May weather forecast
San Luis Rey, CA

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Weather in May

The last month of the spring, May, is a pleasant month in San Luis Rey, California, with temperature in the range of an average high of 68.2°F (20.1°C) and an average low of 55°F (12.8°C).

Temperature

San Luis Rey's shift into May sets the average high-temperature at a pleasant 68.2°F (20.1°C), a figure that deviates only slightly from April's 66.7°F (19.3°C). An average low-temperature of 55°F (12.8°C) marks the month of May.

Humidity

The average relative humidity in May in San Luis Rey is 72%.

Rainfall

In San Luis Rey, during May, the rain falls for 6.5 days and regularly aggregates up to 0.35" (9mm) of precipitation. In San Luis Rey, during the entire year, the rain falls for 68.2 days and collects up to 9.49" (241mm) of precipitation.

Daylight

In San Luis Rey, the average length of the day in May 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 May, the average sunshine in San Luis Rey is 11h.

UV index

In May, the average daily maximum UV index in San Luis Rey, California, is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 5 in May transforms into this advice:
Ensure safety - Sun damage prevention is strongly urged. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. 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.
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Frequently asked questions

What is the usual temperature for San Luis Rey in May?

The high-temperature in San Luis Rey, California, during May is 68.2°F (20.1°C) and the low-temperature is 55°F (12.8°C).

What is the average humidity in May in San Luis Rey?

In San Luis Rey, California, the average relative humidity in May is 72%.

How many days does it rain in May in San Luis Rey?

In San Luis Rey, California, in May, it is raining for 6.5 days, with typically 0.35" (9mm) of accumulated precipitation.

How many hours of daylight does San Luis Rey have in May?

In May, the average day length in San Luis Rey is 13h and 53min.

When are sunrise and sunset in May in San Luis Rey?

In May, on the first day of the month, sunrise is at 6:00 am and sunset at 7:32 pm. On the last day of the month, in San Luis Rey, California, sunrise is at 5:41 am and sunset at 7:53 pm PDT.

How many hours of sunshine does San Luis Rey have in May?

In May, the average sunshine duration is 11h.

What is the UV index reading in May in San Luis Rey?

In May, the average daily maximum UV index in San Luis Rey, California, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
San Luis Rey, CA

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).

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Average pressure in May
San Luis Rey, CA

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).

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Average wind speed in May
San Luis Rey, CA

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).

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Average humidity in May
San Luis Rey, CA

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%).

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Average rainfall in May
San Luis Rey, CA

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").

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Average rainfall days in May
San Luis Rey, CA

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).

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Average daylight in May /
Average sunshine in May
San Luis Rey, CA

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).

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Average sunshine days in May
San Luis Rey, CA

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).

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Average UV index in May
San Luis Rey, CA

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).

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Average cloud cover in May
San Luis Rey, CA

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).

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Average visibility in May
San Luis Rey, CA

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).

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San Luis Rey, California, USA

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