September · United States
Best time to visit Santa Barbara in September Weather, crowds & prices
Weather in Santa Barbara in September
Average temperature 21°C, 8 mm of rain, about 26 days with 6+ hours of sunshine and 62% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.1/10
Ranked #3 of 12 months
- Avg temp
- 21°C
- Rainfall
- 8 mm
- Humidity
- 62%
- Days with 6h+ sun
- 26
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Santa Barbara scores 9.1/10 for beach and coastal travel - one of the top 12-month picks (#3). Expect around 21°C, 8 mm of rain, and roughly 26 days with 6+ hours of sunshine this month.
Santa Barbara pairs Spanish colonial architecture and a palm-lined waterfront with California wine country.
September ranks 3rd of 12 for Santa Barbara — one of the best windows
With 21°C (70°F) on average, September delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
At just 8 mm for the month, rain will not shape your plans; you get about 26 days with 6+ hours of sunshine and 12.2 hours of daylight.
On our climate-comfort scale this is one of the strongest months of the year for Santa Barbara at 9.1/10 (3rd of 12), just behind August at 9.7/10.
Pack light clothing, swimwear and real sun protection.
Expect mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Santa Barbara in September?
- In September, Santa Barbara averages 21°C, 8 mm of rain, and about 26 days with 6+ hours of sunshine. Its climate-comfort score is 9.1/10.
- Is September a good time to visit Santa Barbara?
- September earns a 9.1/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Santa Barbara in September?
- Expect about 8 mm of rain in September. Average humidity is 62% and there are about 26 days with 6+ hours of sunshine.
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