Humidity Levels in California During May





The average humidity in May is listed below for places in California. The tables give daily averages along with highest and lowest relative humidity levels.

Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold.

All the numbers here are averages for the years 1961 to 1990.

Average Humidity

In this table, the Daily number is the average of humidity readings taken every three hours throughout the day. Morning percentages are for 7 am and Afternoon measures are for 4 pm local standard time.

Average relative humidity (%) in May
Daily Place Morning Afternoon
Southern California
41 Bakersfield 52 26
68 Long Beach 75 54
74 Los Angeles 78 66
71 San Diego 74 64
71 Santa Barbara 76 60
79 Santa Maria 84 61
Northern California
47 Fresno 62 26
59 Sacramento 72 35
71 San Francisco 78 59
53 Stockton 66 32

Highest and Lowest Humidity

Below are the averages during May for maximum and minimum humidity levels in California. The hours when this month's highest and lowest humidity readings usually occur are given in local standard time.

Daily high and low relative humidity (%) averages in May
High Time Place Low Time
Southern California
57.2 4 am Bakersfield 25.9 4 pm
80.2 4 am Long Beach 54.0 1 pm
82.6 4 am Los Angeles 62.5 1 pm
77.2 4 am San Diego 61.4 1 pm
80.4 4 am Santa Barbara 59.6 1 pm
92.1 4 am Santa Maria 56.6 1 pm
Northern California
71.5 4 am Fresno 26.2 4 pm
80.6 4 am Sacramento 35.2 4 pm
83.1 4 am San Francisco 55.6 1 pm
72.9 4 am Stockton 32.0 4 pm
Reference

World Data Center for Meteorology. Climate of the World.

California Humidity
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