August is the hottest month in Harlingen with an average temperature of 29°C (83°F) and the coldest is January at 15°C (58°F) with the most daily sunshine hours at 11 in July. The wettest month is August with an average of 82.1mm of rain. The best month to swim in the sea is in August when the average sea temperature is 29°C (84°F).
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Sunrise 06:54
Sunset 17:39
Sunrise 06:54
Sunset 17:39