July is the hottest month in Altnau with an average temperature of 19°C (66°F) and the coldest is January at 1°C (32°F) with the most daily sunshine hours at 11 in July. The wettest month is June with an average of 105mm of rain..
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Sunrise 07:41
Sunset 16:38
Sunrise 07:41
Sunset 16:38