San Luis Obispo in september: average Weather, Temperature and Climate
Weather in San Luis Obispo in september 2025
The weather in San Luis Obispo in september comes from statistical datas on the last 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
67°F
Clear/Sunny
88% of time
8%
3%
2%
Weather at 12pm
83°F
Clear/Sunny
93% of time
5%
2%
2%
Weather at 6pm
68°F
Clear/Sunny
92% of time
6%
2%
1%
Weather at 3am
63°F
90%
6%
4%
2%
Evolution of daily average temperature and precipitation in San Luis Obispo in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in San Luis Obispo in september.
The climate of San Luis Obispo in september is perfect
The weather in september in San Luis Obispo is dry ; it never rains.
The climate quite pleasant in that area september. The thermometer averaged maximum of 83°F. The seasonal minimum is 67°F. Thus, the mean temperature average on this month of september in San Luis Obispo is 76°F. Note that these seasonal averages are in contrast with those observed in San Luis Obispo in the month of september with a maximum record of 103°F in 2009 and a minimum record of 52°F in 2019. You You can hope to have about 7 days with temperatures above 86°F, or 23 of time.
Day length in San Luis Obispo in september is 12:23. Sunrise is at 05:46 and sunset is at 18:09.
With a perfect climate, september is advisable to go in this locality.
Seasonal average climate and temperature of San Luis Obispo in september
Check below seasonal norms These statistics are compiled from the weather statements of the last years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 76°F | ||||
| Highest temperature | 83°F | ||||
| Lowest temperature | 67°F | ||||
| Highest record temperature | 103°F (2009) | ||||
| Lowest record temperature | 52°F (2019) | ||||
| Number of days at +86°F | 7 day(s) (23%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Wind | |||||
| Wind speed | 16km/h | ||||
| Wind temperature | 67°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 0.3in | ||||
| Number of days with rainfall | 1 day(s) (2%) | ||||
| Record daily rainfall | 0.6in (2017) | ||||
| Other climate data | |||||
| Humidity | 60% | ||||
| Visibility | 9.91km | ||||
| Cloud cover | 6% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:46 | ||||
| Time of sunset | 18:09 | ||||
| Length of day | 12:23 | ||||
| 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 Luis Obispo in september 2024:
61°F to 86°F
61°F to 90°F
65°F to 92°F
67°F to 92°F
70°F to 101°F
72°F to 101°F
72°F to 99°F
70°F to 97°F
70°F to 92°F
58°F to 83°F
54°F to 86°F
52°F to 83°F
59°F to 81°F
54°F to 77°F
52°F to 72°F
49°F to 67°F
50°F to 72°F
50°F to 65°F
56°F to 65°F
54°F to 72°F
52°F to 76°F
61°F to 92°F
68°F to 97°F
70°F to 94°F
58°F to 83°F
56°F to 90°F
65°F to 95°F
59°F to 86°F
61°F to 94°F
63°F to 97°F
Map: other cities in California in september
Cities near San Luis Obispo:
| Pismo Beach in september | perfect weather |
| Morro Bay in september | perfect weather |
| Santa Maria in september | perfect weather |
| Cambria in september | perfect weather |
| Lompoc in september | perfect weather |
| Gaviota in september | perfect weather |
| Los Padres National Forest in september | perfect weather |
| Santa Barbara in september | perfect weather |
| Bakersfield in september | perfect weather |
| Big Sur in september | perfect weather |
| Channel Islands National Park in september | perfect weather |
| Ventura in september | perfect weather |
Click over cities on the map for information about the weather in september.
San Luis Obispo
perfect weather
good
tolerable
bad
very bad
Weather data for San Luis Obispo in september:
Weather data for San Luis Obispo for september are derived from an average of the weather forecast since 2009 in San Luis Obispo. There is a margin of error and these forecasts are to be considered as general information only. The weather in San Luis Obispo 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 Luis Obispo.