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United StatesThe weather in August in Sunnyvale
It's warm in August in Sunnyvale with an average temperature of 27°C. Temperatures this month range from a low of 25°C to a high of 29°C. At night, you can expect temperatures between 16°C and 18°C.
Looking for great weather? August is a good time to be in Sunnyvale. The temperatures are nice, and there’s little chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in August for Sunnyvale, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 39°C in 2020, Sunnyvale reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 21°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 13°C to a highest value of 24°C.
Rainfall amount
According to weather history, there is only 0,2 mm of precipitation in August. The wind speed is around 4 Bft, mostly coming from the Northwest.
Daily weather in August for Sunnyvale
Click on any day in August to get detailed info about the usual weather on that day in Sunnyvale. Check out the historical temperatures and precipitation over the past 10 years on this day.
August weather comparison
| Sunnyvale | New York | |
|---|---|---|
| Average temperature | 27°C | 30°C |
| Max. temperature | 29°C | 31°C |
| Min. temperature | 16°C | -5°C |
| Total precipitation | 0,2 mm | 79 mm |
| Rainy days | 1 day | 13 days |
Start of August
The month of August starts in Sunnyvale with warm temps, averaging around 26°C during the day and nights around 17°C.
Mid August
By mid-August, daytime temps rise to around 28°C, with nights around 18°C. No precipitation expected during this period, so you can enjoy plenty of sunshine.
End of August
By the end of August, the average daytime temperature in Sunnyvale is around 27°C, while nighttime temps are about 17°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Sunnyvale for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in August in Sunnyvale, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in Sunnyvale
Temperature in August in Sunnyvale over the years
Precipitation charts
These charts show the average amount of precipitation in August in Sunnyvale, California. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in August in Sunnyvale
Total precipitation in August in Sunnyvale over the years
Daily UV index in August in Sunnyvale
This chart shows the average daily UV index in August in Sunnyvale, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in August in Sunnyvale
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Average weather in Sunnyvale by month
Click on a month below to see detailed weather info for Sunnyvale. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.