August weather forecastSouth Santa Rosa, CA
August
Weather in August
The last month of the summer, August, is also a moderately hot month in South Santa Rosa, California, with an average temperature varying between 79.9°F (26.6°C) and 55°F (12.8°C).Temperature
In South Santa Rosa, the months of July and August are known for the peak temperatures, reaching an average high of 79.9°F (26.6°C).Humidity
In August, the average relative humidity is 67%.Rainfall
The months with the least rainfall are June through September Rain falls for 0.5 days and accumulates 0.04" (1mm) of rain.Daylight
In South Santa Rosa, the average length of the day in August is 13h and 37min.On the first day of August, sunrise is at 6:13 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:41 pm PDT.
Sunshine
The average sunshine in August is 11.8h.UV index
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In August, an average UV index of 5 transforms into the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
South Santa Rosa, CA
- Average high temperature in August: 79.9°F
The warmest months (with the highest average high temperature) are July and August (79.9°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in August: 55°F
The months with the highest average low temperature are August and September (55°F).
The coldest month (with the lowest average low temperature) is December (42.4°F).
Average pressure in August
South Santa Rosa, CA
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in August
South Santa Rosa, CA
- Average wind speed in August: 5.1mph
The windiest month (with the highest average wind speed) is May (6.8mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in August
South Santa Rosa, CA
- Average humidity in August: 67%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).
Average rainfall in August
South Santa Rosa, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is February (0.91").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in August
South Santa Rosa, CA
- Average rainfall days in August: 0.5 days
The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (0.5 days).
Average daylight in August /
Average sunshine in August
South Santa Rosa, CA
- Average daylight in August: 13h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in August: 11h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in August
South Santa Rosa, CA
- Average sunshine days in August: 27.1 days
The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is March (20.8 days).
Average UV index in August
South Santa Rosa, CA
- Average UV index in August: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
South Santa Rosa, CA
- Average cloud cover in August: 10
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in August
South Santa Rosa, 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).
