September weather forecast and climate
Santa Barbara, CA

Orange rooftops of the courthouse buildings of Santa Barbara in California, USA, Pacific Ocean
Orange rooftops of the courthouse buildings of Santa Barbara in California, USA, Pacific Ocean

What is the temperature in September in Santa Barbara?

The average high-temperature, in September, is 75°F (23.9°C), while the average low-temperature is 59.5°F (15.3°C).

How much does it rain in Santa Barbara in September?

In September, in Santa Barbara, the rain falls for 1.2 days. Throughout September, 0.3" (7mm) of precipitation is accumulated.
Average temperature in September - Santa Barbara, CA
  • Average high temperature in September: 75.1°F

The warmest month (with the highest average high temperature) is August (76°F).
Months with the lowest average high temperature are January and December (64.7°F).

  • Average low temperature in September: 59.6°F

Months with the highest average low temperature are July and August (60.4°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).

Average rainfall in September - Santa Barbara, CA
  • Average rainfall in September: 0.3"

The wettest month (with the highest rainfall) is January (3.8").
Driest months (with the lowest rainfall) are June, July and August (0.1").

Average rainfall days in September - Santa Barbara, CA
  • Average rainfall days in September: 1.2 days

Months with the highest number of rainy days are January and March (6.5 days).
The month with the lowest number of rainy days is July (0.4 days).

Average sea temperature in September - Santa Barbara, CA
  • Average sea temperature in September: 61.3°F

The best month for swimming (with the highest average sea temperature) is August (62.2°F).
The coldest month (with the lowest average sea temperature) is April (55.7°F).

Average daylight in September / Average sunshine in September - Santa Barbara, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 9h

The month with most sunshine is July (Average sunshine: 11h).
Months with least sunshine are January, November and December (Average sunshine: 6).

Average UV index in September - Santa Barbara, CA
  • Average UV index in September: 8

Months with the highest UV index are June and July (UV index 10).
Months with the lowest UV index are January and December (UV index 3).

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