C (54°F) |
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22°C (72°F) to 24°C (75°F) |
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28°C (82°F) or more |
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12°C (54°F) to 16°C (61°F) |
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| Because the sun also emits infra-red radiation, swimming in the sea in direct sun can help to improve the sensation of the cooler water temperatures. |
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| For the Holiday Planner, Sea Temperatures are classified in the following ranges: |
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- Cool 18°C or more (65°F or more)
- Comfortable 24°C or more (75°F or more)
- Warm 28°C or more (82°F or more)
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