World Resorts USA Santa Catalina Island Weather

Santa Catalina Island weather in September

Weather in Santa Catalina Island: September

Average day temperature: 75.9°F
Average night temperature: 68.8°F
Sea water temperature: 70.3°F
Number of sunny days: 24 days
Day length: 11.9 - 12.8 hours
Number of rainy days: 0 days
Precipitation totals: 0.1 in.

Air temperature in September, °F

Show year:
2024
2023
2022

The highest day temperature during September of 2024 was 75°F. At the same time the lowest night temperature was 60°F. Day and night temperature averages during September were 66.4°F and 67.0°F.

Sea water temperature in Santa Catalina Island in September, °F

Show year:
2024
2023
2022

The average sea water temperature in September of 2024 was 69.2°F. The highest and lowest sea temperatures during the month were 72.0°F and 66.7°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are sunny but cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Santa Catalina Island in September is 0.1 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 6.7 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 9.9.

Best time for vacation in Santa Catalina Island

Sunniest months:
August 29 days
July 28 days
September 24 days
Warmest months:
August 76.5 °F
September 75.9 °F
July 74.9 °F
Warmest sea temp:
August 70.6 °F
September 70.3 °F
July 68.7 °F
Coldest months:
March 62.0 °F
January 63.2 °F
December 63.2 °F
Rainiest months:
December 3 days
January 2 days
February 1 day
Windiest months:
March 8.3 mph
April 7.5 mph
May 7.5 mph

Santa Catalina Island on a weather map

Santa Catalina Island
+59°F
E 6 mph
Feels like: +59°F
Precip.: 0%
Places in USA:
Name
°F
+19°F
+30°F
+73°F
+73°F
+48°F
+54°F
+66°F
+25°F
+59°F
+54°F
+54°F
+57°F
+54°F
+45°F
+27°F
24 Hours Forecast
Santa Catalina Island
Local time: 08:19
December 22, sunday
0900
59°F
E
6 mph
1200
55°F
SE
3 mph
1500
55°F
E
6 mph
1800
59°F
E
7 mph
2100
63°F
E
9 mph
December 23, monday
0000
59°F
E
5 mph
0300
59°F
E
2 mph
0600
59°F
W
1 mph
Units of measurement: °C / °F