Weather · May
Orange County weather in May
Average highs of 77°F, lows of 55°F and 0.30 in of rain, from 30 years of weather records.
May is Orange County’s 6th warmest month, with average highs of 77°F and lows of 55°F. That is 2° warmer than April, and 1° below the yearly average high.
- Average high
- 77°F
- Average low
- 55°F
- Precipitation
- 0.30 in
- Wet days
- 2
- Sunrise · sunset
- 5:50 AM · 7:44 PM
What to wear in May
- Warm days: shorts and T-shirts, with a light layer for cooler evenings.
What May weather is good for
May compared with the months around it
Planning a trip? See the best time to visit Orange County and today’s forecast.
Questions
How hot does it get in Orange County in May?
Average highs are 77°F and average lows 55°F, for a daily mean of 66°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in Orange County in May?
May averages 0.30 in of precipitation over about 2 days with at least 0.01 in. It is the 8th wettest month of the year.
What time is sunset in Orange County in May?
Around mid-May the sun rises about 5:50 AM and sets about 7:44 PM, for roughly 13.9 hours of daylight.
Is May a good time to visit Orange County?
Yes. May is one of the mildest months, with highs between 65°F and 85°F and little rain.
NOAA U.S. Climate Normals 1991–2020, Tustin Irvine Rch station (0.4 mi from downtown). Sunrise and sunset are calculated for May 15 at the city’s coordinates.