April weather forecast
San Diego, CA

Coronado Island in San Diego, California, USA,
Coronado Island in San Diego, California, USA,

Weather in April

April, the same as March, is another enjoyable spring month in San Diego, California, with an average temperature varying between 66.2°F (19°C) and 54.1°F (12.3°C).

Temperature

In April, the average high-temperature is practically the same as in March - a still enjoyable 66.2°F (19°C). In April, the average low-temperature is 54.1°F (12.3°C).

Humidity

In April, the average relative humidity in San Diego, California, is 69%.

Rainfall

In San Diego, during 6.2 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. In San Diego, during the entire year, the rain falls for 61.8 days and collects up to 8.7" (221mm) of precipitation.

Ocean temperature

In April, the average ocean temperature in San Diego is 60.6°F (15.9°C).
Note: For swimming, a surface water temperature of 60.6°F (15.9°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 is 13h and 1min.
On the first day of April in San Diego, sunrise is at 6:36 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:29 pm PDT.

Sunshine

In April, the average sunshine is 10.9h.

UV index

In San Diego, the average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In April, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. 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 Diego?

The average relative humidity in April in San Diego, California, is 69%.

How much does it rain in San Diego in April?

In San Diego, in April, during 6.2 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

What is the ocean temperature in April in San Diego?

In San Diego, California, the average seawater temperature in April is 60.6°F (15.9°C). For swimming, a surface water temperature of 60.6°F (15.9°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).

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

The average day length in April is 13h and 1min.

When are sunrise and sunset in April in San Diego?

On the first day of April in San Diego, California, sunrise is at 6:36 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:29 pm PDT.

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

The average sunshine duration in April is 10.9h.

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

In San Diego, California, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
San Diego, CA

Average temperature in April - San Diego, CA
  • Average high temperature in April: 66.2°F

The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is February (63.1°F).

  • Average low temperature in April: 54.1°F

The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).

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Average pressure in April
San Diego, CA

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

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).

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Average wind speed in April
San Diego, CA

Average wind speed in April - San Diego, CA
  • Average wind speed in April: 6.3mph

The windiest months (with the highest average wind speed) are April and May (6.3mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).

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Average humidity in April
San Diego, CA

Average humidity in April - San Diego, CA
  • Average humidity in April: 69%

The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (59%).

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Average rainfall in April
San Diego, CA

Average rainfall in April - San Diego, CA
  • Average rainfall in April: 0.67"

The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is June (0.12").

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Average rainfall days in April
San Diego, CA

Average rainfall days in April - San Diego, CA
  • Average rainfall days in April: 6.2 days

The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (2.7 days).

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Average sea temperature in April
San Diego, CA

Average sea temperature in April - San Diego, CA
  • Average sea temperature in April: 60.6°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).

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Average daylight in April /
Average sunshine in April
San Diego, CA

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

The month with the longest days is June (Average daylight: 14h and 16min).
The month with the shortest days is December (Average daylight: 10h and 2min).

  • Average sunshine in April: 10h and 54min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in April
San Diego, CA

Average sunshine days in April - San Diego, CA
  • Average sunshine days in April: 21.8 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is July (20.3 days).

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Average UV index in April
San Diego, CA

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

The months with the highest UV index are July, August and September (UV index 6).
The 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 Diego, CA

Average cloud cover in April - San Diego, CA
  • Average cloud cover in April: 21

The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in April
San Diego, CA

Average visibility in April - San Diego, 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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