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
The arrival of May is marked by an average high-temperature of an agreeable 68.2°F (20.1°C), bearing a close resemblance to April. During May nights, San Luis Rey records an average temperature of 55°F (12.8°C).Humidity
The average relative humidity in May is 72%.Rainfall
In San Luis Rey, in May, during 6.5 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. Throughout the year, there are 68.2 rainfall days, and 9.49" (241mm) of precipitation is accumulated.Daylight
In May, the average length of the day is 13h and 53min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:32 pm. On the last day of May, sunrise is at 5:41 am and sunset at 7:53 pm PDT.
Sunshine
In San Luis Rey, the average sunshine in May is 11h.UV index
The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. When the Sun is at its strongest around midday, find shade and limit exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for San Luis Rey in May?
What is the average humidity in May?
How much does it rain in May?
How many hours of daylight does San Luis Rey have in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
San Luis Rey, CA
- Average high temperature in May: 68.2°F
The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in May: 55°F
The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).
Average pressure in May
San Luis Rey, CA
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed in May
San Luis Rey, CA
- Average wind speed in May: 6mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).
Average humidity in May
San Luis Rey, CA
- Average humidity in May: 72%
The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (60%).
Average rainfall in May
San Luis Rey, CA
- Average rainfall in May: 0.35"
The wettest month (with the highest rainfall) is December (1.97").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in May
San Luis Rey, CA
- Average rainfall days in May: 6.5 days
The month with the highest number of rainy days is March (8 days).
The month with the least rainy days is June (2.7 days).
Average daylight in May /
Average sunshine in May
San Luis Rey, 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: 11h and 0min
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 36min).
Average sunshine days in May
San Luis Rey, CA
- Average sunshine days in May: 21.1 days
The month with the most sunshine days is October (24.2 days).
The month with the least sunshine days is February (20 days).
Average UV index in May
San Luis Rey, 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 Luis Rey, CA
- Average cloud cover in May: 21
The month with the most cloud cover is December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in May
San Luis Rey, 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 Luis Rey, California, USA
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