April weather forecast
San Ysidro, CA

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Weather in April

April in San Ysidro, California, is a pleasant spring month, with an average temperature ranging between max 68.5°F (20.3°C) and min 53.1°F (11.7°C).

Temperature

The beginning of April reveals an average high-temperature of an agreeable 68.5°F (20.3°C), showing minimal deviation from the previous month. An average low-temperature of 53.1°F (11.7°C) marks the month of April in San Ysidro.

Humidity

In April, the average relative humidity is 65%.

Rainfall

In San Ysidro, during April, the rain falls for 6.3 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, in San Ysidro, there are 57.8 rainfall days, and 7.28" (185mm) of precipitation is accumulated.

Daylight

In San Ysidro, the average length of the day in April is 13h and 1min.
On the first day of April in San Ysidro, sunrise is at 6:35 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 7:29 pm PDT.

Sunshine

In April, the average sunshine in San Ysidro, California, is 10.7h.

UV index

In San Ysidro, the average daily maximum UV index in April is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 5 during April translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

What are April temperatures in San Ysidro?

The high-temperature in San Ysidro during April is 68.5°F (20.3°C) and the low-temperature is 53.1°F (11.7°C).

What is the average humidity in April in San Ysidro?

The average relative humidity in April in San Ysidro, California, is 65%.

How much does it rain in San Ysidro in April?

In April, the rain falls for 6.3 days. Throughout April, 0.43" (11mm) of precipitation is accumulated.

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

In April, the average day length is 13h and 1min.

What time are sunrise and sunset in April in San Ysidro?

In April, on the first day of the month, sunrise is at 6:35 am and sunset at 7:08 pm. On the last day of the month, in San Ysidro, California, sunrise is at 6:01 am and sunset at 7:29 pm PDT.

How many hours of sunshine does San Ysidro have in April?

The average sunshine duration in April in San Ysidro, California, is 10.7h.

How high is the UV index in April in San Ysidro?

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

Average temperature in April
San Ysidro, CA

Average temperature in April - San Ysidro, CA
  • Average high temperature in April: 68.5°F

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (64°F).

  • Average low temperature in April: 53.1°F

The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is February (50.2°F).

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Average pressure in April
San Ysidro, CA

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

The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.88"Hg).

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Average wind speed in April
San Ysidro, CA

Average wind speed in April - San Ysidro, CA
  • Average wind speed in April: 6mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).

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Average humidity in April
San Ysidro, CA

Average humidity in April - San Ysidro, CA
  • Average humidity in April: 65%

The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is November (55%).

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Average rainfall in April
San Ysidro, CA

Average rainfall in April - San Ysidro, CA
  • Average rainfall in April: 0.43"

The wettest month (with the highest rainfall) is February (1.5").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in April
San Ysidro, CA

Average rainfall days in April - San Ysidro, CA
  • Average rainfall days in April: 6.3 days

The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (1.8 days).

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

Average daylight in April / Average sunshine in April - San Ysidro, CA
  • Average daylight in April: 13h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in April: 10h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in April
San Ysidro, CA

Average sunshine days in April - San Ysidro, CA
  • Average sunshine days in April: 23.3 days

The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (20.8 days).

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Average UV index in April
San Ysidro, CA

Average UV index in April - San Ysidro, 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
San Ysidro, CA

Average cloud cover in April - San Ysidro, CA
  • Average cloud cover in April: 23

The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in April
San Ysidro, CA

Average visibility in April - San Ysidro, 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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San Ysidro, California, USA

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