May weather forecast
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

Weather in May

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

Temperature

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

Humidity

In Irvine, California, the average relative humidity in May is 69%.

Rainfall

In May, in Irvine, the rain falls for 5.4 days. Throughout May, 0.31" (8mm) of precipitation is accumulated. Throughout the year, in Irvine, there are 63.7 rainfall days, and 7.91" (201mm) of precipitation is accumulated.

Daylight

In May, the average length of the day is 13h and 55min.
On the first day of May, sunrise is at 6:02 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 7:55 pm PDT.

Sunshine

In Irvine, the average sunshine in May is 11.1h.

UV index

The average daily maximum UV index in May in Irvine is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in May in Irvine?

In Irvine, California, the average relative humidity in May is 69%.

How many days does it rain in May in Irvine?

In Irvine, in May, it is raining for 5.4 days, with typically 0.31" (8mm) of accumulated precipitation.

How many hours of daylight does Irvine have in May?

The average day length in May is 13h and 55min.

What time are sunrise and sunset in May in Irvine?

On the first day of May in Irvine, California, sunrise is at 6:02 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 7:55 pm PDT.

How long on average sun shines in May in Irvine?

In Irvine, California, the average sunshine duration in May is 11.1h.

What is the UV index reading in May in Irvine?

In May, the average daily maximum UV index in Irvine is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.

Average temperature in May
Irvine, CA

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).

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Average pressure in May
Irvine, CA

Average pressure in May - Irvine, CA
  • Average pressure in May: 29.93"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).

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Average wind speed in May
Irvine, CA

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).

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Average humidity in May
Irvine, CA

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%).

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Average rainfall in May
Irvine, CA

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").

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Average rainfall days in May
Irvine, CA

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).

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Average daylight in May /
Average sunshine in May
Irvine, CA

Average daylight in May / Average sunshine in May - Irvine, CA
  • Average daylight in May: 13h and 55min

The month with the longest days is June (Average daylight: 14h and 22min).
The month with the shortest days is December (Average daylight: 9h and 58min).

  • Average sunshine in May: 11.1h

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

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Average sunshine days in May
Irvine, CA

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).

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Average UV index in May
Irvine, CA

Average UV index in May - Irvine, CA
  • Average UV index in May: 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).

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Average cloud cover in May
Irvine, CA

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).

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Average visibility in May
Irvine, CA

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

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