The climate in Sunderbans is generally soothing and pleasant. Ordinarily, the climate in Sunderbans ranges from 34 °C and 20 °C, and the rainfall is extremely high. So the weather is almost always moist and with the humid air from Bay of Bengal blowing constantly carrying 80% humidity. From October to March the North Easterlies blow here. While from March to September, the Westerly prevails.

Mainly Mangrove Forest is the primary vegetation in the Sunderbans Delta. It is a unique tree that can stand in inundated land for a long time. Spikes rise up from their roots and they help in respiration and overall support of the Mangrove Plants.

Since the sea is nearby, there is a cool sea breeze during night and thus the temperature is favorable all along the day. During the high tides at sea, there is maximum possibility of Sunderbans Delta being over flooded. But at the same time the sea provides an excellent climatic condition for the vegetation and the animals.