August weather forecastIsla Vista, CA
August
Weather in August
August, the last month of the summer in Isla Vista, is also a moderately hot month, with an average temperature varying between 62.1°F (16.7°C) and 79.2°F (26.2°C).Temperature
August temperatures tend to peak at an average high of 79.2°F (26.2°C) and dip to a low of 62.1°F (16.7°C).Humidity
In August, the average relative humidity is 58%.Rainfall
The months with the least rainfall are June and August Rain falls for 1.3 days and accumulates 0.08" (2mm) of rain.Ocean temperature
July and August, with an average ocean temperature of 62.2°F (16.8°C), are months with the warmest seawater.Note: Most people do not enjoy swimming in water that is 62.2°F (16.8°C). Breathing becomes increasingly challenging as the water temperature dips under 69.8°F (21°C).
Daylight
The average length of the day in August in Isla Vista, California, is 13h and 24min.On the first day of August, sunrise is at 6:10 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:26 pm PDT.
Sunshine
In August, the average sunshine is 11.9h.UV index
The months with the highest UV index in Isla Vista are June through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 6 during August translates into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Isla Vista, CA
- Average high temperature in August: 79.2°F
The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (60.6°F).
- Average low temperature in August: 62.1°F
The month with the highest average low temperature is August (62.1°F).
The coldest month (with the lowest average low temperature) is February (47.7°F).
Average pressure in August
Isla Vista, CA
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in August
Isla Vista, CA
- Average wind speed in August: 5.7mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in August
Isla Vista, CA
- Average humidity in August: 58%
The month with the highest relative humidity is March (64%).
The months with the lowest relative humidity are September, October and November (56%).
Average rainfall in August
Isla Vista, CA
- Average rainfall in August: 0.08"
The wettest month (with the highest rainfall) is January (1.57").
The driest months (with the least rainfall) are June and August (0.08").
Average rainfall days in August
Isla Vista, CA
- Average rainfall days in August: 1.3 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.2 days).
Average sea temperature in August
Isla Vista, CA
- Average sea temperature in August: 62.2°F
The best month for swimming (with the highest average sea temperature) is August (62.2°F).
The coldest month (with the lowest average sea temperature) is April (55.7°F).
Average daylight in August /
Average sunshine in August
Isla Vista, CA
- Average daylight in August: 13h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in August: 11h and 54min
The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in August
Isla Vista, CA
- Average sunshine days in August: 28 days
The month with the most sunshine days is August (28 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in August
Isla Vista, CA
- Average UV index in August: 6
The months with the highest UV index are June, 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
Isla Vista, CA
- Average cloud cover in August: 5
The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in August
Isla Vista, 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).





