Climate averages 1991–2020
Nepalgunj weather
in September.
A hot, 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 hot month in Nepalgunj: daytime highs average 30.2°C and nights cool to about 23.8°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 154 mm of rain on roughly 17 days, which makes September a 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 Bahraigh (53 km away). In September its highs average 31.0°C, 0.8°C warmer than Nepalgunj, with 177 mm of rain.
Among the 16 cities listed in Nepal, Nepalgunj ranks 4th of 16 for the warmest September highs and 1st of 16 for the driest September (rainfall, lowest first). The mean September high of those 16 cities is 28.9°C; Nepalgunj is 1.3°C warmer than that mean.
From September to October, average highs fall by 0.9°C to 29.3°C, and monthly rainfall falls from 154 mm to 29 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
Nepalgunj climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 20.2°C8.2°C | 8.2°C | 27 | 3.0 | 10.611 h |
| February | 23.8°C10.6°C | 10.6°C | 35 | 3.5 | 11.211 h |
| March | 29.6°C14.5°C | 14.5°C | 21 | 2.4 | 12.012 h |
| April | 35.3°C19.5°C | 19.5°C | 16 | 3.2 | 12.813 h |
| May | 36.7°C23.6°C | 23.6°C | 32 | 6.6 | 13.514 h |
| June | 34.8°C25.8°C | 25.8°C | 175 | 14.7 | 13.914 h |
| July | 30.7°C25.4°C | 25.4°C | 355 | 25.2 | 13.714 h |
| August | 30.4°C25.1°C | 25.1°C | 268 | 24.8 | 13.113 h |
| September, selected | 30.2°C23.8°C | 23.8°C | 154 | 17.2 | 12.312 h |
| October | 29.3°C19.0°C | 19.0°C | 29 | 2.9 | 11.512 h |
| November | 25.9°C14.0°C | 14.0°C | 3.8 | 0.5 | 10.811 h |
| December | 21.8°C9.9°C | 9.9°C | 12 | 0.9 | 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
- Bahraigh in SeptemberIndia · 53 kmHigh 31.0°C · Low 24.6°C · 177 mm rain
- Birendranagar in SeptemberNepal · 61 kmHigh 27.8°C · Low 21.5°C · 244 mm rain
- Lakhīmpur in SeptemberIndia · 83 kmHigh 30.9°C · Low 24.3°C · 195 mm rain
- Balrāmpur in SeptemberIndia · 89 kmHigh 30.8°C · Low 24.6°C · 181 mm rain
- Sītāpur in SeptemberIndia · 107 kmHigh 31.1°C · Low 24.4°C · 157 mm rain
- Gondā City in SeptemberIndia · 107 kmHigh 30.9°C · Low 24.6°C · 188 mm rain
- Dhangaḍhi̇̄ in SeptemberNepal · 124 kmHigh 29.6°C · Low 23.2°C · 189 mm rain
- Nawābganj, India in SeptemberIndia · 131 kmHigh 31.1°C · Low 24.6°C · 166 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 Nepalgunj) is explained once on the Nepalgunj year overview and on the Sources, method and limits page.