April weather forecast
Santa Monica, CA

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The neon-lit fun park in Santa Monica, California, with a view of the iconic Ferris wheel and pier
The neon-lit fun park in Santa Monica, California, with a view of the iconic Ferris wheel and pier

Weather in April

April in Santa Monica, California, is a pleasant spring month, with an average temperature varying between 69.4°F (20.8°C) and 53.6°F (12°C).

Temperature

The average high-temperature in April, at an agreeable 69.4°F (20.8°C), reveals a modest deviation from March's 66.7°F (19.3°C). During April, Santa Monica experiences a consistent low-temperature average of 53.6°F (12°C).

Humidity

In April, the average relative humidity in Santa Monica is 61%.

Rainfall

In Santa Monica, in April, it is raining for 4.6 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, in Santa Monica, there are 48.8 rainfall days, and 7.52" (191mm) of precipitation is accumulated.

Ocean temperature

The months with the coldest seawater in Santa Monica are January through May and December, with an average ocean temperature of 59°F (15°C).
Note: Most individuals do not find swimming at 59°F (15°C) to be enjoyable. As the water temperature declines below 69.8°F (21°C), maintaining control over one's breathing becomes harder.

Daylight

In April, the average length of the day in Santa Monica is 13h and 4min.
On the first day of the month, sunrise is at 6:39 am and sunset at 7:15 pm. On the last day of April, in Santa Monica, sunrise is at 6:04 am and sunset at 7:37 pm PDT.

Sunshine

In Santa Monica, the average sunshine in April is 10.9h.

UV index

In April, the average daily maximum UV index in Santa Monica is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 in April converts into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

What is the usual temperature for Santa Monica in April?

The average high-temperature, in April, in Santa Monica, is 69.4°F (20.8°C), while the average low-temperature is 53.6°F (12°C).

What is the average humidity in April in Santa Monica?

In April, the average relative humidity is 61%.

How many days does it rain in April in Santa Monica?

In Santa Monica, in April, during 4.6 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

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

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

What is the ocean temperature in April in Santa Monica?

In April, the average ocean temperature in Santa Monica is 59°F (15°C). For most, swimming in 59°F (15°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 Santa Monica?

In Santa Monica, California, the average day length in April is 13h and 4min.

What time are sunrise and sunset in April in Santa Monica?

In April, on the first day of the month, sunrise is at 6:39 am and sunset at 7:15 pm. On the last day of the month, in Santa Monica, California, sunrise is at 6:04 am and sunset at 7:37 pm PDT.

How many hours of sunshine does Santa Monica have in April?

In April, the average sunshine duration in Santa Monica, California, is 10.9h.

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

In April, the average daily maximum UV index in Santa Monica is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Santa Monica, CA

Average temperature in April - Santa Monica, CA
  • Average high temperature in April: 69.4°F

The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is December (63.9°F).

  • Average low temperature in April: 53.6°F

The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (50.5°F).

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Average pressure in April
Santa Monica, CA

Average pressure in April - Santa Monica, CA
  • Average pressure in April: 29.98"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).

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Average wind speed in April
Santa Monica, CA

Average wind speed in April - Santa Monica, CA
  • Average wind speed in April: 6.3mph

The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are August and September (4.8mph).

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Average humidity in April
Santa Monica, CA

Average humidity in April - Santa Monica, CA
  • Average humidity in April: 61%

The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (52%).

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Average rainfall in April
Santa Monica, CA

Average rainfall in April - Santa Monica, CA
  • Average rainfall in April: 0.43"

The wettest month (with the highest rainfall) is January (1.54").
The driest months (with the least rainfall) are June and August (0.08").

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Average rainfall days in April
Santa Monica, CA

Average rainfall days in April - Santa Monica, CA
  • Average rainfall days in April: 4.6 days

The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is August (1.8 days).

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Average sea temperature in April
Santa Monica, CA

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

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

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Average daylight in April /
Average sunshine in April
Santa Monica, CA

Average daylight in April / Average sunshine in April - Santa Monica, CA
  • Average daylight in April: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in April: 10h and 5min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The months with the least sunshine are February and December (Average sunshine: 6h and 36min).

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Average sunshine days in April
Santa Monica, CA

Average sunshine days in April - Santa Monica, CA
  • Average sunshine days in April: 25 days

The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is February (21.8 days).

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Average UV index in April
Santa Monica, CA

Average UV index in April - Santa Monica, CA
  • Average UV index in April: 5

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in April
Santa Monica, CA

Average cloud cover in April - Santa Monica, CA
  • Average cloud cover in April: 20

The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in April
Santa Monica, CA

Average visibility in April - Santa Monica, CA
  • Average visibility in April: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Santa Monica, California, USA

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