Annual average weather for San Clemente, United States

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Annual Average Weather for San Clemente, United States

The annual average maximum daily temperature is 18.9°C (66.1°F) which is not that warm but sunbathing may be possible on some clear days. The annual average water temperature is typically 17.1°C (62.8°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water. Annually there are on average 6.1 days of rain per month and 8.7 hours of sun per day.

When is the best time to visit San Clemente?

The best months to visit San Clemente are June, July, August, September, for the best beach weather, the most sunshine and optimal sunbathing and swimming conditions with the least chance of rain.

The weather is warm enough for sunbathing in the months from July to August when the maximum temperature reaches above 22°C (72°F)

The sea is best for swimming between May and September when the sea temperature is above the average 17°C (63°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water.

Can you sunbathe in San Clemente year round?

No, you can't sunbathe in San Clemente all year round. Some months are too cold for sunbathing, however you might enjoy other beach activities such as taking a walk, going hiking along trails or just enjoying the scenery.

The weather is warm enough for sunbathing in the months from July to August when the maximum temperature reaches above 22°C (72°F)

More info about the annual temperatures and sunshine.

Can you swim in San Clemente year round?

No, you can't swim in San Clemente all year round.

The warmest sea water temperatures in San Clemente are found in September when they peak at 21°C (70°F) and lowest in January when they dip to 15°C (59°F).

The sea temperature is above average for swimming between May and September when the sea temperature is above 17°C (63°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water.

The sea is good for swimming in the months from July to September when the sea temperature is above 19°C (66°F)

More info about the annual sea temperatures

When is the hottest month in San Clemente?

The hottest month in San Clemente is August when the average maximum temperature is nice and warm and makes sunbathing pleasant on clear days 23°C (74°F), average temperature is 20°C (68°F) and average minimum temperature is 17°C (63°F).

More info about the annual temperatures and sunshine.

When is the coldest month in San Clemente?

The coolest month in San Clemente is February when the average maximum temperature is 16°C (61°F), average temperature is 12°C (54°F) and average minimum temperature is 8°C (47°F).

More info about the annual temperatures and sunshine

When is the sunniest month in San Clemente?

The sunniest days in San Clemente are in July which has the most hours of sunshine per day. In July the sunshine percentage is 78% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.5hrs making the days very long and bright.

More info about the annual sunshine.

When is the least sunny month in San Clemente?

January has the least sunshine. In January the sunshine percentage is 65% making it sunny but overcast at times. The hours of sunshine per day are 7.2hrs making the days quite long and bright.

More info about the annual sunshine.

When is the driest month in San Clemente?

The driest month in San Clemente is June with 0cm (0inches) of rain and August has the fewest days of rain with 1.8 days with some rain, an extremely dry time to visit the beach.

More info about the annual rainfall

When is the wettest month in San Clemente?

The wettest month in San Clemente is December with 6.4cm (2.5inches) of rain and the most days of rain with 10.2 days with some rain, a pretty wet time to visit the beach.

More info about the annual rainfall.

When is the sea the coldest in San Clemente?

The coldest sea water temperatures in San Clemente are found in January when they dip to 15°C (59°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea.

More info about the annual sea temperatures.

When is the sea the warmest in San Clemente?

The warmest sea water temperatures in San Clemente are found in September when they peak at 21°C (70°F) which is comfortable for swimming though some may prefer warmer water.

More info about the annual sea temperatures.

When is the most humid month in San Clemente?

The most humid month in San Clemente is September with a dew point (an indicator of humidity) of 17°C (63°F) which is OK for most but slightly uncomfortable for some.

More info about the annual humidity.

When is the least humid month in San Clemente?

The least humid month in San Clemente is January with a dew point of 10°C (49°F) which is a bit dry for some.

More info about the annual humidity.

When is the windiest month in San Clemente?

The most windy month in San Clemente is May when the average maximum windspeed is 24KM/H (15MPH) and the average wind speed is 11KM/H (7MPH).

More info about the annual wind conditions.

Annual Temperature for San Clemente

The hottest month in San Clemente is August when the average maximum temperature is 23°C (74°F), average temperature is 20°C (68°F) and average minimum temperature is 17°C (63°F).

The coolest month in San Clemente is February when the average maximum temperature is 16°C (16°F), average temperature is 12°C (54°F) and average minimum temperature is 8°C (47°F).

Annual Sunshine for San Clemente

The longest days in San Clemente are in June, with an average of 14.4 hours of daylight per day. December has the shortest days with an average of 10 hours of daylight per day.

The sunniest days in San Clemente are in July which has the most hours of sunshine per day. The sunshine percentage is 78% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.5hrs making the days very long and bright.

January has the least sunshine. The sunshine percentage is 65% making it sunny but overcast at times. The hours of sunshine per day are 7.2hrs making the days quite long and bright.

The ultraviolet index is the highest in July when it reaches 11.9 and lowest in December when it reaches 3.5.

An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Annual Sea Temperature for San Clemente

The warmest sea water temperatures in San Clemente are found in September when they peak at 21°C (70°F) and lowest in January when they dip to 15°C (59°F).

The sea is best for swimming between May and September when the temperature is above 17°C (63°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water.

Annual Rainfall for San Clemente

The wettest month in San Clemente is December with 6.4cm (2.5inches) of rain and the most days of rain with 10.2 days with some rain, a pretty wet time to visit the beach.

The driest month in San Clemente is June with 0cm (0inches) of rain and August has the fewest days of rain with 1.8 days with some rain, an extremely dry time to visit the beach.

Annual Humidity for San Clemente

The most humid month in San Clemente is September with a dew point (an indicator of humidity) of 17°C (63°F) which is OK for most but slightly uncomfortable for some.

The least humid month in San Clemente is January with a dew point of 10°C (49°F) which is a bit dry for some.

Annual Wind Speed for San Clemente

The most windy month in San Clemente is May when the average maximum windspeed is 24KM/H (15MPH) and the average wind speed is 11KM/H (7MPH).

The least windy month in San Clemente is October when the average maximum windspeed is 19KM/H (12MPH) and the average wind speed is 8KM/H (5MPH).

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