August weather forecastOpal Cliffs, CA
August
Weather in August
August, the last month of the summer in Opal Cliffs, is another pleasant month, with an average temperature ranging between max 73°F (22.8°C) and min 54.7°F (12.6°C).Temperature
August and September represent the warmest period, with an average high-temperature of 73°F (22.8°C).Humidity
The average relative humidity in August is 74%.Rainfall
The months with the least rainfall are July and August Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.Ocean temperature
August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater.Note: It is risky to swim in 58.1°F (14.5°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.
Daylight
In August, the average length of the day is 13h and 32min.On the first day of August, sunrise is at 6:13 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:37 pm PDT.
Sunshine
In Opal Cliffs, California, the average sunshine in August is 11.6h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 5 in August interprets into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Opal Cliffs, CA
- Average high temperature in August: 73°F
The warmest months (with the highest average high temperature) are August and September (73°F).
The month with the lowest average high temperature is December (57.2°F).
- Average low temperature in August: 54.7°F
The month with the highest average low temperature is September (55.2°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).
Average pressure in August
Opal Cliffs, CA
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in August
Opal Cliffs, CA
- Average wind speed in August: 5.5mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in August
Opal Cliffs, CA
- Average humidity in August: 74%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).
Average rainfall in August
Opal Cliffs, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is December (2.8").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in August
Opal Cliffs, CA
- Average rainfall days in August: 1.2 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.2 days).
Average sea temperature in August
Opal Cliffs, CA
- Average sea temperature in August: 58.1°F
The best months for swimming (with the highest average sea temperature) are August and September (58.1°F).
The coldest month (with the lowest average sea temperature) is April (53.8°F).
Average daylight in August /
Average sunshine in August
Opal Cliffs, CA
- Average daylight in August: 13h and 30min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in August: 11h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in August
Opal Cliffs, CA
- Average sunshine days in August: 27.8 days
The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.4 days).
Average UV index in August
Opal Cliffs, CA
- Average UV index in August: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and November (UV index 3).
Average cloud cover in August
Opal Cliffs, CA
- Average cloud cover in August: 17
The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are July and September (Cloud cover 15).
Average visibility in August
Opal Cliffs, 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).
