Click on a day for an hourly weather forecast
The weather in Biratnagar in September is very hot. The average temperatures are between 26°C and 32°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of September in Biratnagar.
Biratnagar 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 Biratnagar in September 2025.
If you’re planning to visit Biratnagar in the near future, we highly recommend that you review the 14 day weather forecast for Biratnagar before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 24° / 13° | 0 | 31 | 0 | 1 mm | Perfect | Biratnagar in January |
| February | 27° / 15° | 1 | 27 | 0 | 5 mm | Perfect | Biratnagar in February |
| March | 33° / 20° | 2 | 29 | 0 | 5 mm | Good | Biratnagar in March |
| April | 36° / 24° | 3 | 27 | 0 | 11 mm | Ok | Biratnagar in April |
| May | 34° / 25° | 9 | 22 | 0 | 61 mm | Bad | Biratnagar in May |
| June | 33° / 27° | 14 | 16 | 0 | 122 mm | Ok | Biratnagar in June |
| July | 32° / 27° | 20 | 11 | 0 | 194 mm | Ok | Biratnagar in July |
| August | 32° / 27° | 19 | 12 | 0 | 152 mm | Ok | Biratnagar in August |
| September | 32° / 26° | 15 | 15 | 0 | 103 mm | Ok | Biratnagar in September |
| October | 31° / 22° | 3 | 28 | 0 | 29 mm | Good | Biratnagar in October |
| November | 28° / 18° | 0 | 30 | 0 | 1 mm | Perfect | Biratnagar in November |
| December | 25° / 15° | 0 | 31 | 0 | 1 mm | Perfect | Biratnagar in December |