Karnataka weather in September
September is one of the least pleasant months in Karnataka: highs of 28°C (82°F) and about 152 mm (6.0 in) of rain on average. Nights average 19°C (66°F) and cloud cover 78% (NASA POWER, 2001–2025 averages). It is the wettest month of the year and the 4th coolest. Compared with August, it is about as warm and wetter; October brings highs of 27°C (81°F) and 141 mm (5.6 in) of rain.
Figures are long-term averages for Bengaluru, the largest city in Karnataka. See below for other places.
Is September a good time to visit Karnataka?
least pleasant month Weather score 59/100.
September is one of the least pleasant months for weather in Karnataka. For better conditions, consider Dec–Feb.
Does it rain a lot in Karnataka in September?
Yes, it is one of the rainy months: about 152 mm (6.0 in) falls in an average September. It is the wettest month of the year.
How warm is Karnataka in September?
Days average 28°C (82°F) and nights 19°C (66°F).
Karnataka weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 29°C (84°F) | 14°C (56°F) | 2 mm | 25% | best |
| February | 32°C (90°F) | 15°C (59°F) | 5 mm | 22% | best |
| March | 35°C (95°F) | 19°C (65°F) | 17 mm | 31% | fair |
| April | 35°C (96°F) | 21°C (70°F) | 57 mm | 48% | least pleasant |
| May | 33°C (91°F) | 21°C (70°F) | 110 mm | 64% | least pleasant |
| June | 29°C (84°F) | 20°C (67°F) | 76 mm | 82% | fair |
| July | 28°C (83°F) | 19°C (66°F) | 100 mm | 89% | least pleasant |
| August | 28°C (82°F) | 19°C (66°F) | 113 mm | 87% | least pleasant |
| September | 28°C (82°F) | 19°C (66°F) | 152 mm | 78% | least pleasant |
| October | 27°C (81°F) | 18°C (64°F) | 141 mm | 69% | least pleasant |
| November | 26°C (79°F) | 16°C (61°F) | 56 mm | 56% | fair |
| December | 27°C (80°F) | 14°C (57°F) | 15 mm | 42% | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Karnataka in September
Weather can differ a lot within Karnataka: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Bengaluru | 28°C (82°F) | 19°C (66°F) | 152 mm | least pleasant |
| Hubballi | 27°C (81°F) | 20°C (68°F) | 152 mm | fair |
| Mysuru | 28°C (83°F) | 19°C (66°F) | 138 mm | least pleasant |
| Kalaburagi | 30°C (85°F) | 21°C (70°F) | 173 mm | least pleasant |
| Mangaluru | 27°C (81°F) | 24°C (75°F) | 399 mm | least pleasant |
| Belagavi | 26°C (79°F) | 20°C (68°F) | 200 mm | fair |
| Davangere | 27°C (81°F) | 20°C (68°F) | 188 mm | fair |
| Ballari | 30°C (87°F) | 21°C (70°F) | 120 mm | least pleasant |
| Vijayapura | 31°C (87°F) | 21°C (70°F) | 123 mm | fair |
| Shivamogga | 26°C (80°F) | 20°C (67°F) | 228 mm | least pleasant |
| Tumkūr | 28°C (82°F) | 19°C (66°F) | 140 mm | least pleasant |
| Rāichūr | 31°C (87°F) | 22°C (71°F) | 151 mm | least pleasant |