Climate averages 1991–2020
Cox’s Bāzār weather
by month.
See how the year changes. April has the highest average daily maximum; January has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: JanuaryFebruaryNovemberDecember
Long-term climate patterns, not a forecast for a particular trip.
Across the year Cox’s Bāzār averages a daytime high of 28.2°C and a nighttime low of 22.7°C, with about 2,616 mm of rain on roughly 165 days. April is the warmest month (average high 31.3°C) and January the coolest (24.3°C). July is the wettest month with 658 mm; January is the driest with 5.0 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): January, February, November and December. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Cox’s Bāzār
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
Cox’s Bāzār climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.3°C16.6°C | 16.6°C | 5.0 | 0.6 | 11.011 h |
| February | 26.7°C18.4°C | 18.4°C | 10 | 1.2 | 11.411 h |
| March | 29.8°C21.9°C | 21.9°C | 27 | 2.6 | 12.012 h |
| April | 31.3°C24.8°C | 24.8°C | 53 | 6.4 | 12.613 h |
| May | 30.8°C25.8°C | 25.8°C | 221 | 18.3 | 13.113 h |
| June | 29.0°C25.7°C | 25.7°C | 584 | 27.3 | 13.413 h |
| July | 28.1°C25.3°C | 25.3°C | 658 | 30.0 | 13.313 h |
| August | 28.3°C25.2°C | 25.2°C | 466 | 29.8 | 12.913 h |
| September | 28.8°C25.1°C | 25.1°C | 341 | 26.5 | 12.312 h |
| October | 29.0°C24.3°C | 24.3°C | 196 | 17.1 | 11.712 h |
| November | 27.6°C21.4°C | 21.4°C | 42 | 4.3 | 11.111 h |
| December | 25.2°C18.0°C | 18.0°C | 15 | 1.3 | 10.911 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
Nearby cities
- ChattogramBangladesh · 102 kmHigh 28.1°C · Low 22.7°C · 2,703 mm rain a year
- HāthazāriBangladesh · 120 kmHigh 28.6°C · Low 22.4°C · 2,619 mm rain a year
- RangamatiBangladesh · 135 kmHigh 29.7°C · Low 21.5°C · 1,856 mm rain a year
- Bibir HatBangladesh · 140 kmHigh 28.9°C · Low 21.9°C · 2,445 mm rain a year
- KarnaphuliBangladesh · 141 kmHigh 29.3°C · Low 21.7°C · 1,856 mm rain a year
- SittweMyanmar · 171 kmHigh 28.8°C · Low 23.5°C · 2,979 mm rain a year
- MaijdiBangladesh · 184 kmHigh 29.4°C · Low 21.4°C · 2,152 mm rain a year
- FeniBangladesh · 186 kmHigh 29.4°C · Low 21.3°C · 2,258 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC+6, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 21.40°, 92.00° (5 km from the city centre). Rain comes from the 0.25° cell at 21.50°, 92.00°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.