July is the hottest month in Portslade with an average temperature of 18°C (63°F) and the coldest is January at 5°C (40°F) with the most daily sunshine hours at 8 in June. The wettest month is January with an average of 78.9mm of rain. The best month to swim in the sea is in August when the average sea temperature is 18°C (63°F).
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Sunrise 07:44
Sunset 15:57
Sunrise 07:44
Sunset 15:57