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 from March to April sees average high-temperatures adjusting to a still agreeable 72.1°F (22.3°C), from a not significantly different 68°F (20°C). During the nights in April, San Marino experiences a consistent average temperature of 51.4°F (10.8°C).Humidity
In San Marino, the average relative humidity in April is 55%.Rainfall
In April, in San Marino, the rain falls for 4.6 days. Throughout April, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 45 rainfall days, and 6.61" (168mm) of precipitation is accumulated.Daylight
The average length of the day in April is 13h and 4min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:13 pm. On the last day of April, in San Marino, sunrise is at 6:03 am and sunset at 7:36 pm PDT.
Sunshine
In April, the average sunshine in San Marino is 11.3h.UV index
The average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 5 in April transforms into this advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What is the usual temperature for San Marino in April?
What is the average humidity in April in San Marino?
How much does it rain in San Marino in April?
What is the average length of the day in April in San Marino?
What time are sunrise and sunset in April in San Marino?
How long on average sun shines in April in San Marino?
What is the UV index reading in April in San Marino?
Average temperature in April
San Marino, CA
- Average high temperature in April: 72.1°F
The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is December (63.1°F).
- Average low temperature in April: 51.4°F
The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is February (47.1°F).
Average pressure in April
San Marino, CA
- Average pressure in April: 29.97"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in April
San Marino, CA
- Average wind speed in April: 5.7mph
The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in April
San Marino, CA
- Average humidity in April: 55%
The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (47%).
Average rainfall in April
San Marino, CA
- Average rainfall in April: 0.51"
The wettest month (with the highest rainfall) is December (1.34").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in April
San Marino, CA
- Average rainfall days in April: 4.6 days
The month with the highest number of rainy days is March (5.8 days).
The month with the least rainy days is June (1.2 days).
Average daylight in April /
Average sunshine in April
San Marino, 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: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).
Average sunshine days in April
San Marino, CA
- Average sunshine days in April: 24.8 days
The month with the most sunshine days is June (27.1 days).
The month with the least sunshine days is February (22.3 days).
Average UV index in April
San Marino, 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 Marino, CA
- Average cloud cover in April: 16
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in April
San Marino, 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 Marino, California, USA
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