Santa Monica
California, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Santa Monica, CA

A night view of the neon-lit fun park in Santa Monica, California, with a view of the iconic Ferris wheel and pier, all reflected in the seawater below
A night view of the neon-lit fun park in Santa Monica, California, with a view of the iconic Ferris wheel and pier, all reflected in the seawater below
April, like March, in Santa Monica, California, is another comfortable spring month, with average temperature fluctuating between 55°F (12.8°C) and 64°F (17.8°C).

Temperature

In April, the average high-temperature is practically the same as in March - a still comfortable 64°F (17.8°C). In Santa Monica, California, in April, the average low-temperature is 55°F (12.8°C).

Rainfall

In Santa Monica, California, in April, during 2.4 rainfall days, 0.7" (16.8mm) of precipitation is typically accumulated. In Santa Monica, California, during the entire year, the rain falls for 32.7 days and collects up to 12.8" (324.9mm) of precipitation.

Ocean temperature

January through May and December, with an average ocean temperature of 59°F (15°C), are months with the coldest seawater in Santa Monica, California.
Note: For swimming, a surface water temperature of 59°F (15°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

In April, the average length of the day in Santa Monica, California, is 13.1h.

Sunshine

In Santa Monica, the average sunshine is 10h.

UV index

In April, the average daily maximum UV index in Santa Monica is 8. A UV Index value of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 8 in April transform into the following instructions:
Take extra precautions. Protection against sun damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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.

What is the temperature in April in Santa Monica?

The average high-temperature, in April, in Santa Monica, California, is 64°F (17.8°C), while the average low-temperature is 55°F (12.8°C).

How much does it rain in Santa Monica in April?

In Santa Monica, during April, the rain falls for 2.4 days and regularly aggregates up to 0.7" (16.8mm) of precipitation.

What are the months with the coldest ocean in Santa Monica?

January through May and December, with an average ocean temperature of 59°F (15°C), are months with the coldest seawater in Santa Monica, California.

How cold is the water in April in Santa Monica?

In Santa Monica, the average seawater temperature in April is 59°F (15°C). Swimming in 59°F (15°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 Santa Monica have in April?

The average length of the day in April in Santa Monica, California, is 13.1h.

How long on average sun shines in April in Santa Monica?

The average sunshine in April is 10h.

How high is the UV index in April in Santa Monica?

In Santa Monica, California, the average daily maximum UV index in April is 8. A UV Index estimate of 8 to 10 represents a very high health threat from the exposure to the Sun's UV radiation.
Average temperature in April - Santa Monica, CA
  • Average high temperature in April: 64°F

Warmest months (with the highest average high temperature) are August and September (71°F).
Months with the lowest average high temperature are February and March (63°F).

  • Average low temperature in April: 55°F

Months with the highest average low temperature are July, August and September (63°F).
Coldest months (with the lowest average low temperature) are January and December (51°F).

Average rainfall in April - Santa Monica, CA
  • Average rainfall in April: 0.7"

The wettest month (with the highest rainfall) is February (3.4").
Driest months (with the lowest rainfall) are June, July and August (0").

Average rainfall days in April - Santa Monica, CA
  • Average rainfall days in April: 2.4 days

The month with the highest number of rainy days is February (7.9 days).
The month with the lowest number of rainy days is July (0.1 days).

Average sea temperature in April - Santa Monica, CA
  • Average sea temperature in April: 59°F

Best months for swimming (with the highest average sea temperature) are August, September and October (66°F).
Coldest months (with the lowest average sea temperature) are January, February, March, April, May and December (59°F).

Average daylight in April / Average sunshine in April - Santa Monica, CA
  • Average daylight in April: 13.1h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in April: 10h

The month with most sunshine is July (Average sunshine: 12h).
Months with least sunshine are January, November and December (Average sunshine: 7).

Average UV index in April - Santa Monica, CA
  • Average UV index in April: 8

The month with the highest UV index is July (UV index 11).
Months with the lowest UV index are January and December (UV index 3).