14.09
mon
mon
Day
77°F
S 6 mph
Precip.
1%
1%
Night
57°F
NE 3 mph
Precip.
17%
17%
15.09
tue
tue
Day
81°F
N 1 mph
Precip.
0%
0%
Night
55°F
N 5 mph
Precip.
11%
11%
16.09
wed
wed
Day
75°F
N 3 mph
Precip.
10%
10%
Night
54°F
NE 2 mph
Precip.
11%
11%
17.09
thu
thu
Day
73°F
S 4 mph
Precip.
1%
1%
Night
57°F
SE 1 mph
Precip.
10%
10%
18.09
fri
fri
Day
77°F
S 5 mph
Precip.
1%
1%
Night
55°F
SE 4 mph
Precip.
12%
12%
19.09
sat
sat
Day
73°F
S 7 mph
Precip.
2%
2%
Night
54°F
SE 4 mph
Precip.
16%
16%
20.09
sun
sun
Day
72°F
SE 6 mph
Precip.
1%
1%
Night
54°F
NE 2 mph
Precip.
11%
11%
sea water
temperature
temperature
| San Jose |
monthly
weather
weather
| San Jose |
current
weather
weather
| San Jose |
14 days
forecast
forecast
| San Jose |
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 69.5°F. The highest and lowest sea temperatures during the month were 72.5°F and 66.7°F.
Air temperature in San Jose, °F
Precipitation total in San Jose, in.
* Charts above show average data for the last 3 years.
Best time for vacation in San Jose
San Jose on a weather map
Places in USA:
Name
°F
24 Hours Forecast
San Jose
Local time: 14:07
September 14, monday
1500
81°F
S
9 mph
9 mph
1800
77°F
SE
7 mph
7 mph
2100
59°F
E
4 mph
4 mph
September 15, tuesday
0000
57°F
NE
3 mph
3 mph
0300
54°F
NE
3 mph
3 mph
0600
54°F
NE
4 mph
4 mph
0900
64°F
N
3 mph
3 mph
1200
81°F
N
1 mph
1 mph
