April weather forecast and climate
San Clemente, CA

Weather in April

April, like March, in San Clemente, California, is another comfortable spring month, 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).

Temperature

In April, the average high-temperature is relatively the same as in March - a still enjoyable 66.6°F (19.2°C). In San Clemente, the average low-temperature is 52.7°F (11.5°C).

Humidity

In April, the average relative humidity is 70%.

Rainfall

In San Clemente, California,, it is raining for 5.8 days, with typically 0.31" (8mm) of accumulated precipitation. In San Clemente, California, during the entire year, the rain falls for 51.1 days and collects up to 3.66" (93mm) of precipitation.

Ocean temperature

In San Clemente, the average seawater temperature in April is 60.4°F (15.8°C).
Note: For most, swimming in 60.4°F (15.8°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

In San Clemente, the average length of the day in April is 13h.

Sunshine

In April, the average sunshine is 10.5h.

UV index

In San Clemente, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 in April transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in April in San Clemente?

The average relative humidity in April in San Clemente is 70%.

How many days does it rain in April in San Clemente?

In San Clemente, California, in April, during 5.8 rainfall days, 0.31" (8mm) of precipitation is typically accumulated.

How cold is the water in April in San Clemente?

In San Clemente, California, the average seawater temperature in April is 60.4°F (15.8°C). Swimming in 60.4°F (15.8°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

How many hours of daylight does San Clemente have in April?

In San Clemente, the average length of the day in April is 13h.

How long on average sun shines in April in San Clemente?

In San Clemente, California, the average sunshine in April is 10.5h.

What is the UV index intensity in April in San Clemente?

In April, the average daily maximum UV index in San Clemente, California, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in April
San Clemente, CA

Average temperature in April - San Clemente, CA
  • Average high temperature in April: 66.6°F

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).

  • Average low temperature in April: 52.7°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 in April
San Clemente, CA

Average pressure in April - San Clemente, CA
  • Average pressure in April: 29.96"

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 in April
San Clemente, CA

Average wind speed in April - San Clemente, CA
  • Average wind speed in April: 6.2mph

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 humidity in April
San Clemente, CA

Average humidity in April - San Clemente, CA
  • Average humidity in April: 70%

The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (60%).

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Average rainfall in April
San Clemente, CA

Average rainfall in April - San Clemente, CA
  • Average rainfall in April: 0.31"

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 in April
San Clemente, CA

Average rainfall days in April - San Clemente, CA
  • Average rainfall days in April: 5.8 days

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 in April
San Clemente, CA

Average sea temperature in April - San Clemente, CA
  • Average sea temperature in April: 60.4°F

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 in April /
Average sunshine in April
San Clemente, CA

Average daylight in April / Average sunshine in April - San Clemente, CA
  • Average daylight in April: 13h

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

  • Average sunshine in April: 10.5h

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 in April
San Clemente, CA

Average sunshine days in April - San Clemente, CA
  • Average sunshine days in April: 22.8 days

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 in April
San Clemente, CA

Average UV index in April - San Clemente, CA
  • Average UV index in April: 5

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 cloud cover in April
San Clemente, CA

Average cloud cover in April - San Clemente, CA
  • Average cloud cover in April: 25

Months with the most cloud cover are March and May (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 11).

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Average visibility in April
San Clemente, CA

Average visibility in April - San Clemente, CA
  • Average visibility in April: 6mi

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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