July is the hottest month in Cardiff airport with an average temperature of 16°C (61°F) and the coldest is February at 4°C (39°F) with the most daily sunshine hours at 7 in July. The wettest month is January with an average of 90mm of rain. The best month to swim in the sea is in August when the average sea temperature is 16°C (61°F).
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Sunrise 08:00
Sunset 16:07
Sunrise 08:00
Sunset 16:07