The weather in Niigata in August is very hot. The average temperatures are between 23°C and 28°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of August in Niigata. 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 Niigata in August 2025.
If you’re planning to visit Niigata in the near future, we highly recommend that you review the 14 day weather forecast for Niigata before you arrive.
Temperatures
28° / 23°
Rainy Days
12
Snowy Days
0
Dry Days
19
Rainfall
191
mm
Sun Hours
6.2
Hrs
