Weather in San Jose: August
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Average day temperature: | 88.3°F |
| Average night temperature: | 76.1°F | |
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Sea water temperature: | 78.3°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: | 0.2 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 91°F. At the same time the lowest night temperature was 72°F. Daily and nightly averages during August were 86.4°F and 76.4°F.
Sea water temperature in San Jose in August, °F
The average sea water temperature in August of 2025 was 79.1°F. The highest and lowest sea temperatures during the month were 80.6°F and 77.5°F.
Almost all days of August in San Jose are sunny. Cloudy days are rare.
Precipitation total in August, in.
Precipitation total value in San Jose in August is 0.2 in. Other months of the year show relatively similar values.
The average wind speed value in August is 7.6 mph It makes August one of the least windy months of the year.
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: 12.4.
Best time for vacation in San Jose
San Jose on a weather map
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