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May Weather in Irvine, United States

Last updated: June 24, 2025

In May, the average temperature in Irvine, United States is a pleasant 19°C (67°F). However, be prepared for a range, as temperatures can dip to a chilly 0°C (33°F) and soar up to a warm 34°C (93°F). Visitors should also anticipate about 123 mm (4.9 in) of precipitation over 14 days, contributing to an average humidity level of 84%.

May Temperature in Irvine

In May in Irvine, the average temperature is 19°C (67°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop to as low as 0°C (33°F). It's advisable to pack both light clothing for warm days and warmer layers for cooler evenings during your travels.

May Weather in Irvine: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Irvine, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Irvine, May typically has an average temperature of 19°C (67°F), with highs reaching up to 34°C (93°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec374248566773787671614642
Data source: Temperature data for Irvine generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Irvine

In Irvine in May, the total precipitation amount is 123 mm (4.9 in), which fell over the course of 14 days.

May Precipitation Trends in Irvine

The chart displays monthly precipitation patterns in Irvine, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Irvine, May typically receives around 123 mm (4.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec9415312513412417110111511111381127
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Irvine

In Irvine in May humidity is 84%. With an average temperature of 19°C (67°F), this humidity feels like a warm, sticky embrace that can make traveling somewhat uncomfortable, as the air becomes thick and heavy, often leaving you feeling fatigued and in need of constant hydration.

May Average Humidity in Irvine

This chart illustrates the average monthly humidity levels in Irvine, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Irvine is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%84%84%83%79%66%67%76%89%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Irvine

In Irvine in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Irvine.

Maximum UV Index Levels in Irvine for May

The chart shows the monthly maximum UV Index (UVI) for Irvine in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Irvine typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109753
Data source: Irvine May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Irvine Compares to Other Months

Weather in Irvine varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Irvine, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Irvine, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)94 mm (3.7 inches)88%moderate
February Weather5°C (42°F)153 mm (6.0 inches)88%high
March Weather9°C (49°F)125 mm (4.9 inches)87%high
April Weather13°C (57°F)134 mm (5.3 inches)84%very high
May Weather19°C (67°F)123 mm (4.9 inches)84%very high
June Weather23°C (73°F)171 mm (6.7 inches)83%extreme
July Weather25°C (78°F)100 mm (4.0 inches)79%extreme
August Weather24°C (76°F)115 mm (4.5 inches)66%very high
September Weather22°C (71°F)111 mm (4.4 inches)67%very high
October Weather16°C (61°F)113 mm (4.4 inches)76%high
November Weather8°C (46°F)80 mm (3.2 inches)89%moderate
December Weather5°C (42°F)127 mm (5.0 inches)88%moderate

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