May weather forecastSanta Ana, CA
May
Weather in May
May ushers in a more definitive summer weather pattern in Santa Ana, with temperatures and humidity levels on the rise. Despite the increasing temperatures, rainfall decreases even further to 0.24" (6mm), marking the driest period of the year. The hours of daylight extend to 13.9, allowing for long, sun-soaked days. With wind speeds averaging at 5.8mph (9.3km/h), May promises a sunny, dry, and mildly windy environment.Temperature
Stepping into May, Santa Ana records an average high-temperature of a still agreeable 72°F (22.2°C), almost consistent with April. Santa Ana observes an average low-temperature of 55.9°F (13.3°C) during May nights.Humidity
In Santa Ana, the average relative humidity in May is 65%.Rainfall
In Santa Ana, in May, during 4.8 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. Throughout the year, there are 55 rainfall days, and 7.4" (188mm) of precipitation is accumulated.Daylight
In May, the average length of the day is 13h and 56min.On the first day of the month, sunrise is at 6:01 am and sunset at 7:35 pm. On the last day of May, sunrise is at 5:41 am and sunset at 7:56 pm PDT.
Sunshine
In Santa Ana, the average sunshine in May is 11.3h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In May, the maximum UV index of 5 transforms into these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Santa Ana, CA
- Average high temperature in May: 72°F
The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (63.7°F).
- Average low temperature in May: 55.9°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 (50.2°F).
Average pressure in May
Santa Ana, CA
- Average pressure in May: 29.92"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 May
Santa Ana, CA
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).
Average humidity in May
Santa Ana, CA
- Average humidity in May: 65%
The month with the highest relative humidity is June (66%).
The month with the lowest relative humidity is November (52%).
Average rainfall in May
Santa Ana, CA
- Average rainfall in May: 0.24"
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
Santa Ana, CA
- Average rainfall days in May: 4.8 days
The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.7 days).
Average daylight in May /
Average sunshine in May
Santa Ana, CA
- Average daylight in May: 13h and 54min
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 May: 11h and 18min
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 42min).
Average sunshine days in May
Santa Ana, CA
- Average sunshine days in May: 22.1 days
The month with the most sunshine days is January (25 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in May
Santa Ana, 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, November and December (UV index 4).
Average cloud cover in May
Santa Ana, CA
- Average cloud cover in May: 17
The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in May
Santa Ana, 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).
