May 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
The last month of the spring, May, is also an agreeable month in Irvine, California, with average temperature varying between 69.8°F (21°C) and 56.3°F (13.5°C).

Temperature

In Irvine, California, the average high-temperature is relatively the same as in April - a still agreeable 69.8°F (21°C). In May, the average low-temperature is 56.3°F (13.5°C).

Humidity

The average relative humidity in May is 69%.

Rainfall

In Irvine, during 5.4 rainfall days, 0.31" (8mm) of precipitation is typically 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 Irvine, the average length of the day is 13.9h.

Sunshine

The average sunshine in Irvine is 11.1h.

UV index

In Irvine, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. 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 May in Irvine?

In Irvine, in May, the average high-temperature is 69.8°F (21°C), and the average low-temperature is 56.3°F (13.5°C).

What is the average humidity in May in Irvine?

The average relative humidity in May is 69%.

How many days does it rain in May in Irvine?

In May, in Irvine, the rain falls for 5.4 days. Throughout May, 0.31" (8mm) of precipitation is accumulated.

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

In May, the average length of the day in Irvine, California, is 13.9h.

How long on average sun shines in May in Irvine?

The average sunshine in May is 11.1h.

What is the UV index intensity in May in Irvine?

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.
Average temperature in May - Irvine, CA
  • Average high temperature in May: 69.8°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 May: 56.3°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 May - Irvine, CA
  • Average pressure in May: 29.93"

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 May - Irvine, CA
  • Average wind speed in May: 6mph

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 May - Irvine, CA
  • Average humidity in May: 69%

The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (56%).

Average rainfall in May - Irvine, CA
  • Average rainfall in May: 0.31"

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 May - Irvine, CA
  • Average rainfall days in May: 5.4 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 May / Average sunshine in May - Irvine, CA
  • Average daylight in May: 13.9h

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 May: 11.1h

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 May - Irvine, CA
  • Average sunshine days in May: 19.7 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 May - Irvine, CA
  • Average UV index in May: 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 May - Irvine, CA
  • Average cloud cover in May: 19

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 May - Irvine, CA
  • Average visibility in May: 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).