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 sea temperature 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 Diego's August weather, marked by an average high temperature of 77.4°F and an average low temperature of 65.7°F, is the warmest in the year.Humidity
In August, the average relative humidity is 70%.Rainfall
In San Diego, in August, during 3.8 rainfall days, 0.39" of precipitation is typically accumulated. Throughout the year, in San Diego, there are 61.8 rainfall days, and 8.7" of precipitation is accumulated.Ocean temperature
August is the month with the warmest seawater, with an average ocean temperature of 68°F.Note: The majority of individuals do not enjoy swimming in water that is 68°F. Breathing control becomes more challenging as the water temperature dips from 69.8°F to 59°F.
Daylight
The average length of the day in August in San Diego is 13h and 19min.On the first day of the month, sunrise is at 6:02 am and sunset at 7:47 pm. On the last day of August, sunrise is at 6:22 am and sunset at 7:15 pm PDT.
Sunshine
July and August, with an average of 11.9h of sunshine, are months with the most sunshine in San Diego.UV index
July through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 6 during August leads to these advisories:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
FAQ
What is the hottest time of year in San Diego?
What are the temperatures in San Diego in August?
What is the average humidity in August in San Diego?
How many days does it rain in August in San Diego?
What month is the ocean warmest in San Diego?
What is the ocean temperature in August in San Diego?
How many hours of daylight does San Diego have in August?
When is the sunrise / sunset in August in San Diego?
What is the month with the most sunshine in San Diego?
How long on average sun shines in August in San Diego?
What is the month with the highest UV index in San Diego?
How high is the UV index in August in San Diego?
Average temperature in August
San Diego, CA
- Average high temperature in August: 77.4°F
The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is February (63.1°F).
- Average low temperature in August: 65.7°F
The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).
Average pressure in August
San Diego, 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).
Average wind speed in August
San Diego, CA
- Average wind speed in August: 5.6mph
The windiest months (with the highest average wind speed) are April and May (6.3mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).
Average humidity in August
San Diego, CA
- Average humidity in August: 70%
The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (59%).
Average rainfall in August
San Diego, CA
- Average rainfall in August: 0.39"
The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in August
San Diego, CA
- Average rainfall days in August: 3.8 days
The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (2.7 days).
Average sea temperature in August
San Diego, CA
- Average sea temperature in August: 67.9°F
The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).
Average daylight in August /
Average sunshine in August
San Diego, 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 months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in August
San Diego, CA
- Average sunshine days in August: 21.8 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is July (20.3 days).
Average UV index in August
San Diego, 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 Diego, CA
- Average cloud cover in August: 9
The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in August
San Diego, 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 Diego, California, USA
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