The weather in Sasebo in September is hot. The average temperatures are between 22°C and 27°C.
You can expect rain for roughly half of the month of September in Sasebo. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Sasebo in September 2025.
If you’re planning to visit Sasebo in the near future, we highly recommend that you review the 14 day weather forecast for Sasebo before you arrive.
Temperatures
27° / 22°
Rainy Days
8
Snowy Days
0
Dry Days
22
Rainfall
198
mm
Sun Hours
10.1
Hrs
