Climate and monthly weather forecast
San Diego, CA

Coronado Island in San Diego, California, USA,
Coronado Island in San Diego, California, USA,

Weather in January

January, like December, in San Diego, California, is another enjoyable winter month, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 64.2°F (17.9°C). In January, the average high-temperature is practically the same as in December - a still comfortable 64.2°F (17.9°C). Weather in January »

Weather in February

The last month of the winter, February, is also an enjoyable month in San Diego, California, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 63.1°F (17.3°C). The coldest month is February, with an average high-temperature of 63.1°F (17.3°C) and an average low-temperature of 51.8°F (11°C). Weather in February »

Weather in March

March, the first month of the spring, in San Diego, is also an enjoyable month, with average temperature ranging between max 64.4°F (18°C) and min 52.7°F (11.5°C). In San Diego, the average high-temperature in March is practically the same as in February - a still enjoyable 64.4°F (18°C). Weather in March »

Weather in April

April, the same as March, is another enjoyable spring month in San Diego, California, with average temperature varying between 66.2°F (19°C) and 54.1°F (12.3°C). In April, the average high-temperature is practically the same as in March - a still comfortable 66.2°F (19°C). Weather in April »

Weather in May

The last month of the spring, May, is another comfortable month in San Diego, California, with average temperature varying between 67.6°F (19.8°C) and 56.3°F (13.5°C). In San Diego, the average high-temperature is practically the same as in April - a still comfortable 67.6°F (19.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in San Diego, California, with average temperature varying between 58.8°F (14.9°C) and 70.7°F (21.5°C). In San Diego, the average high-temperature is almost the same as in May - a pleasant 70.7°F (21.5°C). Weather in June »

Weather in July

July in San Diego, California, is a warm summer month, with average temperature varying between 64.2°F (17.9°C) and 75.4°F (24.1°C). In San Diego, the average high-temperature in July is essentially the same as in June - a warm 75.4°F (24.1°C). Weather in July »

Weather in August

August, the last month of the summer, in San Diego, is also a moderately hot month, with temperature in the range of an average low of 65.7°F (18.7°C) and an average high of 77.4°F (25.2°C). With an average high-temperature of 77.4°F (25.2°C) and an average low-temperature of 65.7°F (18.7°C), August is the warmest month. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in San Diego, California, with average temperature varying between 76.6°F (24.8°C) and 65.1°F (18.4°C). In September, the average high-temperature is essentially the same as in August - a still warm 76.6°F (24.8°C). Weather in September »

Weather in October

October, the same as September, in San Diego, California, is an agreeable autumn month, with temperature in the range of an average high of 73.2°F (22.9°C) and an average low of 61.9°F (16.6°C). In San Diego, California, the average high-temperature is essentially the same as in September - an agreeable 73.2°F (22.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is also an agreeable month in San Diego, California, with temperature in the range of an average low of 57.4°F (14.1°C) and an average high of 68.5°F (20.3°C). In San Diego, California, the average high-temperature is practically the same as in October - a still pleasant 68.5°F (20.3°C). Weather in November »

Weather in December

December, the first month of the winter, in San Diego, is also an enjoyable month, with average temperature ranging between max 63.3°F (17.4°C) and min 52.7°F (11.5°C). In December, the average high-temperature is relatively the same as in November - a comfortable 63.3°F (17.4°C). Weather in December »
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FAQ

How much does it rain in San Diego?

In San Diego, California, during the entire year, the rain falls for 61.8 days and collects up to 8.7" (221mm) of precipitation.

What are the months with the lowest UV index in San Diego?

Months with the lowest UV index in San Diego, California, are January through March, November and December, with an average maximum UV index of 4.

What is the coldest month in San Diego?

With an average high-temperature of 63.1°F (17.3°C) and an average low-temperature of 51.8°F (11°C), February is the coldest month in San Diego.

What is the month with the coldest ocean in San Diego?

February is the month with the coldest seawater in San Diego, California, with an average ocean temperature of 58.6°F (14.8°C).

What is the most humid month in San Diego?

The most humid month in San Diego is June, with an average relative humidity of 73%.

What is the driest month in San Diego?

June is the month with the least rainfall in San Diego, California. Rain falls for 2.7 days and accumulates 0.12" (3mm) of precipitation.

When are the longest days in San Diego?

With an average of 14.3h of daylight, June has the longest days of the year in San Diego.

What are the months with the most sunshine in San Diego?

Months with the most sunshine in San Diego are July and August, with an average of 11.9h of sunshine.

What is the month with the highest UV index in San Diego?

Months with the highest UV index in San Diego, California, are July through September, with an average maximum UV index of 6.

What is the warmest month in San Diego?

With an average high-temperature of 77.4°F (25.2°C) and an average low-temperature of 65.7°F (18.7°C), August is the warmest month in San Diego.

What month is the ocean warmest in San Diego?

With an average ocean temperature of 68°F (20°C), August is the month with the warmest seawater in San Diego, California.

What is the least humid month in San Diego?

With an average relative humidity of 59%, November is the least humid month in San Diego.

What is the wettest month in San Diego?

December is the month with the most rainfall. Rain falls for 5.8 days and accumulates 1.65" (42mm) of precipitation.

What is the month with the shortest days in San Diego?

The month with the shortest days is December, with an average of 10h of daylight.

What is the month with the least sunshine in San Diego?

The month with the least sunshine in San Diego, California, is December, with an average of 6.7h of sunshine.

Average temperature
San Diego, CA

Average temperature - San Diego, CA

The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is February (63.1°F).

The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).

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Average pressure
San Diego, CA

Average pressure - San Diego, CA

The month with the highest atmospheric pressure is January (30.09").
Months with the lowest atmospheric pressure are June and September (29.88").

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Average wind speed
San Diego, CA

Average wind speed - San Diego, CA

The windiest months (with the highest average wind speed) are April and May (6.3mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).

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Average rainfall
San Diego, CA

Average rainfall - San Diego, CA

The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is June (0.12").

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Average rainfall days
San Diego, CA

Average rainfall days - San Diego, CA

The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (2.7 days).

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Average sea temperature
San Diego, CA

Average sea temperature - San Diego, CA

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).

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Average daylight / Average sunshine
San Diego, CA

Average daylight / Average sunshine - San Diego, CA

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

Months with the most sunshine are July and August (Average sunshine: 11.9h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days
San Diego, CA

Average sunshine days - San Diego, CA

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is July (20.3 days).

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Average UV index
San Diego, CA

Average UV index - San Diego, CA

Months with the highest UV index are July, August and September (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average visibility
San Diego, CA

Average visibility - San Diego, CA

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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