The climate of Riga is humid continental (Koppen Dfb). The coldest months are January and February, when the average temperature is −5 °C (23 °F) but temperatures as low as −20 °C (−4 °F) to −25 °C (−13 °F) can be observed almost every year on the coldest days. The proximity of the sea causes frequent autumn rains and fogs. Continuous snow cover may last eighty days. The summers in Riga are warm and humid with the average temperature of 18 °C (64 °F), while the temperature on the hottest days can exceed 30 °C (86 °F)
