San Clemente
California, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
San Clemente, CA

April, the same as March, is another comfortable spring month in San Clemente, California, with average temperature varying between 52.7°F (11.5°C) and 66.6°F (19.2°C).

Temperature

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

Humidity

In San Clemente, California, the average relative humidity in April is 70%.

Rainfall

In April, in San Clemente, the rain falls for 5.8 days. Throughout April, 0.31" (8mm) of precipitation is accumulated. Throughout the year, in San Clemente, there are 51.1 rainfall days, and 3.66" (93mm) of precipitation is accumulated.

Ocean temperature

In April, the average ocean temperature is 60.4°F (15.8°C).
Note: For swimming, a surface water temperature of 60.4°F (15.8°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

The average length of the day in April is 13h.

Sunshine

In San Clemente, the average sunshine is 10.5h.

UV index

In April, the average daily maximum UV index in San Clemente is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: In April, the average maximum UV index of 5 translate into the following recommendations:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in April in San Clemente?

In San Clemente, California, in April, the average high-temperature is 66.6°F (19.2°C), and the average low-temperature is 52.7°F (11.5°C).

What is the average humidity in April in San Clemente?

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

How much does it rain in San Clemente in April?

In San Clemente, in April, it is raining for 5.8 days, with typically 0.31" (8mm) of accumulated precipitation.

What is the ocean temperature in April in San Clemente?

In April, the average ocean temperature in San Clemente is 60.4°F (15.8°C). 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).

What is the average length of the day in April in San Clemente?

In April, the average length of the day in San Clemente 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 reading in April in San Clemente?

In April, the average daily maximum UV index in San Clemente, California, is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.
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).

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%).

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 lowest rainfall) is June (0.08").

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 lowest number of rainy days is June (1.4 days).

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).
Coldest months (with the lowest average sea temperature) are January and February (58.9°F).

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 shortest days is December (Average daylight: 10h).

  • Average sunshine in April: 10.5h

Months with most sunshine are July and August (Average sunshine: 11.8h).
The month with least sunshine is December (Average sunshine: 6.5h).

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).