San Jose Weather: August
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Average Day Temperature: | 89.2°F |
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Average Night Temperature: | 60.3°F |
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Sea Water Temperature: | 64.8°F |
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Number of Sunny Days: | 28 days |
| Sunshine Hours: | 13.0 - 14.0 hours | |
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Number of Rainy Days: | 0 days |
| Precipitation Totals: | 0.1 in | |
| detailed information | ||
forecast
| San Jose |
Temperature
| San Jose |
Air Temperature in August, °F
The highest day temperature in August 2026 was 99°F. The lowest night temperature was 54°F. The average values for day and night temperatures during August were 84.5°F и 60.0°F respectivly.
San Jose Water Sea Temperature in August, °F
The average sea surface temperature in August 2026 for San Jose was 72.2°F. The maximum and minimum values were 70.0°F and 74.2°F respectively.
Most of the days in August are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in August, in
Precipitation total in August for San Jose is 0.1 in. It makes august one of the least rainy months of the year.
The average wind speed in August is 5.0 mph. This value is relatively stable throughout the year.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for San Jose in August is 12.2 hours.
| Boston | ![]() |
+62 |
| Chicago | ![]() |
+66 |
| Hawaii | ![]() |
+80 |
| Las Vegas | ![]() |
+80 |
| Los Angeles | ![]() |
+72 |
| Maui | ![]() |
+66 |
| Miami | ![]() |
+88 |
| Myrtle Beach | ![]() |
+78 |
| New York | ![]() |
+66 |
| Panama City Beach | ![]() |
+90 |
| San Diego | ![]() |
+70 |
| San Francisco | ![]() |
+60 |
| Santa Monica | ![]() |
+72 |
| Sarasota | ![]() |
+86 |
| Washington | ![]() |
+66 |
| 0900 | ![]() |
64°F | NE 2 mph |
| 1200 | ![]() |
84°F | NW 0 mph |
| 1500 | ![]() |
90°F | E 2 mph |
| 1800 | ![]() |
82°F | E 1 mph |
| 2100 | ![]() |
60°F | N 4 mph |
| 0000 | ![]() |
56°F | N 5 mph |
| 0300 | ![]() |
54°F | N 5 mph |
| 0600 | ![]() |
52°F | N 5 mph |




































