Measurements:
°C
°F
San Jose
92°F
S 5 mph
Feels like: 90°F
Precip: 0%
World Resorts USA San Jose Weather August Weather in San Jose

San Jose Weather: August

Average Day Temperature: 89.2°F
Average Night Temperature: 60.3°F
Sea Water Temperature: 64.8°F
Number of Sunny Days: 28 days
Sunshine Hours: 13.0 - 14.0 hours
Number of Rainy Days: 0 days
Precipitation Totals: 0.1 in

Air Temperature in August, °F

Select Year: 2026 2025 2024

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

Select Year: 2026 2025 2024

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.

Sunny, Cloudy and Gloomy days

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.

Wind Speed in August, mph

The average wind speed in August is 5.0 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

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.

Best Time to Visit San Jose
The most sunny months:
July 29 days
August 28 days
June 25 days
The most warm months:
July 89.5 °F
August 89.2 °F
September 84.4 °F
Warmest sea temperature:
September 65.2 °F
August 64.9 °F
July 64.6 °F
The most cold months:
December 57.5 °F
January 58.9 °F
February 60.6 °F
The most rainy months:
February 3 days
January 3 days
March 3 days
The most windy months:
May 6 mph
April 6 mph
June 6 mph

San Jose on the Weather Map

USA Resorts:
NAME
F°
Boston +58
Chicago +62
Hawaii +82
Houston +86
Las Vegas +92
Los Angeles +100
Maui +74
Miami +88
Myrtle Beach +70
New York +62
San Diego +84
San Francisco +66
Santa Monica +94
Sarasota +84
Washington +64
24 Hours Weather Forecast
San Jose
Local time: 16:46
05 oct, monday
1800 92°F
S
5 mph
2100 74°F
S
2 mph
06 oct, tuesday
0000 72°F
NE
1 mph
0300 72°F
E
1 mph
0600 72°F
N
1 mph
0900 86°F
S
2 mph
1200 100°F
S
5 mph
1500 102°F
S
8 mph