July is the hottest month in Skiathos with an average temperature of 23°C (73°F) and the coldest month is January a 6°C (42°F). The month with the warmest sea is August when the average sea temperature is 25°C (45°F).
Annual Average Temperatures in Skiathos
The following chart shows the maximum and minimum average temperatures. It is visible the average temperature of the sea surface too.
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
30°C
27°C
24°C
21°C
18°C
15°C
12°C
9°C
6°C
3°C
Maximum C°
Minimum C°
Sea C°
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Abbiamo fatto un giro per le Sporadi, in particolare Skopelos e Alonissos veleggiando con vento un po' teso (18 nodi con raffiche da 25) e visitando calette da sogno.