August is the hottest month in Cascais with an average temperature of 24°C (74°F) and the coldest is January at 12°C (53°F) with the most daily sunshine hours at 11 in August. The wettest month is November with an average of 113.9mm of rain. The best month to swim in the sea is in August when the average sea temperature is 21°C (70°F).
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Sunrise 07:52
Sunset 17:20
Sunrise 07:52
Sunset 17:20