The weather in Skiathos in September is hot. The average temperatures are between 22°C and 24°C.
You can expect about 3 to 8 days of rain in Skiathos during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Skiathos in September 2025.
If you’re planning to visit Skiathos in the near future, we highly recommend that you review the 14 day weather forecast for Skiathos before you arrive.
Temperatures
24° / 22°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
106
mm
Sun Hours
11.1
Hrs