Monthly weather forecast and climate
San Clemente, CA

Weather in January

January, like December, in San Clemente, California, is another comfortable winter month, with average temperature ranging between max 64.2°F (17.9°C) and min 50.9°F (10.5°C). In San Clemente, the average high-temperature in January is essentially the same as in December - a still comfortable 64.2°F (17.9°C). Weather in January »

Weather in February

February, the last month of the winter, in San Clemente, is also an enjoyable month, with average temperature ranging between max 63.1°F (17.3°C) and min 49.6°F (9.8°C). In February, the average high-temperature is almost the same as in January - a still comfortable 63.1°F (17.3°C). Weather in February »

Weather in March

The first month of the spring, March, is still a comfortable month in San Clemente, California, with average temperature ranging between max 64.8°F (18.2°C) and min 50.5°F (10.3°C). In March, the average high-temperature is practically the same as in February - a still enjoyable 64.8°F (18.2°C). Weather in March »

Weather in April

April, the same as March, is another enjoyable spring month in San Clemente, California, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 66.6°F (19.2°C). In April, the average high-temperature is practically the same as in March - a still enjoyable 66.6°F (19.2°C). Weather in April »

Weather in May

The last month of the spring, May, is another comfortable month in San Clemente, California, with average temperature varying between 55°F (12.8°C) and 67.6°F (19.8°C). In San Clemente, the average high-temperature is practically the same as in April - a still enjoyable 67.6°F (19.8°C). Weather in May »

Weather in June

June, the first month of the summer, in San Clemente, is an agreeable month, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 71.2°F (21.8°C). In June, the average high-temperature is almost the same as in May - a pleasant 71.2°F (21.8°C). Weather in June »

Weather in July

July is a moderately hot summer month in San Clemente, California, with temperature in the range of an average high of 75.6°F (24.2°C) and an average low of 62.2°F (16.8°C). In July, the average high-temperature is relatively the same as in June - a moderately hot 75.6°F (24.2°C). Weather in July »

Weather in August

August, the last month of the summer, in San Clemente, is another warm month, with average temperature ranging between min 63.5°F (17.5°C) and max 77.2°F (25.1°C). In San Clemente, the average high-temperature in August is relatively the same as in July - a still warm 77.2°F (25.1°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in San Clemente, California, with average temperature varying between 63.5°F (17.5°C) and 77.4°F (25.2°C). The warmest month is September, with an average high-temperature of 77.4°F (25.2°C) and an average low-temperature of 63.5°F (17.5°C). Weather in September »

Weather in October

October, the same as September, in San Clemente, California, is another pleasant autumn month, with average temperature ranging between min 60.4°F (15.8°C) and max 73.2°F (22.9°C). In San Clemente, the average high-temperature is almost the same as in September - a pleasant 73.2°F (22.9°C). Weather in October »

Weather in November

November, the last month of the autumn, in San Clemente, is also an agreeable month, with average temperature ranging between min 55.6°F (13.1°C) and max 68.7°F (20.4°C). In November, the average high-temperature is almost the same as in October - a still agreeable 68.7°F (20.4°C). Weather in November »

Weather in December

December, the first month of the winter, in San Clemente, is also an enjoyable month, with average temperature ranging between max 62.6°F (17°C) and min 50.4°F (10.2°C). With an average high-temperature of 62.6°F (17°C) and an average low-temperature of 50.4°F (10.2°C), December is the coldest month. Weather in December »
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FAQ

How much does it rain in San Clemente?

Throughout the year, there are 51.1 rainfall days, and 3.66" (93mm) of precipitation is accumulated.

What is the month with the lowest UV index in San Clemente?

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

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

With an average ocean temperature of 58.8°F (14.9°C), February is the month with the coldest seawater in San Clemente, California.

What is the most humid month in San Clemente?

With an average relative humidity of 75%, June is the most humid month.

What is the driest month in San Clemente?

The month with the least rainfall in San Clemente is June when the rain falls for 1.4 days and typically collects 0.08" (2mm) of precipitation.

When are the longest days in San Clemente?

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

What is the month with the most sunshine in San Clemente?

Months with the most sunshine in San Clemente, California, are July and August, with an average of 11.8h of sunshine.

When is the highest UV index in San Clemente?

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

What month is the ocean warmest in San Clemente?

With an average ocean temperature of 68.2°F (20.1°C), August is the month with the warmest seawater.

What is the warmest month in San Clemente?

The warmest month in San Clemente is September, with an average high-temperature of 77.4°F (25.2°C) and an average low-temperature of 63.5°F (17.5°C).

What is the least humid month in San Clemente?

The least humid month in San Clemente, California, is November, with an average relative humidity of 60%.

What is the coldest month in San Clemente?

The coldest month is December, with an average high-temperature of 62.6°F (17°C) and an average low-temperature of 50.4°F (10.2°C).

What is the rainiest month in San Clemente?

The month with the most rainfall is December when the rain falls for 4.8 days and typically aggregates up to 0.71" (18mm) of precipitation.

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

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

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

With an average of 6.5h of sunshine, December has the least sunshine of the year in San Clemente.

Average temperature
San Clemente, CA

Average temperature - San Clemente, CA

The warmest month (with the highest average high temperature) is September (77.4°F).
The month with the lowest average high temperature is December (62.6°F).

Months with the highest average low temperature are August and September (63.5°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).

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Average pressure
San Clemente, CA

Average pressure - San Clemente, CA

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

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Average wind speed
San Clemente, CA

Average wind speed - San Clemente, CA

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (4.9mph).

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Average rainfall
San Clemente, CA

Average rainfall - San Clemente, CA

The wettest month (with the highest rainfall) is December (0.71").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days
San Clemente, CA

Average rainfall days - San Clemente, CA

The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.4 days).

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Average sea temperature
San Clemente, CA

Average sea temperature - San Clemente, CA

The best month for swimming (with the highest average sea temperature) is August (68.3°F).
The coldest months (with the lowest average sea temperature) are January and February (58.9°F).

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Average daylight / Average sunshine
San Clemente, CA

Average daylight / Average sunshine - San Clemente, 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: 11.8h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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Average sunshine days
San Clemente, CA

Average sunshine days - San Clemente, CA

The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (21.6 days).

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Average UV index
San Clemente, CA

Average UV index - San Clemente, 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 Clemente, CA

Average visibility - San Clemente, 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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