Climate

Bangladesh has a tropical storm environment described by wide occasional varieties in precipitation, high temperatures, and high dampness. Local climatic contrasts in this level nation are minor, however a few varieties can be seen between the climate example of Northern and sourthern area, as the piedmontal fields of northern district has a Monsoon affected Humid subtropical environment. As per Bangladesh Meteorological Department, there are foure seasons in Bangladesh relying upon the temperature, precipitation and course of wind-gentle and cool Winter from December to February, warm and radiant Summer or pre Monsoon season from March to May, fairly cooler and extremely wet Monsoon season from June to September and plesent, more limited and cooler Autumn or post moonson season in October-November.[3] as a rule, greatest summer temperatures range somewhere in the range of 38 and 41 °C (100.4 and 105.8 °F). April is the most sizzling month in many pieces of the country. January is the coolest month, when the normal temperature for a large portion of the nation is 16–20 °C (61–68 °F) during the day and around 10 °C (50 °F) around evening time.
 

Winds are for the most part from the north and northwest in the colder time of year, blowing delicately at 1 to 3 kilometers each hour (0.6 to 1.9 mph) in northern and focal regions and 3 to 6 kilometers each hour (1.9 to 3.7 mph) close to the coast. From March to May, savage tempests, called northwesters by neighborhood English speakers, produce winds of as much as 60 kilometers each hour (37.3 mph). During the exceptional tempests of the late-spring and late rainstorm season, southerly breezes of in excess of 160 kilometers each hour (99.4 mph) cause waves to peak as high as 6 meters (19.7 ft) in the Bay of Bengal, which carries shocking flooding to waterfront areas.Heavy precipitation is normal for Bangladesh making it flood each year. Aside from the somewhat dry western area of Rajshahi, where the yearly precipitation is around 1,600 mm (63.0 in), many pieces of the nation get something like 2,300 mm (90.6 in) of precipitation each year. Due to its area only south of the lower regions of the Himalayas, where rainstorm winds go west and northwest, the district of Sylhet in northeastern Bangladesh gets the best normal precipitation. From 1977 to 1986, yearly precipitation in that locale ran somewhere in the range of 3,280 and 4,780 mm (129.1 and 188.2 in) each year. Normal every day dampness went from March lows of somewhere in the range of 55 and 81% to July highs of somewhere in the range of 94 and 100%, in light of readings taken at chosen stations cross country in 1986. 

About 80% of Bangladesh's downpour falls during the storm season. The storms result from the differences among low and high pneumatic stress regions that outcome from differential warming of land and water. During the hot long periods of April and May hot air ascends over the Indian subcontinent, making low-pressure regions into which surge cooler, dampness bearing breezes from the Indian Ocean. This is the southwest rainstorm, starting in June and normally enduring through September. Isolating against the Indian landmass, the storm streams in two branches, one of which strikes western India. Different goes up the Bay of Bengal and over eastern India and Bangladesh, crossing the plain toward the north and upper east prior to being gone toward the west and northwest by the lower regions of the Himalayas.Natural disasters, like floods, typhoons, cyclones, and sea swells—ruinous waves or floods brought about by flood tides surging up estuaries—assault the country, especially the seaside belt, consistently. Somewhere in the range of 1947 and 1988, 13 extreme twisters hit Bangladesh, causing tremendous death toll and property. In May 1985, for instance, a serious cyclonic tempest pressing 154-kilometer-per-hour (95.7 mph) winds and waves 4 meters (13.1 ft) high cleared into southeastern and southern Bangladesh, killing in excess of 11,000 people, harming in excess of 94,000 houses, killing around 135,000 head of animals, and harming almost 400 kilometers (248.5 mi) of basically required embankments.Annual rainstorm flooding brings about the deficiency of human existence, harm to property and correspondence frameworks, and a lack of drinking water, which prompts the spread of illness. For instance, in 1988 66% of Bangladesh's 64 locale experienced broad flood harm in the wake of abnormally substantial downpours that overwhelmed the waterway frameworks. Millions were left destitute and without consumable water. A big part of Dhaka, including the runway at the Shahjalal International Airport—a significant travel point for catastrophe help supplies—was overflowed. Around 2,000,000 tons (2,204,623 short tons; 1,968,413 long huge loads) of yields were accounted for obliterated, and help work was delivered much more testing than expected in light of the fact that the flood made transportation really troublesome. A twister in April 1989 killed a larger number of than 600 individuals, perhaps some more. 

There are no insurances against tornadoes and sea swells aside from giving preemptive guidance and giving safe public structures where individuals might take cover. Sufficient framework and air transport offices that would facilitate the sufferings of the influenced individuals had not been set up by the last part of the 1980s. Endeavors by the public authority under the Third Five-Year Plan (1985–90) were coordinated toward exact and convenient gauge ability through agrometeorology, marine meteorology, oceanography, hydrometeorology, and seismology. Vital master administrations, gear, and preparing offices were relied upon to be created under the United Nations Development Program. 

Chilly climate is uncommon in Bangladesh. At the point when temperatures lessening to 8 °C (46 °F) or less, individuals without comfortable apparel and living in insufficient homes might kick the bucket from the virus.