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 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
With the advent of May, San Gregorio's high-temperatures adjust to a still enjoyable 64.9°F (18.3°C), closely aligning with the preceding month. In San Gregorio, the average temperature during the nights of May drops to a fresh 50.2°F (10.1°C).Humidity
In May, the average relative humidity is 74%.Rainfall
In San Gregorio, California, during May, the rain falls for 3.8 days and regularly aggregates up to 0.31" (8mm) of precipitation. In San Gregorio, California, during the entire year, the rain falls for 57.5 days and collects up to 4.76" (121mm) of precipitation.Daylight
The average length of the day in May is 14h and 11min.On the first day of May, sunrise is at 6:13 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:24 pm PDT.
Sunshine
The average sunshine in May is 10.7h.UV index
The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 4 in May leads to these recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How many days does it rain in May?
What is the average length of the day in May?
When are sunrise and sunset in May in San Gregorio?
How many hours of sunshine does San Gregorio have in May?
How high is the UV index in May?
Average temperature in May
San Gregorio, CA
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (55.8°F).
- Average low temperature in May: 50.2°F
The months with the highest average low temperature are August and September (56.7°F).
The coldest months (with the lowest average low temperature) are January and February (46.4°F).
Average pressure in May
San Gregorio, CA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in May
San Gregorio, CA
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in May
San Gregorio, CA
- Average humidity in May: 74%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is October (68%).
Average rainfall in May
San Gregorio, CA
- Average rainfall in May: 0.31"
The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in May
San Gregorio, CA
- Average rainfall days in May: 3.8 days
The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is June (0.9 days).
Average daylight in May /
Average sunshine in May
San Gregorio, CA
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in May
San Gregorio, CA
- Average sunshine days in May: 22.9 days
The months with the most sunshine days are June and July (26.3 days).
The month with the least sunshine days is March (18.3 days).
Average UV index in May
San Gregorio, CA
- Average UV index in May: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in May
San Gregorio, CA
- Average cloud cover in May: 25
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in May
San Gregorio, 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).
San Gregorio, California, USA
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