The weather in Karnataka in September is hot. The average temperatures are between 20°C and 28°C.
There’s going to be many days of rain during the month of September in Karnataka.
Karnataka should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Karnataka in September 2025.
If you’re planning to visit Karnataka in the near future, we highly recommend that you review the 14 day weather forecast for Karnataka before you arrive.