July is the hottest month in Shannon with an average temperature of 17°C (62°F) and the coldest is February at 6°C (42°F) with the most daily sunshine hours at 6 in July. The wettest month is January with an average of 100mm of rain. The best month to swim in the sea is in August when the average sea temperature is 17°C (63°F).
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Sunrise 07:41
Sunset 16:57
Sunrise 07:41
Sunset 16:57