Assam weather in September
September is one of the least pleasant months in Assam: highs of 30°C (87°F) and about 228 mm (9.0 in) of rain on average. Nights average 23°C (73°F) and cloud cover 80% (NASA POWER, 2001–2025 averages). It is the 6th wettest month of the year and the 6th warmest. Compared with August, it is cooler and drier; October brings highs of 29°C (83°F) and 135 mm (5.3 in) of rain.
Figures are long-term averages for Guwahati, the largest city in Assam. See below for other places.
Is September a good time to visit Assam?
least pleasant month Weather score 46/100.
September is one of the least pleasant months for weather in Assam. For better conditions, consider Nov–Mar.
Does it rain a lot in Assam in September?
Yes, it is one of the rainy months: about 228 mm (9.0 in) falls in an average September. It is the 6th wettest month of the year.
How warm is Assam in September?
Days average 30°C (87°F) and nights 23°C (73°F).
Assam weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 21°C (70°F) | 8°C (47°F) | 7 mm | 34% | best |
| February | 24°C (76°F) | 10°C (51°F) | 21 mm | 42% | best |
| March | 29°C (84°F) | 14°C (58°F) | 59 mm | 56% | best |
| April | 31°C (88°F) | 19°C (66°F) | 230 mm | 77% | least pleasant |
| May | 32°C (90°F) | 22°C (71°F) | 286 mm | 83% | least pleasant |
| June | 32°C (90°F) | 24°C (74°F) | 374 mm | 89% | least pleasant |
| July | 32°C (89°F) | 24°C (75°F) | 364 mm | 92% | least pleasant |
| August | 32°C (89°F) | 24°C (75°F) | 286 mm | 89% | least pleasant |
| September | 30°C (87°F) | 23°C (73°F) | 228 mm | 80% | least pleasant |
| October | 29°C (83°F) | 19°C (67°F) | 135 mm | 51% | fair |
| November | 25°C (77°F) | 14°C (58°F) | 14 mm | 31% | best |
| December | 22°C (72°F) | 10°C (51°F) | 8 mm | 29% | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Assam in September
Weather can differ a lot within Assam: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Guwahati | 30°C (87°F) | 23°C (73°F) | 228 mm | least pleasant |
| Silchar | 30°C (86°F) | 24°C (74°F) | 338 mm | least pleasant |
| Dibrugarh | 32°C (90°F) | 24°C (76°F) | 320 mm | least pleasant |
| Jorhat | 31°C (87°F) | 25°C (76°F) | 280 mm | least pleasant |
| Nagaon | 31°C (87°F) | 25°C (76°F) | 195 mm | fair |
| Tinsukia | 33°C (91°F) | 24°C (74°F) | 294 mm | least pleasant |
| Tezpur | 31°C (87°F) | 25°C (76°F) | 195 mm | fair |
| Bongaigaon | 31°C (87°F) | 25°C (77°F) | 262 mm | least pleasant |
| Dhubri | 31°C (87°F) | 25°C (77°F) | 323 mm | least pleasant |
| Sibsāgar | 31°C (87°F) | 25°C (76°F) | 280 mm | least pleasant |
| Diphu | 31°C (87°F) | 24°C (75°F) | 175 mm | fair |
| North Lakhimpur | 31°C (87°F) | 25°C (76°F) | 280 mm | least pleasant |