San Jose in september: average Weather, Temperature and Climate
Weather in San Jose in september 2025
The weather in San Jose in the month of september comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
perfect weather UV index: 7
Weather at 6am
65°F
Clear/Sunny
83% of time
14%
3%
3%
Weather at 12pm
85°F
Clear/Sunny
91% of time
7%
2%
2%
Weather at 6pm
70°F
Clear/Sunny
91% of time
5%
3%
2%
Weather at 3am
61°F
80%
10%
8%
2%
Evolution of daily average temperature and precipitation in San Jose in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in San Jose in september.
The climate of San Jose in september is perfect
The climate in september in San Jose is dry ; it never rains.
The climate good in that locality the month of september. Temperatures are up to 85°F. The seasonal minimum is 65°F. Thus, the mean temperature average in september in San Jose is 76°F. These temperatures are far removed from those records observed in San Jose in september with a maximum record of 112°F in 2017 and a minimum record of 47°F in 2021. You You can hope to have about 12 days with temperatures above 86°F, or 40 of time.
On this month of september, day length in San Jose is generally 12:24. The sun rises at 05:50 and sunset is at 18:14.
With ideal weather conditions, september is recommended to go there.
Seasonal average climate and temperature of San Jose in september
Check below seasonal norms These statistics are generated from the weather statements of the past years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 76°F | ||||
| Highest temperature | 85°F | ||||
| Lowest temperature | 65°F | ||||
| Highest record temperature | 112°F (2017) | ||||
| Lowest record temperature | 47°F (2021) | ||||
| Number of days at +86°F | 12 day(s) (40%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Wind | |||||
| Wind speed | 14km/h | ||||
| Wind temperature | 65°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 0.2in | ||||
| Number of days with rainfall | 0 day(s) (1%) | ||||
| Record daily rainfall | 0.5in (2017) | ||||
| Other climate data | |||||
| Humidity | 68% | ||||
| Visibility | 9.74km | ||||
| Cloud cover | 8% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:50 | ||||
| Time of sunset | 18:14 | ||||
| Length of day | 12:24 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | perfect | ||||
How was the weather last september?
Here is the day by day recorded weather in San Jose in september 2024:
54°F to 81°F
54°F to 81°F
59°F to 97°F
65°F to 97°F
65°F to 97°F
65°F to 92°F
59°F to 90°F
58°F to 88°F
61°F to 88°F
54°F to 83°F
52°F to 77°F
52°F to 81°F
54°F to 88°F
58°F to 86°F
54°F to 72°F
54°F to 68°F
54°F to 59°F
58°F to 65°F
58°F to 79°F
54°F to 74°F
54°F to 85°F
59°F to 90°F
65°F to 97°F
68°F to 94°F
59°F to 83°F
54°F to 83°F
59°F to 94°F
61°F to 85°F
56°F to 86°F
59°F to 95°F
Map: other cities in California in september
Cities near San Jose:
| Silicon Valley in september | perfect weather |
| Santa Cruz California in september | perfect weather |
| Pescadero in september | perfect weather |
| Half Moon Bay in september | perfect weather |
| Moss Beach in september | perfect weather |
| Oakland in september | perfect weather |
| San Francisco in september | perfect weather |
| Golden Gate National Recreation Area in september | perfect weather |
| Pacific Grove in september | perfect weather |
| Stockton in september | perfect weather |
| Carmel-by-the-Sea in september | perfect weather |
| Stinson Beach in september | perfect weather |
Click over cities on the map for information about the weather in september.
San Jose
perfect weather
good
tolerable
bad
very bad
Weather data for San Jose in september:
Weather data for San Jose for september are derived from an average of the weather forecast since 2009 in San Jose. There is a margin of error and these forecasts are to be considered as general information only. The weather in San Jose can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to San Jose.