Kolkata: South-west wind activity has increased in the state. As a result, there is a possibility of scattered rain in different places. There may be one or two light to moderate rains in different parts of the country. Rain is also forecast in some districts of South Bengal on Monday, the weather office said. When it rains, the wind speed may increase to 40 to 50 kmph. Five districts of North Bengal are also likely to receive light to moderate rains. Rainfall is expected in Darjeeling, Kalimpong, Jalpaiguri, Kochbihar and Alipurduar.