The weather in Sendai in August is hot. The average temperatures are between 20°C and 28°C.
You can expect rain for roughly half of the month of August in Sendai. 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 Sendai in August 2025.
If you’re planning to visit Sendai in the near future, we highly recommend that you review the 14 day weather forecast for Sendai before you arrive.
Temperatures
28° / 20°
Rainy Days
10
Snowy Days
0
Dry Days
21
Rainfall
222
mm
Sun Hours
9.3
Hrs
