Climate averages 1991–2020
Chattogram weather
in October.
A hot, very wet month: the joint 5th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a hot month in Chattogram: daytime highs average 29.0°C and nights cool to about 24.5°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 203 mm of rain on roughly 17 days, which makes October a very wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 39 min on an average October day.
The nearest other city in this atlas is Hāthazāri (19 km away). In October its highs average 29.3°C, about as warm as Chattogram, with 202 mm of rain.
Among the 63 cities listed in Bangladesh, Chattogram ranks joint 61st of 63 for the warmest October highs and 61st of 63 for the driest October (rainfall, lowest first). The mean October high of those 63 cities is 29.9°C; Chattogram is 0.8°C cooler than that mean.
From October to November, average highs fall by 1.8°C to 27.3°C, and monthly rainfall falls from 203 mm to 48 mm.
The annual picture
October 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
Chattogram climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 23.9°C15.8°C | 15.8°C | 6.2 | 0.8 | 10.911 h |
| February | 26.4°C18.0°C | 18.0°C | 14 | 1.8 | 11.411 h |
| March | 29.4°C22.1°C | 22.1°C | 46 | 4.4 | 12.012 h |
| April | 30.5°C25.0°C | 25.0°C | 98 | 9.4 | 12.713 h |
| May | 30.3°C26.0°C | 26.0°C | 291 | 20.5 | 13.213 h |
| June | 29.2°C26.0°C | 26.0°C | 583 | 26.8 | 13.513 h |
| July | 28.5°C25.6°C | 25.6°C | 606 | 29.3 | 13.413 h |
| August | 28.7°C25.6°C | 25.6°C | 454 | 28.7 | 12.913 h |
| September | 29.0°C25.4°C | 25.4°C | 340 | 25.6 | 12.312 h |
| October, selected | 29.0°C24.5°C | 24.5°C | 203 | 17.3 | 11.712 h |
| November | 27.3°C21.1°C | 21.1°C | 48 | 3.9 | 11.111 h |
| December | 24.7°C17.4°C | 17.4°C | 12 | 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
October in nearby cities
- Hāthazāri in OctoberBangladesh · 19 kmHigh 29.3°C · Low 24.2°C · 202 mm rain
- Bibir Hat in OctoberBangladesh · 39 kmHigh 29.5°C · Low 23.8°C · 192 mm rain
- Rangamati in OctoberBangladesh · 50 kmHigh 30.0°C · Low 23.6°C · 160 mm rain
- Karnaphuli in OctoberBangladesh · 57 kmHigh 29.8°C · Low 23.7°C · 160 mm rain
- Feni in OctoberBangladesh · 87 kmHigh 29.8°C · Low 23.0°C · 179 mm rain
- Maijdi in OctoberBangladesh · 95 kmHigh 29.9°C · Low 23.0°C · 167 mm rain
- Cox’s Bāzār in OctoberBangladesh · 102 kmHigh 29.0°C · Low 24.3°C · 196 mm rain
- Lākshām in OctoberBangladesh · 124 kmHigh 29.9°C · Low 22.9°C · 158 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 Chattogram) is explained once on the Chattogram year overview and on the Sources, method and limits page.