September is the hottest month in Hierro with an average temperature of 24°C (74°F) and the coldest is January at 18°C (64°F) with the most daily sunshine hours at 10 in August. The wettest month is March with an average of 30mm of rain. The best month to swim in the sea is in September when the average sea temperature is 24°C (75°F).
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Sunrise 07:40
Sunset 18:16
Sunrise 07:40
Sunset 18:16