Climate averages 1991–2020
Biratnagar weather
in December.
A warm, very dry month: the 11th warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Biratnagar: daytime highs average 24.0°C and nights cool to about 12.4°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 3.9 mm of rain on fewer than one day, which makes December a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 31 min on an average December day.
The nearest other city in this atlas is Inaruwa (21 km away). In December its highs average 23.2°C, 0.8°C cooler than Biratnagar, with 3.9 mm of rain.
Among the 16 cities listed in Nepal, Biratnagar ranks 1st of 16 for the warmest December highs and joint 2nd of 16 for the driest December (rainfall, lowest first). The mean December high of those 16 cities is 21.6°C; Biratnagar is 2.4°C warmer than that mean.
From December to January, average highs fall by 1.7°C to 22.3°C, and monthly rainfall rises from 3.9 mm to 8.9 mm.
The annual picture
December 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
Biratnagar climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 22.3°C11.1°C | 11.1°C | 8.9 | 1.4 | 10.711 h |
| February | 25.3°C13.5°C | 13.5°C | 12 | 1.7 | 11.211 h |
| March | 31.0°C17.9°C | 17.9°C | 12 | 2.4 | 12.012 h |
| April | 33.9°C22.1°C | 22.1°C | 34 | 6.2 | 12.813 h |
| May | 32.8°C24.2°C | 24.2°C | 118 | 14.9 | 13.413 h |
| June | 31.2°C25.2°C | 25.2°C | 306 | 24.5 | 13.814 h |
| July | 30.4°C25.4°C | 25.4°C | 412 | 29.5 | 13.614 h |
| August | 30.6°C25.4°C | 25.4°C | 346 | 28.5 | 13.113 h |
| September | 30.0°C24.4°C | 24.4°C | 277 | 23.0 | 12.312 h |
| October | 29.4°C21.0°C | 21.0°C | 77 | 6.1 | 11.612 h |
| November | 27.3°C16.1°C | 16.1°C | 3.6 | 0.6 | 10.911 h |
| December, selected | 24.0°C12.4°C | 12.4°C | 3.9 | 0.5 | 10.511 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
December in nearby cities
- Inaruwa in DecemberNepal · 21 kmHigh 23.2°C · Low 12.1°C · 3.9 mm rain
- Dharān in DecemberNepal · 40 kmHigh 21.4°C · Low 11.0°C · 4.6 mm rain
- Arāria in DecemberIndia · 42 kmHigh 24.5°C · Low 12.6°C · 5.6 mm rain
- Triyuga in DecemberNepal · 68 kmHigh 22.9°C · Low 12.0°C · 3.6 mm rain
- Purnia in DecemberIndia · 78 kmHigh 24.5°C · Low 12.9°C · 5.9 mm rain
- Kishanganj in DecemberIndia · 79 kmHigh 24.7°C · Low 13.3°C · 5.9 mm rain
- Lahān in DecemberNepal · 84 kmHigh 23.1°C · Low 11.6°C · 4.0 mm rain
- Saharsa in DecemberIndia · 93 kmHigh 24.2°C · Low 12.7°C · 6.8 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 Biratnagar) is explained once on the Biratnagar year overview and on the Sources, method and limits page.
Inaruwa lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.