Climate averages 1991–2020
Karnaphuli 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 Karnaphuli: daytime highs average 25.5°C and nights cool to about 16.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 9.7 mm of rain on roughly 1 day, which makes December a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 46 min on an average December day.
The nearest other city in this atlas is Rangamati (7 km away). In December its highs average 25.8°C, about as warm as Karnaphuli, with 9.7 mm of rain.
Among the 63 cities listed in Bangladesh, Karnaphuli ranks 9th of 63 for the warmest December highs and joint 33rd of 63 for the driest December (rainfall, lowest first). The mean December high of those 63 cities is 25.1°C; Karnaphuli is 0.4°C warmer than that mean.
From December to January, average highs fall by 0.6°C to 24.9°C, and monthly rainfall falls from 9.7 mm to 6.8 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
Karnaphuli climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.9°C14.6°C | 14.6°C | 6.8 | 1.0 | 10.911 h |
| February | 27.7°C16.5°C | 16.5°C | 16 | 2.1 | 11.411 h |
| March | 31.4°C20.6°C | 20.6°C | 50 | 4.1 | 12.012 h |
| April | 32.9°C23.8°C | 23.8°C | 85 | 9.1 | 12.713 h |
| May | 32.1°C25.1°C | 25.1°C | 241 | 19.7 | 13.213 h |
| June | 30.3°C25.2°C | 25.2°C | 377 | 26.7 | 13.513 h |
| July | 29.5°C24.9°C | 24.9°C | 355 | 29.1 | 13.413 h |
| August | 29.9°C25.0°C | 25.0°C | 275 | 28.9 | 12.913 h |
| September | 30.1°C24.7°C | 24.7°C | 243 | 26.0 | 12.312 h |
| October | 29.8°C23.7°C | 23.7°C | 160 | 17.4 | 11.612 h |
| November | 28.0°C20.2°C | 20.2°C | 38 | 4.1 | 11.111 h |
| December, selected | 25.5°C16.3°C | 16.3°C | 9.7 | 1.2 | 10.811 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
- Rangamati in DecemberBangladesh · 7 kmHigh 25.8°C · Low 16.2°C · 9.7 mm rain
- Bibir Hat in DecemberBangladesh · 46 kmHigh 25.4°C · Low 16.1°C · 8.0 mm rain
- Hāthazāri in DecemberBangladesh · 48 kmHigh 25.2°C · Low 16.9°C · 9.6 mm rain
- Chattogram in DecemberBangladesh · 57 kmHigh 24.7°C · Low 17.4°C · 12 mm rain
- Feni in DecemberBangladesh · 93 kmHigh 25.9°C · Low 14.3°C · 7.3 mm rain
- Maijdi in DecemberBangladesh · 118 kmHigh 25.9°C · Low 14.2°C · 6.6 mm rain
- Aizawl in DecemberIndia · 126 kmHigh 19.6°C · Low 7.1°C · 14 mm rain
- Lākshām in DecemberBangladesh · 129 kmHigh 25.7°C · Low 14.2°C · 7.2 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 Karnaphuli) is explained once on the Karnaphuli year overview and on the Sources, method and limits page.
Rangamati lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.