‹ Santa Barbara weather by month
Typical September weather
Santa Barbara
California · September
74° days
56° nights
rain is rare · 12½ hours of daylight · ocean 66°
What to pack
- Light jacket
- Sunscreen
What September feels like
September is when the marine layer packs up, the beaches empty out, and harvest starts over the pass. Sundowner winds can push hot dry air off the mountains in a single afternoon and put the county on fire watch.
Rain is genuinely rare — most years, September stays dry start to finish. Humidity stays comfortable; the air never feels heavy.
Can you swim?
The ocean runs about 66° — brisk but swimmable.
The numbers
| Typical high | 74° |
|---|---|
| Typical low | 56° |
| Days with real rain | 0 |
| Total rain | 0.1 in |
| Humidity | comfortable |
| Water temperature | 66° |
| Sunrise / sunset (mid-month) | 6:42 am / 7:05 pm |