Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
In O'Brien, California, the average high-temperature in May slightly increases from a comfortable 62.4°F (16.9°C) in April to an agreeable 71.2°F (21.8°C). In O'Brien, the average low-temperature is 46°F (7.8°C).Humidity
In O'Brien, the average relative humidity in May is 58%.Rainfall
In O'Brien, California, during 10.3 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, in O'Brien, there are 102.3 rainfall days, and 24.21" (615mm) of precipitation is accumulated.Snowfall
In O'Brien, California, snow does not fall in April through October.Daylight
In May, the average length of the day in O'Brien is 14h and 29min.On the first day of the month, sunrise is at 6:07 am and sunset at 8:05 pm. On the last day of May, in O'Brien, California, sunrise is at 5:40 am and sunset at 8:33 pm PDT.
Sunshine
In O'Brien, the average sunshine in May is 11h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
FAQ
What is the temperature in May in O'Brien?
What is the average humidity in May in O'Brien?
How much does it rain in O'Brien in May?
When it does not snow in O'Brien?
How many hours of daylight does O'Brien have in May?
What time are sunrise and sunset in May in O'Brien?
How long on average sun shines in May in O'Brien?
How high is the UV index in May in O'Brien?
Average temperature in May
O'Brien, CA
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is December (47.8°F).
- Average low temperature in May: 46°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is December (33.6°F).
Average pressure in May
O'Brien, CA
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in May
O'Brien, CA
- Average wind speed in May: 5.1mph
The windiest months (with the highest average wind speed) are March and October (5.3mph).
The calmest months (with the lowest average wind speed) are August and November (4.5mph).
Average humidity in May
O'Brien, CA
- Average humidity in May: 58%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is August (37%).
Average rainfall in May
O'Brien, CA
- Average rainfall in May: 1.89"
The wettest month (with the highest rainfall) is March (4.8").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in May
O'Brien, CA
- Average rainfall days in May: 10.3 days
The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is August (1.7 days).
Average snowfall in May
O'Brien, CA
- Average snowfall in May: 0"
The month with the highest snowfall is November (1.3").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
O'Brien, CA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
O'Brien, CA
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 11h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in May
O'Brien, CA
- Average sunshine days in May: 18.3 days
The month with the most sunshine days is August (27.1 days).
The month with the least sunshine days is March (11.8 days).
Average UV index in May
O'Brien, CA
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in May
O'Brien, CA
- Average cloud cover in May: 23
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in May
O'Brien, CA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).
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