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The climate in Bangladesh

Average daytime and nighttime temperatures


All climate diagrams on this page result from the collected data of 18 weather stations.
Weather stations at an altitude above 1300m have not been included.
All data correspond to the average monthly values of the last 20 years.


Back to overview: Bangladesh

Climate zone: The northern parts of Bangladesh are in the subtropics, the southern regions in the tropics.

The climate in Bangladesh is very warm, with an annual average of 30 degrees, but has few truly tropical and sultry months. It is yearlong warm or hot. The warmest and rainiest part of the country is Khulna. The coldest is Sylhet. Dued to the lesser rain the best time for traveling is from November to March. Most precipitation decrease from May to September.
Duration of daylight and sunshine in Bangladesh
Compare climate with other regions or countries
Hours of sunshine per daySunshine hours per day in Bangladesh
Rainy days per monthRainy days per month in Bangladesh
Precipitation in mm/dayPrecipitation in Bangladesh
Relative humidity in %Relative humidity in Bangladesh
Absolute humidity in g/m³Absolute humidity in Bangladesh

Regions in Bangladesh

All figures per year. For detailed climate data click on the name of the region.

RegionTemperature
max Ø day
Temperature
min Ø night
Sunshine
hours
Rainy
days
PrecipitationHumidity
Barisal31.2 °C22.0 °C2,081 h128 1,964 l
Chittagong31.0 °C22.2 °C2,154 h136 2,544 l73.0 %
Dhaka31.2 °C22.1 °C2,044 h131 1,935 l73.0 %
Khulna31.4 °C21.6 °C2,008 h124 1,672 l76.0 %
Rajshahi29.9 °C21.1 °C2,044 h116 1,843 l74.0 %
Rangpur Division29.0 °C21.0 °C1,971 h120 2,154 l
Sylhet25.2 °C16.4 °C1,898 h176 6,906 l81.0 %

Temperature records of the last 75 years

The hottest temperature measured from 1947 to December 2022 was reported by the Chittagong Airp weather station. In August 2020 the record temperature of 39.5 °C was reported here. The hottest summer from July to September, based on all 16 weather stations in Bangladesh below 1300 metres altitude, was recorded in 1978 with an average temperature of 29.2 °C. This average temperature will normally be measured every 4 to 6 hours, thus also including the nights. Normally, this value is 28.4 degrees Celsius.

The coldest day in these 75 years was reported by the weather station Ishwardi. Here the temperature dropped to 14.2 °C in March 2020. Ishwardi lies at an altitude of 14 meters above sea level. The coldest winter (January to March) was in 1989 with an average temperature of 18.2 °C. In Bangladesh, it is usual to have about 3.3 degrees more at 21.5 °C for this three-month period.

The most precipitation fell in July 1954. With 61.3 mm per day, the Saidpur weather station recorded the highest monthly average of the last 75 years. Incidentally, the region with the most rainfall for the whole year is around Sylhet. The driest region is near Ishwardi.




Data basis and methodology

The data of the individual measuring stations are based on the archives of the German Weather Service, individual values averaged and supplemented by own elements. In order to determine a representative national average, average values were first calculated for each part of the country, which were then summarized at the national level. Thus, if a disproportionate number of weather stations are located in a small area, their number does not affect the national average. There are 16 stations in Bangladesh itself. In 2 cases, neighboring but nearby weather stations were also used to obtain more accurate values.
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