March weather forecastIrvine, CA

March
Weather in March
March sees both longer daylight hours and an increase in sunshine hours. The climate continues to shift from cool to warm in this vibrant city. The upward trend in temperature from February to March makes outdoor activities more appealing, with residents often spending more time outside. Evenings remain crisp, and the decrease in rainfall to an average of 0.87" (22mm) means fewer interruptions for outings. Welcoming the increase in warmth, Irvine in March emanates an aura of a burgeoning spring.Temperature
During March, the average high-temperature is a still refreshing 66°F (18.9°C), maintaining a close resemblance to that of the preceding month. An average low-temperature of 52°F (11.1°C) marks the nights throughout March.Humidity
The average relative humidity in March in Irvine is 65%.Rainfall
In Irvine, during March, the rain falls for 7.9 days and regularly aggregates up to 0.87" (22mm) of precipitation. In Irvine, during the entire year, the rain falls for 63.7 days and collects up to 7.91" (201mm) of precipitation.Daylight
In March, the average length of the day is 12h and 0min.On the first day of March, sunrise is at 6:18 am and sunset at 5:48 pm PST. On the last day of the month, sunrise is at 6:38 am and sunset at 7:11 pm PDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from PDT to PST.
Sunshine
In Irvine, the average sunshine in March is 8.7h.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in March converts into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in March
Irvine, CA
- Average high temperature in March: 66°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 March: 52°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 March
Irvine, CA
- Average pressure in March: 30.03"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 March
Irvine, CA
- Average wind speed in March: 5.6mph
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 March
Irvine, CA
- Average humidity in March: 65%
The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (56%).
Average rainfall in March
Irvine, CA
- Average rainfall in March: 0.87"
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 March
Irvine, CA
- Average rainfall days in March: 7.9 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 March /
Average sunshine in March
Irvine, CA
- Average daylight in March: 12h 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 March: 8h and 42min
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 March
Irvine, CA
- Average sunshine days in March: 21.3 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 March
Irvine, CA
- Average UV index in March: 4
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 March
Irvine, CA
- Average cloud cover in March: 23
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 March
Irvine, CA
- Average visibility in March: 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).





