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
Fountain Valley's warmest temperatures are experienced in August, with average high temperatures of 78.1°F (25.6°C) and lows of 65.1°F (18.4°C).Humidity
In August, the average relative humidity in Fountain Valley is 67%.Rainfall
In Fountain Valley, in August, during 2.1 rainfall days, 0.2" (5mm) of precipitation is typically accumulated. In Fountain Valley, during the entire year, the rain falls for 59.1 days and collects up to 8.86" (225mm) of precipitation.Daylight
In August, the average length of the day is 13h and 22min.On the first day of August in Fountain Valley, sunrise is at 6:04 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:18 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 12h of sunshine.UV index
July through September, with an average maximum UV index of 6, are months with the highest UV index in Fountain Valley. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 6 in August translates into this advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month in Fountain Valley?
What are the temperatures in Fountain Valley in August?
What is the average humidity in August in Fountain Valley?
How much does it rain in Fountain Valley in August?
What is the average length of the day in August in Fountain Valley?
When are sunrise and sunset in August in Fountain Valley?
What is the month with the most sunshine in Fountain Valley?
How many hours of sunshine does Fountain Valley have in August?
What is the month with the highest UV index in Fountain Valley?
What is the UV index intensity in August in Fountain Valley?
Average temperature in August
Fountain Valley, CA
- Average high temperature in August: 78.1°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (62.6°F).
- Average low temperature in August: 65.1°F
The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).
Average pressure in August
Fountain Valley, CA
- Average pressure in August: 29.9"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in August
Fountain Valley, CA
- Average wind speed in August: 5.3mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (5.2mph).
Average humidity in August
Fountain Valley, CA
- Average humidity in August: 67%
The month with the highest relative humidity is June (72%).
The month with the lowest relative humidity is November (56%).
Average rainfall in August
Fountain Valley, CA
- Average rainfall in August: 0.2"
The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in August
Fountain Valley, CA
- Average rainfall days in August: 2.1 days
The month with the highest number of rainy days is March (7.9 days).
The month with the least rainy days is August (2.1 days).
Average daylight in August /
Average sunshine in August
Fountain Valley, CA
- Average daylight in August: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
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).
Average sunshine days in August
Fountain Valley, CA
- Average sunshine days in August: 26.8 days
The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is February (20 days).
Average UV index in August
Fountain Valley, 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
Fountain Valley, CA
- Average cloud cover in August: 7
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in August
Fountain Valley, 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).
Fountain Valley, California, USA
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