The temperatures in Patna during September are extremely high, between 27°C and hot as 34°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Patna. 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 Patna in September 2025.
If you’re planning to visit Patna in the near future, we highly recommend that you review the 14 day weather forecast for Patna before you arrive.
Temperatures
34° / 27°
Rainy Days
11
Snowy Days
0
Dry Days
19
Rainfall
273
mm
Sun Hours
10.5
Hrs
