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Climate in Bangladesh


Average weather, temperature, rainfall, sunshine

Flag - Bangladesh

Map - Bangladesh

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The climate of Bangladesh is subtropical in the center-north and tropical in the south. There is a pleasantly warm, sunny winter, slightly cooler in the north and warmer in the south, then there is a short, hot spring between March and May, and a long rainy season from June to October due to the summer monsoon.
The country is flat and occupied by the huge Ganges-Brahmaputra Delta, and it's therefore exposed to floods as well as to storm surges when cyclones hit the Bay of Bengal.
The sun in Bangladesh regularly shines in the dry season, while in the monsoon season, from June to September, it is quite rarely seen.

The climate in detail


  • Seasons
  • Cities - Saidpur, Dhaka, Chittagong
  • Sea temperature
  • Cyclones
  • When to go
  • What to pack
  • Climate data

Seasons



The dry season runs from November to March. The monsoon has left the country during the month of October, but the rains can sometimes last until November, especially in the south-east, or when a cyclone arrives. In general, however, November is hot but not too much, with highs around 30 °C (86 °F), and sunny.
The actual winter begins in December and is characterized by warm and sunny days, followed by cool nights, especially in the north.
During winter, especially in December and January, fog can form in inland areas (therefore also in Dhaka), and there can be quite cool days, with highs below 20 °C (68 °F).
Furthermore, from December to February, the north wind can sometimes bring cold temperatures at night, around 3/6 °C (37/43 °F) in the north, and around 10 °C (50 °F) in the center-south and in Dhaka.
In February, the temperature begins to rise, and by March, it begins to get really hot.
Spring, from March to May, is actually the hottest season: the average maximum temperatures reach 35 °C (95 °F) in April in inland areas, while they don't go above 32/33 °C (90/91 °F) along the coast, where the hottest month, because of the thermal inertia of the sea, is May. The highest peaks are about 42/43 °C (108/109 °F) in the north, 40 °C (104 °F) in Dhaka and in the center, and 37/38 °C (99/100 °F) in the south. Relative humidity gradually increases, and the heat becomes more and more stifling.
In this season, lines of thunderstorms coming from the Himalayas, called northwesters, bring rainfall accompanied with hail and wind gusts, so much so that in May, more than 250 millimeters (10 inches) of rain fall in the south and 150 mm (6 in) in the north.

Bangladesh

The real monsoon arrives between late May and early June, starting from the south-east. It brings more compact cloudiness, high humidity even during the day, frequent rains, but also a decrease in temperature, which drops to 30/32 °C (86/90 °F) during the day, but remains high at night, about 25 °C (77 °F). The rains are more abundant along the south coast, particularly the south-eastern one (see Chittagong and Cox's Bazar), but also in the north-east, close to the mountains of India (see Sylhet). In July, rainfall amounts to 800 mm (31.5 in) in Sylhet, to 750 mm (29.5 in) in Chittagong, to 985 mm (38.5 in) in Cox's Bazar, and to as high as 1,000 mm (40 in) in Teknaf.
The monsoon is less intense in the west, where the annual rainfall is around 1,500/1,600 mm (60/63 in), with a maximum in July of about 300/350 mm (12/13.5 in), as happens for example in Pabna, Jessore and Rajshahi. More to the south, rainfall reaches 3,500 mm (138 in) per year in Cox's Bazar, and up to 4,000 mm (157 in) in the more southern city of Teknaf. In Sylhet, in the northeast, where, as we said, the other very rainy area is found, it reaches 4,000 mm (157 in) per year.
The monsoon gradually withdraws between October and November.

Cities


Saidpur

Climate chart - Saidpur
In the far north, in cities like Saidpur and Rangpur, in January, the coldest month, lows are around 11 °C (52 °F) and highs around 23 °C (73 °F).
In Saidpur, 2,100 mm (82.5 in) of rain fall per year, with a maximum from June to September.

Dhaka

Climate chart - Dhaka
In the central area, which includes Dhaka, the capital city, the winter temperatures are higher. In Dhaka, the January average is of 19 °C (66 °F).
In Dhaka, precipitation amounts to 1,900 mm (75 in) per year, of which 390 mm (15.3 in) fall in July.

Chittagong

Climate chart - Chittagong
In Chittagong (or Chattogram), on the coast, the average winter temperature is even higher, reaching 20 °C (68 °F) even in January.
In Chittagong, rainfall reaches 2,950 mm (116.5 in) per year.

Sea temperature



The sea is warm enough for swimming all year round, even though, in January and February, its temperature drops to 22.5/23 °C (73/74 °F) in the northernmost part (see Chittagong), and to 23.5/24 °C (74/75 °F) in Cox's Bazar.

Tropical cyclones



Bangladesh is particularly vulnerable to tropical cyclones, which come from the Bay of Bengal. 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). The most intense cyclones on record (which were also among the most destructive in history) occurred in October-November 1876, in November 1970, and in late April 1991.

When to go



The best time to visit Bangladesh is winter, between mid-December and February. 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 in the afternoon or in the evening.

What to pack



In winter: bring spring/autumn clothes (light for the day), a jacket and a sweater for the evening, and possibly a hat and a scarf for cooler evenings in the north (see Rangpur and Saidpur).
In summer: bring tropics-friendly, lightweight clothing of natural fibers, and a light raincoat or umbrella (although the latter is not always effective against the monsoon rains).

Climate data - Bangladesh


Temperatures: °C, Precipitation: mm
Barisal
Barisal, location on the map
Barisal, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.121520242526262626241914
Max temp.252932343432313232323027
Precip.102045100210380425335290190455
Prec. days123611182423181021
Day length111112131314131312121111
Sun hours788875455787

Chittagong
Chittagong, location on the map
Chittagong, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.141721242526262626242016
Max temp.262931323232313132323027
Precip.1020501053356257205352802304510
Prec. days113614192121171031
Humidity67%63%67%74%76%81%84%83%81%78%72%70%
Day length111112131314131312121111
Sun hours999874346788
Sea temp232326283030292929292724

Comilla
Comilla, location on the map
Comilla, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.121620232426262625241914
Max temp.262931323232313132323027
Precip.1025651403153804302902451553515
Prec. days12481518212017921
Day length111112131314131312121111
Sun hours788876566787

Coxs Bazar
Coxs Bazar, location on the map
Coxs Bazar, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.161822242626252525252117
Max temp.273032333332313132323128
Precip.51540853458259857054202555510
Prec. days112413222525201031
Day length111212131313131312121111
Sun hours899986556888
Sea temp242426282930292929292825

Dhaka
Dhaka, location on the map
Dhaka, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.131721242526262626242015
Max temp.252832343433323232323026
Precip.520501302703153903152851752010
Prec. days124814172121171021
Humidity69%61%59%66%73%78%80%79%79%75%69%72%
Day length111112131314131312121111
Sun hours678775555676

Khulna
Khulna, location on the map
Khulna, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.121621242626262626242014
Max temp.252933353534323233323026
Precip.15354060180310370320285150355
Prec. days13361117232117921
Day length111112131314131312121111
Sun hours788885455787

Mymensingh
Mymensingh, location on the map
Mymensingh, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.121519222426262626231814
Max temp.242730323232323232323026
Precip.101540140310410425330305190155
Prec. days12491520232118811
Day length111112131314141312121111
Sun hours677764455776

Rajshahi
Rajshahi, location on the map
Rajshahi, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.111318232426262626231813
Max temp.242833363534323332322926
Precip.101525551352453052402701151510
Prec. days23361012151413521
Day length111112131314141312121111

Rangpur
Rangpur, location on the map
Rangpur, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.111418212325262626231813
Max temp.232630323232323232312925
Precip.10102512027542541534538017055
Prec. days12381519191715711
Day length111112131314141312121111
Sun hours678765566787

Saidpur
Saidpur, location on the map
Saidpur, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.111417212325262626231713
Max temp.232731323233323332312925
Precip.1010259024541041034538515055
Prec. days11261318181615611
Day length111112131314141312121111
Sun hours678775556786

Sylhet
Sylhet, location on the map
Sylhet, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.101217212325252525221712
Max temp.262831323132323232323027
Precip.5401253805907957256104952002510
Prec. days1371522262826201021
Day length111112131314141312121111
Sun hours787764455788



See also the temperatures month by month

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