Weather in San Jose: August
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Average day temperature: | 85.6°F |
| Average night temperature: | 59.3°F | |
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Sea water temperature: | 62.9°F |
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Number of sunny days: | 29 days |
| Day length: | 13.0 - 14.0 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.1 in. | |
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forecast
| San Jose |
temperature
| San Jose |
Air temperature in August, °F
The highest day temperature during August of 2025 was 94°F. At the same time the lowest night temperature was 56°F. Daily and nightly averages during August were 83.1°F and 61.5°F.
Sea water temperature in San Jose in August, °F
The average sea water temperature in August of 2025 was 67.0°F. The highest and lowest sea temperatures during the month were 70.3°F and 62.2°F.
Mostly all days in August are sunny but cloudy days are also possible.
Precipitation total in August, in.
Precipitation total value in San Jose in August is 0.1 in. Other months of the year show relatively similar values.
The average wind speed value in August is 4.5 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 12.3.
Best time for vacation in San Jose
San Jose on a weather map
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