The climate of Chittagong (or Chattogram), the second largest city in Bangladesh, is
, influenced by the monsoon, with a dry season from November to March and a rainy season from May to October.
The city is located in southeastern Bangladesh, at 22 degrees north latitude, near the estuary of the Karnaphuli River, on the coast of the Bay of Bengal. Since the coast is exposed to the southwest, it directly receives the humid currents brought by the monsoon, in fact, the rains are very abundant, especially from June to August.
, from December to February, the night temperature can drop to 12/13 °C (53/55 °F) or even below.
. From the end of March to the beginning of June, the temperature can reach or exceed 36/37 °C (97/99 °F). In late April 2014, it reached 39.6 °C (103.3 °F).
During this period, showers or thunderstorms in the afternoon occur, which become gradually more frequent and intense, to the point that May is a very rainy month.
runs from June to early October. In this period, the rains are very abundant, and the sky is often cloudy.
. Typically, cyclones occur from April to December, with two intensity peaks before and after the monsoon (from late April to early June and in October-November). Chittagong was destroyed by the Bangladesh cyclone of late April 1991, one of the most catastrophic in history, but was also hit hard by Cyclone Bhola in early November 1970, which was just as intense but reached the mainland a little further to the west in East Pakistan (the name Bangladesh had at that time).
. Typically, in November and in the first half of December, the weather is good, and it's hot but not too much, but we cannot exclude that some cloud banks can still form, or that a cyclone, maybe outside of the normal season, can arrive. In March and April, it's hot, and thunderstorms, sometimes intense, can develop.
. Here are the average temperatures.
January, the coolest month of the year, is generally a warm month. The average temperature is of
20 °C, with a minimum of
14.2 °C and a maximum of
25.9 °C.
On the coldest nights of the month, the temperature usually drops to around
12.5 °C.
On the warmest days of the month, the temperature usually reaches around
29.5 °C.
Precipitation amounts to only
9 mm, and all occurs in one day.
The day lasts on average 10 hours and 55 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 78% of the time.
The average humidity is 67%.
The average wind speed is of
6.8 kph.
The average sea temperature is of
22.6 °C. Therefore, the sea can be considered barely acceptable for swimming.
February is generally a warm to hot month. The average temperature is of
22.6 °C, with a minimum of
16.7 °C and a maximum of
28.6 °C.
On the coldest nights of the month, the temperature usually drops to around
14 °C.
On the warmest days of the month, the temperature usually reaches around
31.5 °C.
Precipitation amounts to
21 mm, and all occurs in one day.
The day lasts on average 11 hours and 25 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 76% of the time.
The average humidity is 63%.
The average wind speed is of
8.2 kph.
The average sea temperature is of
23.2 °C. Therefore, the sea can be considered barely acceptable for swimming.
March is generally a warm to hot month. The average temperature is of
26 °C, with a minimum of
21 °C and a maximum of
31.1 °C.
On the coldest nights of the month, the temperature usually drops to around
18 °C.
On the warmest days of the month, the temperature usually reaches around
34.5 °C.
Precipitation amounts to
49 mm, distributed over 3 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 74% of the time.
The average humidity is 67%.
The average wind speed is of
9.7 kph.
The average sea temperature is of
26 °C. Therefore, the sea is warm enough for swimming.
April is generally a very hot, muggy month. The average temperature is of
28.2 °C, with a minimum of
24.1 °C and a maximum of
32.2 °C.
On the coldest nights of the month, the temperature usually drops to around
20.5 °C.
On the warmest days of the month, the temperature usually reaches around
35 °C.
Precipitation amounts to
103 mm, distributed over 6 days.
The day lasts on average 12 hours and 40 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
11.9 kph.
The average sea temperature is of
28.3 °C. Therefore, the sea is pleasantly warm and allows long swims.
May, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of
28.8 °C, with a minimum of
25.2 °C and a maximum of
32.5 °C.
On the coldest nights of the month, the temperature usually drops to around
22 °C.
On the warmest days of the month, the temperature usually reaches around
35 °C.
Precipitation amounts to
333 mm, distributed over 14 days.
The day lasts on average 13 hours and 10 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
11.8 kph.
The average sea temperature is of
29.6 °C. Therefore, the sea is pleasantly warm and allows long swims.
June is generally a very hot, muggy month. The average temperature is of
28.7 °C, with a minimum of
25.6 °C and a maximum of
31.8 °C.
On the coldest nights of the month, the temperature usually drops to around
23.5 °C.
On the warmest days of the month, the temperature usually reaches around
34.5 °C.
Precipitation amounts to
627 mm, distributed over 19 days.
The day lasts on average 13 hours and 30 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 4 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of
13 kph.
The average sea temperature is of
29.8 °C. Therefore, the sea is pleasantly warm and allows long swims.
July is generally a very hot, muggy month. The average temperature is of
28.3 °C, with a minimum of
25.5 °C and a maximum of
31.1 °C.
On the coldest nights of the month, the temperature usually drops to around
24 °C.
On the warmest days of the month, the temperature usually reaches around
34 °C.
Precipitation amounts to
718 mm, distributed over 21 days.
The day lasts on average 13 hours and 20 minutes.
There are on average 3.5 hours of sunshine per day. So, the sun shines 25% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is of
14.2 kph.
The average sea temperature is of
29.2 °C. Therefore, the sea is pleasantly warm and allows long swims.
August is generally a very hot, muggy month. The average temperature is of
28.5 °C, with a minimum of
25.6 °C and a maximum of
31.4 °C.
On the coldest nights of the month, the temperature usually drops to around
23 °C.
On the warmest days of the month, the temperature usually reaches around
34.5 °C.
Precipitation amounts to
533 mm, distributed over 21 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 31% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is of
12.6 kph.
The average sea temperature is of
28.9 °C. Therefore, the sea is pleasantly warm and allows long swims.
September is generally a very hot, muggy month. The average temperature is of
28.7 °C, with a minimum of
25.5 °C and a maximum of
31.9 °C.
On the coldest nights of the month, the temperature usually drops to around
23.5 °C.
On the warmest days of the month, the temperature usually reaches around
34.5 °C.
Precipitation amounts to
282 mm, distributed over 17 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of
9.4 kph.
The average sea temperature is of
29 °C. Therefore, the sea is pleasantly warm and allows long swims.
October is generally a very hot, muggy month. The average temperature is of
28 °C, with a minimum of
24.4 °C and a maximum of
31.7 °C.
On the coldest nights of the month, the temperature usually drops to around
22.5 °C.
On the warmest days of the month, the temperature usually reaches around
34.5 °C.
Precipitation amounts to
231 mm, distributed over 10 days.
The day lasts on average 11 hours and 35 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 61% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of
6.1 kph.
The average sea temperature is of
29.1 °C. Therefore, the sea is pleasantly warm and allows long swims.
November is generally a warm to hot, muggy month. The average temperature is of
25.2 °C, with a minimum of
20.5 °C and a maximum of
30 °C.
On the coldest nights of the month, the temperature usually drops to around
17.5 °C.
On the warmest days of the month, the temperature usually reaches around
33 °C.
Precipitation amounts to
47 mm, distributed over 3 days.
The day lasts on average 11 hours and 5 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
5.6 kph.
The average sea temperature is of
27.2 °C. Therefore, the sea is pleasantly warm and allows long swims.
December is generally a warm month. The average temperature is of
21.6 °C, with a minimum of
16 °C and a maximum of
27.1 °C.
On the coldest nights of the month, the temperature usually drops to around
13.5 °C.
On the warmest days of the month, the temperature usually reaches around
30 °C.
Precipitation amounts to
11 mm, and all occurs in one day.
The day lasts on average 10 hours and 50 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 8 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 70%.
The average wind speed is of
5.7 kph.
The average sea temperature is of
24.5 °C. Therefore, the sea is warm enough for swimming.