The temperatures in Kathmandu in September are comfortable with low of 15°C and and high up to 25°C.
With more than 22 rainy days, Kathmandu is an incredibly wet during September. Be sure to pack your umbrella and bring along your rubber boots to stay dry. It’s going to be raining cats and dogs this month!
Our weather forecast can give you a great sense of what weather to expect in Kathmandu in September 2025.
If you’re planning to visit Kathmandu in the near future, we highly recommend that you review the 14 day weather forecast for Kathmandu before you arrive.
Temperatures
25° / 15°
Rainy Days
23
Snowy Days
0
Dry Days
7
Rainfall
568
mm
Sun Hours
10.7
Hrs
