Climate of West Bengal

West Bengal’s climate varies between tropical savanna in the southern portions and humid sub-tropical in the north. There are four main seasons viz. summer, monsoon, a short autumn, and winter.

The delta region experiences more humidity in the atmosphere during summer season; the western highlands experience a dry summer like northern India, with day temperature ranging from 38 °C to 45 °C .

The nights are comparatively cool carrying moisture from the Bay of Bengal. The early summer is welcomed by brief squalls and thunderstorms known as Kalbaisakhi (Nor'westers). The state gets torrential rain between June and September.

The winter session starts from October and continues till February. The climate of the southern region during winter months is pleasant but there is heavy snowfall in the Himalayan regions.