Climate averages 1991–2020
Karnaphuli weather
in August.
A hot, very wet month: the 6th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Karnaphuli: daytime highs average 29.9°C and nights cool to about 25.0°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 275 mm of rain on roughly 29 days, which makes August a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 55 min on an average August day.
The nearest other city in this atlas is Rangamati (7 km away). In August its highs average 30.1°C, about as warm as Karnaphuli, with 275 mm of rain.
Among the 63 cities listed in Bangladesh, Karnaphuli ranks 55th of 63 for the warmest August highs and joint 18th of 63 for the driest August (rainfall, lowest first). The mean August high of those 63 cities is 30.7°C; Karnaphuli is 0.8°C cooler than that mean.
From August to September, average highs rise by 0.2°C to 30.1°C, and monthly rainfall falls from 275 mm to 243 mm.
The annual picture
August 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, selected | 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 | 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
August in nearby cities
- Rangamati in AugustBangladesh · 7 kmHigh 30.1°C · Low 24.7°C · 275 mm rain
- Bibir Hat in AugustBangladesh · 46 kmHigh 29.3°C · Low 25.2°C · 396 mm rain
- Hāthazāri in AugustBangladesh · 48 kmHigh 29.0°C · Low 25.4°C · 440 mm rain
- Chattogram in AugustBangladesh · 57 kmHigh 28.7°C · Low 25.6°C · 454 mm rain
- Feni in AugustBangladesh · 93 kmHigh 29.8°C · Low 25.2°C · 354 mm rain
- Maijdi in AugustBangladesh · 118 kmHigh 29.8°C · Low 25.4°C · 362 mm rain
- Aizawl in AugustIndia · 126 kmHigh 24.7°C · Low 18.7°C · 303 mm rain
- Lākshām in AugustBangladesh · 129 kmHigh 30.1°C · Low 25.3°C · 287 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.