Climate averages 1991–2020
Birgañj weather
in May.
A very hot, moderately wet month: the 2nd warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a very hot month in Birgañj: daytime highs average 35.6°C and nights cool to about 24.9°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 76 mm of rain on roughly 11 days, which makes May a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 28 min on an average May day.
The nearest other city in this atlas is Mothīhāri (41 km away). In May its highs average 36.6°C, 1.0°C warmer than Birgañj, with 84 mm of rain.
Among the 16 cities listed in Nepal, Birgañj ranks 4th of 16 for the warmest May highs and 5th of 16 for the driest May (rainfall, lowest first). The mean May high of those 16 cities is 32.7°C; Birgañj is 2.9°C warmer than that mean.
From May to June, average highs fall by 1.8°C to 33.8°C, and monthly rainfall rises from 76 mm to 226 mm.
The annual picture
May 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
Birgañj climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.7°C10.2°C | 10.2°C | 13 | 1.8 | 10.611 h |
| February | 25.3°C12.6°C | 12.6°C | 17 | 2.1 | 11.211 h |
| March | 31.3°C17.0°C | 17.0°C | 12 | 2.1 | 12.012 h |
| April | 35.7°C21.9°C | 21.9°C | 26 | 5.2 | 12.813 h |
| May, selected | 35.6°C24.9°C | 24.9°C | 76 | 11.4 | 13.513 h |
| June | 33.8°C26.1°C | 26.1°C | 226 | 20.5 | 13.814 h |
| July | 31.1°C25.7°C | 25.7°C | 441 | 28.6 | 13.714 h |
| August | 31.0°C25.6°C | 25.6°C | 347 | 28.1 | 13.113 h |
| September | 30.5°C24.5°C | 24.5°C | 225 | 22.7 | 12.312 h |
| October | 29.8°C20.7°C | 20.7°C | 45 | 5.1 | 11.512 h |
| November | 27.4°C15.7°C | 15.7°C | 4.7 | 0.5 | 10.811 h |
| December | 23.5°C11.7°C | 11.7°C | 7.1 | 0.7 | 10.510 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
May in nearby cities
- Mothīhāri in MayIndia · 41 kmHigh 36.6°C · Low 25.7°C · 84 mm rain
- Bettiah in MayIndia · 44 kmHigh 36.5°C · Low 25.5°C · 53 mm rain
- Hetauda in MayNepal · 48 kmHigh 31.8°C · Low 22.0°C · 154 mm rain
- Bagaha (Bihar, 27.10°N 84.09°E), India in MayIndia · 79 kmHigh 36.0°C · Low 25.1°C · 56 mm rain
- Bharatpur, Nepal in MayNepal · 86 kmHigh 32.6°C · Low 22.6°C · 167 mm rain
- Madhyapur Thimi in MayNepal · 89 kmHigh 25.3°C · Low 16.4°C · 186 mm rain
- Siwān in MayIndia · 103 kmHigh 37.6°C · Low 26.1°C · 29 mm rain
- Kushinagar in MayIndia · 103 kmHigh 37.4°C · Low 25.8°C · 42 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 Birgañj) is explained once on the Birgañj year overview and on the Sources, method and limits page.