Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The transition into April reveals an average high-temperature of an agreeable 68.5°F (20.3°C), mirroring a close resemblance to March. An average low-temperature of 53.1°F (11.7°C) marks the month of April.Humidity
In April, the average relative humidity is 65%.Rainfall
In San Ysidro, in April, it is raining for 6.3 days, with typically 0.43" (11mm) of accumulated precipitation. In San Ysidro, California, during the entire year, the rain falls for 57.8 days and collects up to 7.28" (185mm) of precipitation.Daylight
The average length of the day in April is 13h and 1min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:08 pm. On the last day of April, sunrise is at 6:01 am and sunset at 7:29 pm PDT.
Sunshine
In April, the average sunshine is 10.7h.UV index
In San Ysidro, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In April, the UV index of 5 transforms into the following advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in April?
What is the average humidity in April?
How much does it rain in April?
How many hours of daylight does San Ysidro have in April?
When is the sunrise / sunset in April in San Ysidro?
How many hours of sunshine does San Ysidro have in April?
What is the UV index intensity in April?
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).
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).
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).
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%).
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").
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).
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).
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).
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).
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).
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).
San Ysidro, California, USA
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