Weather in San Mateo

San Mateo is a city located in the San Francisco Bay Area of California, in the US. The climate in San Mateo is generally mild and temperate, with warm, dry summers and cool, wet winters. The average temperature year-round is around 62°F (17°C). The city is known for its mild climate and ocean breezes, making it an ideal place for outdoor activities such as hiking, biking, and beach-going. In the summer months, temperatures can reach the mid-80s (29°C), while in the winter months, temperatures can dip into the 40s (4°C). Rainfall is fairly consistent throughout the year, with the wettest months being December, January, and February.