Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
San Juan Capistrano records a slight change with August's average high-temperatures adjusting to a still moderately hot 76.8°F (24.9°C) from July's 75.4°F (24.1°C). An average nighttime temperature of 63.3°F (17.4°C) is recorded during August.Humidity
The average relative humidity in August is 69%.Rainfall
In August, the rain falls for 4.1 days. Throughout August, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 69 rainfall days, and 9.09" (231mm) of precipitation is accumulated.Daylight
The average length of the day in August is 13h and 22min.On the first day of the month, sunrise is at 6:03 am and sunset at 7:50 pm. On the last day of August, in San Juan Capistrano, sunrise is at 6:24 am and sunset at 7:16 pm PDT.
Sunshine
August has the most sunshine of the year, with an average of 11.9h of sunshine.UV index
The months with the highest UV index are July through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 6 during August morphs into the following directions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for San Juan Capistrano in August?
What is the average humidity in August?
How much does it rain in San Juan Capistrano in August?
How many hours of daylight does San Juan Capistrano have in August?
When is the sunrise / sunset in August?
What month has the most sunshine?
How many hours of sunshine does San Juan Capistrano have in August?
What are the months with the highest UV index?
What is the UV index reading in August?
Average temperature in August
San Juan Capistrano, CA
- Average high temperature in August: 76.8°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 (62.4°F).
- Average low temperature in August: 63.3°F
The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is February (50°F).
Average pressure in August
San Juan Capistrano, CA
- Average pressure in August: 29.89"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 August
San Juan Capistrano, CA
- Average wind speed in August: 5mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are August, September and October (5mph).
Average humidity in August
San Juan Capistrano, CA
- Average humidity in August: 69%
The month with the highest relative humidity is June (74%).
The month with the lowest relative humidity is November (59%).
Average rainfall in August
San Juan Capistrano, CA
- Average rainfall in August: 0.51"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in August
San Juan Capistrano, CA
- Average rainfall days in August: 4.1 days
The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (3 days).
Average daylight in August /
Average sunshine in August
San Juan Capistrano, 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: 11h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in August
San Juan Capistrano, CA
- Average sunshine days in August: 22.8 days
The month with the most sunshine days is January (24.7 days).
The month with the least sunshine days is May (19.5 days).
Average UV index in August
San Juan Capistrano, 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).
Average cloud cover in August
San Juan Capistrano, CA
- Average cloud cover in August: 11
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in August
San Juan Capistrano, 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).
San Juan Capistrano, California, USA
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