Temperature in Santa Catalina Island in September

Daytime highs, nighttime lows and the warmest cities in Santa Catalina Island, the United States of America this September.

Santa Catalina Island, the United States of America, a region in the United States of America, typically experiences warm weather in September, with maximum daytime temperatures around 25°C (77°F) and nighttime temperatures around 17°C (63°F) in Avalon. On average, September is the month with the highest temperature of the year in Santa Catalina Island, the United States of America.

What is the temperature of the different cities in Santa Catalina Island, the United States of America in September?

Explore the map below to discover average September temperatures at the top destinations in Santa Catalina Island. For a deeper dive, simply click on any destination dot.

Select a Month

Check the conditions for any month of the year.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

For a detailed overview over the year and the best time to visit Santa Catalina Island, check out our Santa Catalina Island's climate page.

See also: Santa Catalina Island weather by month.

Best Places to Visit in Santa Catalina Island in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Santa Catalina Island.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

See all September weather averages, cities and regions in Santa Catalina Island

Santa Catalina Island temperatures in September: frequently asked questions

How hot does it get in Santa Catalina Island, the United States of America in September?

Expect daytime temperatures around 25°C (77°F) in Avalon. That makes September a high month for Santa Catalina Island, the United States of America.

How cold does it get at night in Santa Catalina Island, the United States of America in September?

Average overnight lows in Santa Catalina Island, the United States of America during September sit near 17°C (63°F) in Avalon.

How much sun does Santa Catalina Island, the United States of America get in September?

The weather is predominantly sunny, with an estimated total of around 278 hours of sunshine in Avalon. This means many sunny days, which creates a cheerful atmosphere during this month.

Interested in more climate information?

We have much more information about the climate in Santa Catalina Island.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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