April weather forecastIrvine, CA
April
Weather in April
Being in the heart of spring, the city of Irvine in April bathes in temperatures that sees daily highs up to 68.4°F (20.2°C). The most striking aspect of April’s ambiance is the significant decrease in rainfall from March, recording a mere 0.55" (14mm). The decreased rainfall and increased sunlight foster blossoming local fauna, adding a splash of colors to the city’s landscape. April’s comfortable weather is a perfect invitation to engage in outdoor picnics and all sorts of al fresco activities.Temperature
April's advent presents an average high-temperature of a pleasant 68.4°F (20.2°C), indicating a slight variation from the conditions of the previous month. During the nights in April, an average low-temperature of 54°F (12.2°C) is observed.Humidity
In Irvine, the average relative humidity in April is 66%.Rainfall
In Irvine, during April, the rain falls for 6.8 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 63.7 rainfall days, and 7.91" (201mm) of precipitation is accumulated.Daylight
In April, the average length of the day is 13h and 3min.On the first day of April, sunrise is at 6:37 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:34 pm PDT.
Sunshine
In April, the average sunshine is 10.9h.UV index
The average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In April, the maximum UV index of 5 translates into these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Irvine, CA
- Average high temperature in April: 68.4°F
The warmest month (with the highest average high temperature) is August (79.9°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in April: 54°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (50.5°F).
Average pressure in April
Irvine, CA
- Average pressure in April: 29.96"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
Irvine, CA
- Average wind speed in April: 6.2mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are September and October (4.8mph).
Average humidity in April
Irvine, CA
- Average humidity in April: 66%
The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (56%).
Average rainfall in April
Irvine, CA
- Average rainfall in April: 0.55"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in April
Irvine, CA
- Average rainfall days in April: 6.8 days
The month with the highest number of rainy days is March (7.9 days).
The month with the least rainy days is June (2.2 days).
Average daylight in April /
Average sunshine in April
Irvine, CA
- Average daylight in April: 13h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in April: 10h and 54min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in April
Irvine, CA
- Average sunshine days in April: 21.1 days
The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is May (19.7 days).
Average UV index in April
Irvine, 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, March, November and December (UV index 4).
Average cloud cover in April
Irvine, 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 7).
Average visibility in April
Irvine, 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).
