Sunnyvale
August
Weather in Sunnyvale for August 2025
Your guide to Sunnyvale weather in August - trends and predictions
In general, the average temperature in Sunnyvale at the beginning of August is 30 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 30.6 °F by the end of August.
Precipitation in Sunnyvale during August is a rare event, with an average of fewer than 2 rainy days.
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30
Dry days
1
Rainy days
0
Snow days
30°/15°
Temperatures
15 km/h
Avg max wind
59 %
Avg humidity
Sunnyvale in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  27° | 2  28° | 3 28° | ||||
| 4 29° | 5 31° | 6  34° | 7 33° | 8 27° | 9 29° | 10 28° |
| 11 27° | 12 29° | 13 30° | 14 31° | 15  30° | 16 31° | 17 29° |
| 18 27° | 19 28° | 20 29° | 21 27° | 22 27° | 23 28° | 24 27° |
| 25 29° | 26 31° | 27 31° | 28  31° | 29 30° | 30 32° | 31 30° |
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Temperatures trend during August in Sunnyvale
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 | Overcast | 27° /14° | 0 mm | 7 | |
| Aug. 2 | Patchy rain possible | 28° /13° | 0.1 mm | 7 | |
| Aug. 3 | Overcast | 28° /14° | 0 mm | 7 | |
| Aug. 4 | Overcast | 29° /14° | 0 mm | 7 | |
| Aug. 5 | Overcast | 31° /13° | 0 mm | 8 | |
| Aug. 6 | Partly cloudy | 34° /15° | 0 mm | 8 | |
| Aug. 7 | Partly cloudy | 33° /16° | 0 mm | 8 | |
| Aug. 8 | Patchy rain possible | 27° /14° | 0.1 mm | 7 | |
| Aug. 9 | Patchy rain possible | 29° /14° | 0.1 mm | 7 | |
| Aug. 10 | Overcast | 28° /14° | 0 mm | 7 | |
| Aug. 11 | Partly cloudy | 27° /14° | 0 mm | 7 | |
| Aug. 12 | Partly cloudy | 29° /14° | 0 mm | 8 | |
| Aug. 13 | Partly cloudy | 30° /14° | 0 mm | 8 | |
| Aug. 14 | Partly cloudy | 31° /16° | 0 mm | 8 | |
| Aug. 15 | Sunny | 30° /16° | 0 mm | 8 | |
| Aug. 16 | Sunny | 31° /16° | 0 mm | 8 | |
| Aug. 17 | Overcast | 29° /16° | 0 mm | 7 | |
| Aug. 18 | Overcast | 27° /15° | 0.1 mm | 7 | |
| Aug. 19 | Partly cloudy | 28° /14° | 0 mm | 7 | |
| Aug. 20 | Sunny | 29° /14° | 0.1 mm | 8 | |
| Aug. 21 | Patchy rain possible | 27° /15° | 0.4 mm | 7 | |
| Aug. 22 | Partly cloudy | 27° /15° | 0 mm | 7 | |
| Aug. 23 | Sunny | 28° /14° | 0 mm | 7 | |
| Aug. 24 | Sunny | 27° /15° | 0 mm | 7 | |
| Aug. 25 | Partly cloudy | 29° /13° | 0 mm | 8 | |
| Aug. 26 | Overcast | 31° /14° | 0 mm | 8 | |
| Aug. 27 | Overcast | 31° /14° | 0 mm | 8 | |
| Aug. 28 | Mist | 31° /15° | 0 mm | 8 | |
| Aug. 29 | Mist | 30° /14° | 0 mm | 7 | |
| Aug. 30 | Partly cloudy | 32° /14° | 0 mm | 8 | |
| Aug. 31 | Overcast | 30° /14° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Sunnyvale in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Sunnyvale forecast closer to your planned date for the most up-to-date weather information.
Sunnyvale in August - FAQ
What are the expected maximum and minimum temperatures in Sunnyvale during August?
Expect warm days with temperatures around 30°, cooling to mild conditions of 15° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Sunnyvale during August?
Rainfall in Sunnyvale during August is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Sunnyvale during August?
The average wind speed in Sunnyvale during August is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
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