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 sea temperature 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
San Clemente experiences a subtle adjustment in high-temperatures to a still refreshing 67.6°F (19.8°C) with the onset of May, maintaining near parity with April's 66.6°F (19.2°C). San Clemente's nights in May experience an average temperature drop to a cool 55°F (12.8°C).Humidity
In May, the average relative humidity is 74%.Rainfall
In San Clemente, in May, it is raining for 4.6 days, with typically 0.24" (6mm) of accumulated precipitation. In San Clemente, California, during the entire year, the rain falls for 51.1 days and collects up to 3.66" (93mm) of precipitation.Ocean temperature
In San Clemente, in May, the average water temperature is 63.1°F (17.3°C).Note: In water with a temperature of 63.1°F (17.3°C), most individuals do not find swimming enjoyable. As the temperature falls from 69.8°F (21°C) to 59°F (15°C), breathing control becomes more difficult.
Daylight
The average length of the day in May is 13h and 54min.On the first day of the month, sunrise is at 6:01 am and sunset at 7:33 pm. On the last day of May, sunrise is at 5:41 am and sunset at 7:54 pm PDT.
Sunshine
The average sunshine in May in San Clemente is 10.6h.UV index
In San Clemente, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: An average UV index of 5 in May transforms into this advice:
Be vigilant - Suggestions to stave off sun damage are provided. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What are May temperatures in San Clemente?
What is the average humidity in May in San Clemente?
How much does it rain in San Clemente in May?
What is the ocean temperature in May in San Clemente?
What is the average length of the day in May in San Clemente?
When is the sunrise / sunset in May in San Clemente?
How long on average sun shines in May in San Clemente?
What is the UV index reading in May in San Clemente?
Average temperature in May
San Clemente, CA
- Average high temperature in May: 67.6°F
The warmest month (with the highest average high temperature) is September (77.4°F).
The month with the lowest average high temperature is December (62.6°F).
- Average low temperature in May: 55°F
The months with the highest average low temperature are August and September (63.5°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).
Average pressure in May
San Clemente, CA
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
San Clemente, CA
- Average wind speed in May: 6mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (4.9mph).
Average humidity in May
San Clemente, CA
- Average humidity in May: 74%
The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (60%).
Average rainfall in May
San Clemente, CA
- Average rainfall in May: 0.24"
The wettest month (with the highest rainfall) is December (0.71").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in May
San Clemente, CA
- Average rainfall days in May: 4.6 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.4 days).
Average sea temperature in May
San Clemente, CA
- Average sea temperature in May: 63°F
The best month for swimming (with the highest average sea temperature) is August (68.3°F).
The coldest months (with the lowest average sea temperature) are January and February (58.9°F).
Average daylight in May /
Average sunshine in May
San Clemente, CA
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 10h and 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in May
San Clemente, CA
- Average sunshine days in May: 23 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in May
San Clemente, CA
- Average UV index in May: 5
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in May
San Clemente, CA
- Average cloud cover in May: 27
The months with the most cloud cover are March and May (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in May
San Clemente, 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 Clemente, California, USA
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