Seasons in Bangladesh

Bangladesh has 6 seasons according to the Bengali calendar. These seasons are Grishsho, Borsha, Shorot, Hemonto, Sheet and Boshonto. Each season traditionally lasts for 2 months according to the Bengali calendar, but some seasons can last for shorter or longer.^[1] The calendar begins with the hot Grishsho, then monsoons feature in Borsha. Shorot and Hemonto are the equivalents to autumn and late autumn respectively. Sheet is the coldest season, and is equivalent to winter in Bangladesh. Boshonto is the final season in Bangladesh and represents Spring.

Grishsho (গ্রীষ্ম) is the first season of the Bengali calendar, lasting for the two months of Boishakh and Joishtho in the Bengali calendar and from mid-April to mid-June in the Gregorian calendar.^[1] Pohela Boishakh, the Bengali New Year, is celebrated at the start of Grishsho.^[4] Grishsho is the equivalent of Summer and is a hot and dry season.^[1][5]

Borsha (বর্ষা) is the second season of the Bengali calendar, traditionally lasting for the two months of Asharh and Srabon in the Bengali calendar and from mid-June to mid-August in the Gregorian calendar. However, depending on the location Borsha can last all the way from Joishtho to Kartik (mid-May to mid-October). Borsha is the equivalent to the monsoon or wet season.^[1] In this season, the South Asian monsoon comes from the Bay of Bengal onto Bangladesh.^[6]

Shorot (শরৎ) is the third season of the Bengali calendar, lasting for the two months of Bhadro and Ashshin in the Bengali calendar and from mid-August to mid-October in the Gregorian calendar. Shorot is the equivalent of Autumn in Bangladesh.^[1] The sky is mostly clear in Shorot punctuated by white clouds.^[1][5] Durga Puja is celebrated in this season.^[5]

Hemonto (হেমন্ত) is the fourth season of the Bengali calendar, lasting for the two months of Kartik and Ogrohayon in the Bengali calendar and from mid-October to mid-December in the Gregorian calendar. It is the equivalent of late autumn in Bangladesh and is a transitional phase between Shorot and Sheet.^[1] This is the season when people harvest rice crops and paddies.^[5] There is heavy contrast between day and night temperatures, which creates heavy dew.^[1]

Sheet (শীত) is the fifth season of the Bengali calendar, lasting for the two months of Poush and Magh in the Bengali calendar and from mid-December to mid-February in the Gregorian calendar. This season is the equivalent of Winter in Bangladesh and is a cold and dry season.^[1] Different regions get differing amounts of cold during the winter. The north end of Bangladesh is colder than the south.^[5]

Boshonto (বসন্ত) is the sixth and final season of the Bengali calendar, lasting for the two months of Falgun and Choitro in the Bengali calendar and from mid-February to mid-April in the Gregorian calendar. Boshonto is the equivalent of Spring in Bangladesh. While the season goes on for two months, the main part of Spring happens during March.^[1] Many flowers bloom during this season including krishnachura, shimul and palash.^[5]