Measurements:
°C
°F
CURRENT WEATHER
07:27
San Jose
52°F
NE 4 mph
Feels like: 52°F
Precip: 9%
World Resorts USA San Jose Weather

7 Day Weather Forecast

09.15
tue
DAY
84°F
NW 0 mph
precip
0%
NIGHT
56°F
N 5 mph
precip
11%
09.16
wed
DAY
80°F
NE 3 mph
precip
9%
NIGHT
54°F
NE 2 mph
precip
10%
09.17
thu
DAY
76°F
S 5 mph
precip
1%
NIGHT
58°F
SE 2 mph
precip
10%
09.18
fri
DAY
82°F
S 6 mph
precip
1%
NIGHT
58°F
SE 2 mph
precip
9%
09.19
sat
DAY
84°F
NW 5 mph
precip
1%
NIGHT
62°F
SE 1 mph
precip
8%
09.20
sun
DAY
84°F
S 4 mph
precip
9%
NIGHT
64°F
NE 2 mph
precip
16%
09.21
mon
DAY
86°F
NW 4 mph
precip
9%
NIGHT
70°F
NE 1 mph
precip
11%

San Jose Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for San Jose was 20.3°F. The maximum and minimum values were 18.9°F and 22.0°F respectively.

San Jose on the Weather Map

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 84.5 °F
Warmest sea temperature:
August 64.9 °F
September 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
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