Santa Barbara
September
Weather in Santa Barbara for September 2025
Your guide to Santa Barbara weather in September - trends and predictions
In general, the average temperature in Santa Barbara at the beginning of September is 31.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.7 °F by the end of September.
With an average of 3 rainy days, Santa Barbara experiences minimal rainfall in September.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
27
Dry days
3
Rainy days
0
Snow days
25°/16°
Temperatures
13 km/h
Avg max wind
59 %
Avg humidity
Santa Barbara Weather September
Move between months or click on a day
Temperatures trend during September in Santa Barbara
See the weather trend as well as the moving average line
September weather in Santa Barbara day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 28° /17° | 0 mm | 6 | |
| Sept. 2 |  Sunny | 28° /16° | 0 mm | 7 | |
| Sept. 3 | Sunny | 28° /18° | 0 mm | 7 | |
| Sept. 4 | Sunny | 31° /17° | 0 mm | 8 | |
| Sept. 5 | Sunny | 35° /22° | 0 mm | 8 | |
| Sept. 6 | Sunny | 37° /24° | 0 mm | 9 | |
| Sept. 7 | Sunny | 35° /23° | 0 mm | 9 | |
| Sept. 8 | Sunny | 35° /22° | 0 mm | 9 | |
| Sept. 9 | Sunny | 34° /22° | 0 mm | 8 | |
| Sept. 10 | Overcast | 27° /17° | 0 mm | 6 | |
| Sept. 11 | Overcast | 24° /15° | 0 mm | 5 | |
| Sept. 12 | Sunny | 22° /14° | 0 mm | 6 | |
| Sept. 13 | Overcast | 23° /12° | 0 mm | 5 | |
| Sept. 14 |  Patchy rain possible | 23° /13° | 0.3 mm | 5 | |
| Sept. 15 | Patchy rain possible | 21° /12° | 0.4 mm | 5 | |
| Sept. 16 | Sunny | 21° /12° | 0 mm | 6 | |
| Sept. 17 | Sunny | 22° /13° | 0 mm | 6 | |
| Sept. 18 |  Cloudy | 19° /13° | 0 mm | 4 | |
| Sept. 19 | Patchy rain possible | 19° /14° | 0.4 mm | 4 | |
| Sept. 20 |  Partly cloudy | 20° /14° | 0 mm | 6 | |
| Sept. 21 | Patchy rain possible | 19° /12° | 0.2 mm | 4 | |
| Sept. 22 | Partly cloudy | 22° /13° | 0 mm | 6 | |
| Sept. 23 | Partly cloudy | 25° /15° | 0 mm | 7 | |
| Sept. 24 | Partly cloudy | 22° /15° | 0 mm | 6 | |
| Sept. 25 | Patchy rain possible | 21° /15° | 0.2 mm | 5 | |
| Sept. 26 | Partly cloudy | 21° /14° | 0 mm | 6 | |
| Sept. 27 | Partly cloudy | 22° /14° | 0 mm | 6 | |
| Sept. 28 | Partly cloudy | 21° /14° | 0 mm | 6 | |
| Sept. 29 | Partly cloudy | 21° /15° | 0 mm | 6 | |
| Sept. 30 | Partly cloudy | 24° /18° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Santa Barbara in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Santa Barbara forecast closer to your planned date for the most up-to-date weather information.
Change Month
Santa Barbara in September - FAQ
What are the expected maximum and minimum temperatures in Santa Barbara during September?
During September, expect a variety of temperatures with highs around 25° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Santa Barbara during September?
Rainfall in Santa Barbara during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 3 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Santa Barbara during September?
The average wind speed in Santa Barbara during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Santa Barbara
Explore the daily rainfall trends and prepare for Santa Barbaras September weather 💧
UV exposure in Santa Barbara during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
More Santa Barbara weather pages
You are here
Where is Santa Barbara?Get accurate weather forecasts for Santa Barbara, located at latitude 34.421 and longitude -119.698. Stay updated with localized weather information tailored for Santa Barbara.
Found a mistake?
We appreciate your attention to details. Tell us here.