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
August
Weather in August
Temperature
In Santa Rosa, California, the peak average temperatures are observed in August, with a high of 79.7°F (26.5°C) and a low of 54.7°F (12.6°C).Humidity
In Santa Rosa, the average relative humidity in August is 67%.Rainfall
July and August are months with the least rain in Santa Rosa when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.Daylight
In 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
In Santa Rosa, the average sunshine in August is 11.8h.UV index
In Santa Rosa, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In August, an average UV index of 5 transforms into the following instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month in Santa Rosa?
What is the average August temperature in Santa Rosa?
What is the average humidity in August in Santa Rosa?
What is the driest month in Santa Rosa?
How many days does it rain in August in Santa Rosa?
How many hours of daylight does Santa Rosa have in August?
When is the sunrise / sunset in August in Santa Rosa?
How long on average sun shines in August in Santa Rosa?
What is the UV index intensity in August in Santa Rosa?
Average temperature in August
Santa Rosa, CA
- Average high temperature in August: 79.7°F
The warmest month (with the highest average high temperature) is August (79.7°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in August: 54.7°F
The months with the highest average low temperature are August and September (54.7°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in August
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
Santa Rosa, CA
- Average wind speed in August: 5.2mph
The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).
Average humidity in August
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 (63%).
Average rainfall in August
Santa Rosa, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is February (2.64").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in August
Santa Rosa, CA
- Average rainfall days in August: 0.8 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).
Average daylight in August /
Average sunshine in August
Santa Rosa, CA
- Average daylight in August: 13h and 4min
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 5min
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
Santa Rosa, CA
- Average sunshine days in August: 27.1 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (17.1 days).
Average UV index in August
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
Santa Rosa, CA
- Average cloud cover in August: 10
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in August
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).