Bangladesh is called the land of six seasons (Sadartu). It has a temperate climate because of its physical location. Though the climate of Bangladesh is mainly sub-tropical monsoon, ie warm and humid; Bangla calendar year is traditionally divided into six seasons: Grisma (summer), Barsa (rainy), Sarat (autumn), Hemanta (late autumn), Shhit (winter) and Basanta (spring). Each season comprises two months, but some seasons flow into other seasons, while others are short. Actually, Bangladesh has three distinct seasons: the pre-monsoon hot season from March through May, the rainy monsoon season, which lasts from June through October, and a cool dry winter season from November through February. However, March may also be considered as the spring season, and the period from mid-October through mid-November may be called autumn.

Late autumn (hemanta) The fourth season, covers Kartik and Agrahayan (mid-October to mid-December). Actually it is a transitional phase between autumn and winter. By mid-November the evenings grow cool. The contrast between the daytime and nighttime temperatures results in heavy dew. This is also the time for colds, cough and fever. In this season farmers are very busy with harvesting paddy and celebrate navanna with the new rice crop.

“Voice of spring in autumn
The full moon does carry
As if it paints the floral dreams
Of moonlight on Bakul stems”

                                                            –Rabindranath Tagore