April weather forecast and climate
Irvine, CA

The neon-lit city of Irvine in California, with highway lights and the distant hill ranges and skyscape
The neon-lit city of Irvine in California, with highway lights and the distant hill ranges and skyscape
April is a pleasant spring month in Irvine, California, with temperature in the range of an average high of 68.4°F (20.2°C) and an average low of 54°F (12.2°C).

Temperature

In Irvine, the average high-temperature is relatively the same as in March - a pleasant 68.4°F (20.2°C). The average low-temperature, in Irvine, is 54°F (12.2°C).

Humidity

In April, the average relative humidity is 66%.

Rainfall

In April, in Irvine, the rain falls for 6.8 days. Throughout April, 0.55" (14mm) of precipitation is accumulated. In Irvine, during the entire year, the rain falls for 63.7 days and collects up to 7.91" (201mm) of precipitation.

Daylight

In April, the average length of the day in Irvine is 13.1h.

Sunshine

In April, the average sunshine is 10.9h.

UV index

In April, the average daily maximum UV index in Irvine is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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.

What is the temperature in April in Irvine?

The average high-temperature, in April, is 68.4°F (20.2°C), while the average low-temperature is 54°F (12.2°C).

What is the average humidity in April in Irvine?

In Irvine, California, the average relative humidity in April is 66%.

How many days does it rain in April in Irvine?

In Irvine, California, in April, it is raining for 6.8 days, with typically 0.55" (14mm) of accumulated precipitation.

What is the average length of the day in April in Irvine?

The average length of the day in April is 13.1h.

How many hours of sunshine does Irvine have in April?

In Irvine, California, the average sunshine in April is 10.9h.

How high is the UV index in April in Irvine?

In Irvine, California, the average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.
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"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.88").

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: 13.1h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in April: 10.9h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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

Months with the highest UV index are June, July, August and September (UV index 6).
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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).