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
In August, the average high-temperature registers at a still warm 77.2°F (25.1°C), nearly identical to July's 75.6°F (24.2°C). The nighttime temperature, during August, averages of 63.5°F (17.5°C).Humidity
In August, the average relative humidity is 70%.Rainfall
In August, the rain falls for 2.8 days. Throughout August, 0.2" (5mm) of precipitation is accumulated. In San Clemente, during the entire year, the rain falls for 51.1 days and collects up to 3.66" (93mm) of precipitation.Ocean temperature
August is the month with the warmest seawater in San Clemente, with an average ocean temperature of 68.2°F (20.1°C).Note: A surface water temperature of 68.2°F (20.1°C) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 69.8°F (21°C).
Daylight
In San Clemente, the average length of the day in August is 13h and 21min.On the first day of August in San Clemente, sunrise is at 6:03 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:16 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 11.8h of sunshine.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 risk from unsafe exposure to UV radiation for the average person.Note: In August, a regular UV index of 6 translates into these guidelines:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What are August temperatures in San Clemente?
What is the average humidity in August in San Clemente?
How much does it rain in San Clemente in August?
What month is the ocean warmest in San Clemente?
What is the ocean temperature in August in San Clemente?
What is the average length of the day in August in San Clemente?
When are sunrise and sunset in August in San Clemente?
What is the month with the most sunshine in San Clemente?
How long on average sun shines in August in San Clemente?
What is the month with the highest UV index in San Clemente?
How high is the UV index in August in San Clemente?
Average temperature in August
San Clemente, CA
- Average high temperature in August: 77.2°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 (62.6°F).
- Average low temperature in August: 63.5°F
The months with the highest average low temperature are August and September (63.5°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).
Average pressure in August
San Clemente, 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 Clemente, CA
- Average wind speed in August: 4.9mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (4.9mph).
Average humidity in August
San Clemente, CA
- Average humidity in August: 70%
The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (60%).
Average rainfall in August
San Clemente, CA
- Average rainfall in August: 0.2"
The wettest month (with the highest rainfall) is December (0.71").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in August
San Clemente, CA
- Average rainfall days in August: 2.8 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.4 days).
Average sea temperature in August
San Clemente, CA
- Average sea temperature in August: 68.3°F
The best month for swimming (with the highest average sea temperature) is August (68.3°F).
The coldest months (with the lowest average sea temperature) are January and February (58.9°F).
Average daylight in August /
Average sunshine in August
San Clemente, 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 48min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in August
San Clemente, CA
- Average sunshine days in August: 25.3 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in August
San Clemente, 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 Clemente, CA
- Average cloud cover in August: 11
The months with the most cloud cover are March and May (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in August
San Clemente, 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 Clemente, California, USA
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