UC San Diego Weather

Weather and Climate at UCSD

The University of California, San Diego enjoys a Mediterranean climate with mild, wet winters and warm, dry summers.

• Temperature: Average highs range from 65°F (18°C) in winter to 75°F (24°C) in summer, with lows around 50°F (10°C) in winter and 60°F (16°C) in summer.
• Rainfall: Most precipitation occurs from November to March, with an annual average of about 10 inches (254 mm).
• Extreme Weather: While rare, the region can experience Santa Ana winds, which can increase fire risk, and occasional heavy rain leading to flooding.
• Impact on Campus Life: The mild climate facilitates year-round outdoor activities and research. Commuting is generally comfortable, though heavy rain can cause traffic disruptions.