July is the hottest month in Seaham with an average temperature of 17°C (63°F) and the coldest is February at -3°C (27°F) with the most daily sunshine hours at 12 in June. The wettest month is October with an average of 15mm of rain. The best month to swim in the sea is in April when the average sea temperature is 30°C (86°F).
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Sunrise 07:18
Sunset 16:19
Sunrise 07:18
Sunset 16:19