San Diego, CA Climate


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San Diego, CA has a mild and pleasant Mediterranean climate. The summers are warm and dry, with temperatures usually reaching the mid-70s Fahrenheit (25 Celsius). Winters are mild, with temperatures rarely dropping below 50 degrees Fahrenheit (10 Celsius). Rainfall is low throughout the year, but coastal moisture can make it feel humid in the summer months. Inland areas of San Diego tend to be slightly warmer during the daytime and cooler at night than coastal areas due to differences in elevation.

San Diego, California gets 12 inches of rain, on average, per year. The US average is 38 inches of rain per year.

San Diego averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 266 sunny days per year in San Diego. The US average is 205 sunny days.

San Diego gets some kind of precipitation, on average, 38 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.


Weather Highlights

Summer High: the July high is around 79 degrees
Winter Low: the January low is 46
Rain: averages 12 inches of rain a year
Snow: averages 0 inches of snow a year


Bestplaces Comfort Index

The annual BestPlaces Comfort Index for San Diego is 9.2 (10=best), which means it is one of the most pleasant places in California.

9.6 Summer - 8.6 Winter
June, October and September are the most pleasant months in San Diego, while December and January are the least comfortable months.

  ClimateSan Diego, CaliforniaUnited States
  11.7 in.38.1 in.
  0.0 in.27.8 in.
  38.4 days106.2 days
  266 days205 days
  78.5°85.8°
  45.6°21.7°
  9.27
  5.94.3
  62 ft.2443 ft.
Climate
YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

August is the hottest month for San Diego with an average high temperature of 80.2°, which ranks it as cooler than most places in California. In San Diego, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Diego are July, September and August.
In San Diego, there are 13.4 days annually when the high temperature is over 90°, which is cooler than most places in California.
December has the coldest nighttime temperatures for San Diego with an average of 45.3°. This is one of the warmest places in California.
In San Diego, there are 0.7 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.
In San Diego, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.
The humidity is usually comfortable in San Diego but some summer days can be muggy. August is the most humid month, though it is still relatively mild compared to many other places. The most humid months are August, July and September.
February is the wettest month in San Diego with 2.5 inches of rain, and the driest month is August with 0.0 inches. The wettest season is Spring with 55% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 11.7 inches in San Diego means that it is drier than most places in California.
February is the rainiest month in San Diego with 6.8 days of rain, and August is the driest month with only 0.4 rainy days. There are 38.4 rainy days annually in San Diego, which is less rainy than most places in California. The rainiest season is Spring when it rains 48% of the time and the driest is Autumn with only a 4% chance of a rainy day.
There is rarely any recorded snowfall in San Diego, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in San Diego.
Reviews for San Diego
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I have lived in San Diego for more than half my life (I am 30) and love it. It has something for everyone and more from arts, to sporting events, and all cuisine is  More

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The only real knock again San Diego is the cost of living, but it is paradise compared to most cities of similar size. Those who complain about the traffic here or say  More

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I have lived in San Diego since 1968 and I am now almost 62 years old. I love San Diego, I really do. But it has become so crowded and so expensive over the years. It  More

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