August weather forecast
San Luis Rey, CA

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Weather in August

August, the last month of the summer in San Luis Rey, is also a moderately hot month, with an average temperature ranging between max 78.6°F (25.9°C) and min 64.2°F (17.9°C).

Temperature

August is the warmest month, exhibiting average temperatures of 78.6°F (25.9°C) at the peak and 64.2°F (17.9°C) at the base.

Humidity

The average relative humidity in August is 69%.

Rainfall

In San Luis Rey, in August, it is raining for 4.3 days, with typically 0.35" (9mm) of accumulated precipitation. Throughout the year, in San Luis Rey, there are 68.2 rainfall days, and 9.49" (241mm) of precipitation is accumulated.

Daylight

The average length of the day in August in San Luis Rey, California, is 13h and 20min.
On the first day of the month, sunrise is at 6:02 am and sunset at 7:48 pm. On the last day of August, in San Luis Rey, sunrise is at 6:23 am and sunset at 7:15 pm PDT.

Sunshine

July and August, with an average of 12h of sunshine, are months with the most sunshine in San Luis Rey, California.

UV index

July through September, with an average maximum UV index of 6, are months with the highest UV index in San Luis Rey. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In August, the maximum UV index of 6 translates into these guidelines:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

What is the warmest month in San Luis Rey?

In San Luis Rey, California, the average temperatures in August are the highest, with a peak at 78.6°F (25.9°C) and a low of 64.2°F (17.9°C).

What is the temperature in August in San Luis Rey?

August temperatures in San Luis Rey vary between a high-temperature of 78.6°F (25.9°C) and a low-temperature of 64.2°F (17.9°C).

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

In August, the average relative humidity in San Luis Rey, California, is 69%.

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

In August, in San Luis Rey, the rain falls for 4.3 days. Throughout August, 0.35" (9mm) of precipitation is accumulated.

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

The average day length in August in San Luis Rey is 13h and 20min.

What time are sunrise and sunset in August in San Luis Rey?

On the first day of August in San Luis Rey, sunrise is at 6:02 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:15 pm PDT.

What is the month with the most sunshine in San Luis Rey?

July and August, with an average of 12h of sunshine, are months with the most sunshine.

How long on average sun shines in August in San Luis Rey?

The average sunshine duration in August in San Luis Rey is 12h.

What are the months with the highest UV index in San Luis Rey?

July through September, with an average maximum UV index of 6, are months with the highest UV index in San Luis Rey.

What is the UV index intensity in August in San Luis Rey?

In San Luis Rey, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
San Luis Rey, CA

Average temperature in August - San Luis Rey, CA
  • Average high temperature in August: 78.6°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 August: 64.2°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 August
San Luis Rey, CA

Average pressure in August - San Luis Rey, CA
  • Average pressure in August: 29.89"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 August
San Luis Rey, CA

Average wind speed in August - San Luis Rey, CA
  • Average wind speed in August: 5mph

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 August
San Luis Rey, CA

Average humidity in August - San Luis Rey, CA
  • Average humidity in August: 69%

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 August
San Luis Rey, CA

Average rainfall in August - San Luis Rey, CA
  • Average rainfall in August: 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 August
San Luis Rey, CA

Average rainfall days in August - San Luis Rey, CA
  • Average rainfall days in August: 4.3 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 August /
Average sunshine in August
San Luis Rey, CA

Average daylight in August / Average sunshine in August - San Luis Rey, CA
  • Average daylight in August: 13h and 2min

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 August: 12h 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 August
San Luis Rey, CA

Average sunshine days in August - San Luis Rey, CA
  • Average sunshine days in August: 21.8 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 August
San Luis Rey, CA

Average UV index in August - San Luis Rey, CA
  • Average UV index in August: 6

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 August
San Luis Rey, CA

Average cloud cover in August - San Luis Rey, CA
  • Average cloud cover in August: 8

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 August
San Luis Rey, CA

Average visibility in August - San Luis Rey, CA
  • Average visibility in August: 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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