Kolkata has a Tropical wet-and-dry climate. The annual mean temperature is 24.8 °C (80 °F); monthly mean temperatures range from 15°C to 30 °C (59 °F to 86 °F). Summers are hot and humid with temperatures in the low 30’s and during dry spells the maximum temperatures often exceed 40 °C (104 °F) during May and June. Winter tends to last for only about two and a half months, with seasonal lows dipping to 9 °C –11 °C (48.2 °F – 51.8 °F) between December and January.