Climate averages 1991–2020
Birendranagar weather
in September.
A warm, very wet month: the 6th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Birendranagar: daytime highs average 27.8°C and nights cool to about 21.5°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 244 mm of rain on roughly 23 days, which makes September a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 21 min on an average September day.
The nearest other city in this atlas is Nepalgunj (61 km away). In September its highs average 30.2°C, 2.4°C warmer than Birendranagar, with 154 mm of rain.
Among the 16 cities listed in Nepal, Birendranagar ranks 14th of 16 for the warmest September highs and 8th of 16 for the driest September (rainfall, lowest first). The mean September high of those 16 cities is 28.9°C; Birendranagar is 1.1°C cooler than that mean.
From September to October, average highs fall by 1.4°C to 26.4°C, and monthly rainfall falls from 244 mm to 37 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Birendranagar climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.4°C6.8°C | 6.8°C | 41 | 4.4 | 10.511 h |
| February | 21.2°C8.7°C | 8.7°C | 40 | 4.5 | 11.211 h |
| March | 26.1°C12.1°C | 12.1°C | 26 | 3.0 | 12.012 h |
| April | 31.2°C16.6°C | 16.6°C | 18 | 4.0 | 12.813 h |
| May | 32.8°C20.7°C | 20.7°C | 39 | 7.1 | 13.614 h |
| June | 31.2°C23.1°C | 23.1°C | 293 | 17.9 | 13.914 h |
| July | 28.3°C23.3°C | 23.3°C | 643 | 30.2 | 13.814 h |
| August | 28.1°C23.1°C | 23.1°C | 554 | 30.2 | 13.213 h |
| September, selected | 27.8°C21.5°C | 21.5°C | 244 | 22.6 | 12.412 h |
| October | 26.4°C17.0°C | 17.0°C | 37 | 4.9 | 11.512 h |
| November | 23.3°C12.4°C | 12.4°C | 6.7 | 1.1 | 10.811 h |
| December | 20.0°C8.7°C | 8.7°C | 16 | 1.3 | 10.410 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Nepalgunj in SeptemberNepal · 61 kmHigh 30.2°C · Low 23.8°C · 154 mm rain
- Dhangaḍhi̇̄ in SeptemberNepal · 101 kmHigh 29.6°C · Low 23.2°C · 189 mm rain
- Lakhīmpur in SeptemberIndia · 109 kmHigh 30.9°C · Low 24.3°C · 195 mm rain
- Bahraigh in SeptemberIndia · 114 kmHigh 31.0°C · Low 24.6°C · 177 mm rain
- Balrāmpur in SeptemberIndia · 141 kmHigh 30.8°C · Low 24.6°C · 181 mm rain
- Bhimdatta in SeptemberNepal · 146 kmHigh 29.6°C · Low 22.6°C · 198 mm rain
- Sītāpur in SeptemberIndia · 147 kmHigh 31.1°C · Low 24.4°C · 157 mm rain
- Gondā City in SeptemberIndia · 166 kmHigh 30.9°C · Low 24.6°C · 188 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Birendranagar) is explained once on the Birendranagar year overview and on the Sources, method and limits page.