Climate averages 1991–2020
Chas weather
in December.
A warm, very dry month: the 11th warmest and the 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 Chas: daytime highs average 24.3°C and nights cool to about 11.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 8.7 mm of rain on roughly 1 day, which makes December a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 43 min on an average December day.
The nearest other city in this atlas is Bokāro (4 km away). In December its highs average 24.3°C, about as warm as Chas, with 8.7 mm of rain.
Among the 692 cities listed in India, Chas ranks joint 426th of 692 for the warmest December highs and joint 376th of 692 for the driest December (rainfall, lowest first). The mean December high of those 692 cities is 25.6°C; Chas is 1.2°C cooler than that mean.
From December to January, average highs fall by 0.6°C to 23.8°C, and monthly rainfall rises from 8.7 mm to 14 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
Chas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 23.8°C10.4°C | 10.4°C | 14 | 2.3 | 10.911 h |
| February | 27.8°C13.7°C | 13.7°C | 17 | 2.5 | 11.311 h |
| March | 33.2°C18.2°C | 18.2°C | 18 | 2.9 | 12.012 h |
| April | 37.5°C22.8°C | 22.8°C | 20 | 4.8 | 12.713 h |
| May | 38.0°C25.6°C | 25.6°C | 62 | 10.2 | 13.313 h |
| June | 34.5°C26.4°C | 26.4°C | 213 | 20.3 | 13.614 h |
| July | 30.8°C25.2°C | 25.2°C | 290 | 27.4 | 13.413 h |
| August | 30.4°C24.8°C | 24.8°C | 267 | 27.0 | 13.013 h |
| September | 30.2°C24.0°C | 24.0°C | 210 | 21.4 | 12.312 h |
| October | 29.5°C20.7°C | 20.7°C | 64 | 7.6 | 11.612 h |
| November | 27.4°C15.7°C | 15.7°C | 9.5 | 1.2 | 11.011 h |
| December, selected | 24.3°C11.3°C | 11.3°C | 8.7 | 1.3 | 10.711 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
- Bokāro in DecemberIndia · 4 kmHigh 24.3°C · Low 11.1°C · 8.7 mm rain
- Phusro in DecemberIndia · 21 kmHigh 23.9°C · Low 11.1°C · 8.6 mm rain
- Jharia in DecemberIndia · 28 kmHigh 24.4°C · Low 11.9°C · 8.5 mm rain
- Dhanbad in DecemberIndia · 32 kmHigh 24.0°C · Low 11.8°C · 8.5 mm rain
- Puruliya in DecemberIndia · 39 kmHigh 24.3°C · Low 11.8°C · 9.4 mm rain
- Giridih in DecemberIndia · 63 kmHigh 23.1°C · Low 11.3°C · 7.8 mm rain
- Rāmgarh in DecemberIndia · 66 kmHigh 23.5°C · Low 11.1°C · 8.7 mm rain
- Kulti in DecemberIndia · 70 kmHigh 24.3°C · Low 12.6°C · 7.8 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 Chas) is explained once on the Chas year overview and on the Sources, method and limits page.
Bokāro lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.