Riga, Latvia’s capital and largest city, is a cultural center with museums and concert halls known for its wooden buildings, medieval Old Town and art nouveau architecture. Set on the Baltic Sea at the mouth of the River Daugava, it offers a wide range of water activities, from canal boat tours to beach swimming. Riga is home for more than 700,000 inhabitants and is the largest city in the Baltic States. The coldest months are January and February, when the average temperature is −5 °C (13 °F). 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).