San Diego climate and temperatures

The climate of San Diego is Temperate oceanic climate (Köppen: Cfa), with warm summers and precipitation throughout the year. Monthly temperatures range from a minimum of 21°C in winter (December–February) to a maximum of 37°C in summer (June–August). The average annual temperature is around 30°C.

During the winter months, nighttime temperatures can drop to an average of 7°C, while summer nights average around 24°C.

Climate table of San Diego

The climate table below gives you a clear overview of the climate in San Diego by month, from average temperatures and rainfall to UV levels. This makes it easy to see when the weather best suits your travel plans.

Best time to visit San Diego

The best time to visit San Diego is February. During this period, temperatures are usually pleasant to warm and there is relatively little rainfall. Especially in February, the climate is favorable, with an average high temperature of 23°C and around 12 mm of rainfall. For a sun or beach holiday, November are the most suitable months. It is often warm to hot and relatively dry during this time. For a city trip, round trip, or active holiday, January, February, November en December are often more comfortable, as it is warm without the heat becoming too intense. The warmest month is August, with an average daytime temperature of around 37°C. The driest month is February, with about 12 mm of rainfall, while May is usually the wettest month of the year, with approximately 198 mm. Snow is rare here, but may occasionally fall in .

Average temperature per month

This chart shows the average daytime (maximum) and nighttime (minimum) temperatures per month in San Diego. The figures are based on climate data from recent years and are presented in degrees Celsius, so you can clearly see the temperature range for each month.

Average rainfall per month

This chart shows the average monthly rainfall in San Diego. The figures are based on long-term climate data and are displayed in millimeters, so you can immediately see which months are drier or wetter.

Average UV index per month

This chart shows the average monthly sun intensity in San Diego. The UV index ranges from 0 (no UV radiation) to 11+ (extreme). A higher UV index means you can burn more quickly, making proper sun protection increasingly important.

Average annual temperature

This chart shows the average annual temperature in San Diego based on data from the past ten years. It allows you to see at a glance how the climate is evolving and whether there are clear warming trends.

Average annual rainfall

This chart shows the average annual rainfall in San Diego over the past ten years. It allows you to see at a glance how much rain falls each year and whether there are clear fluctuations between the years.

Weather experiences in San Diego

The weather in San Diego is rated an average of 4.3 out of 5 stars by 8 visitors. Have you been to San Diego? Share your experience with the weather to help other visitors plan their trip.

Average weather per month

Click on a month below and discover what the weather in San Diego is typically like. For each period, you can instantly see the average temperature, rainfall, wind, and UV index. Thanks to years of historical weather data, you’ll know exactly what to expect during your trip.

• January
• February
• March
• April
• May
• June
• July
• August
• September
• October
• November
• December