World Resorts USA Santa Catalina Island Weather

Santa Catalina Island 14 Days Forecast

07.09
mon
Day
81°F
SE 9 mph
Precip.
14%
Night
77°F
E 13 mph
Precip.
8%
08.09
tue
Day
79°F
E 12 mph
Precip.
18%
Night
79°F
E 9 mph
Precip.
7%
09.09
wed
Day
82°F
NE 5 mph
Precip.
3%
Night
72°F
NE 4 mph
Precip.
8%
10.09
thu
Day
79°F
NW 3 mph
Precip.
6%
Night
70°F
NW 4 mph
Precip.
9%
11.09
fri
Day
70°F
NW 6 mph
Precip.
9%
Night
66°F
NE 5 mph
Precip.
9%
12.09
sat
Day
68°F
NW 4 mph
Precip.
10%
Night
66°F
N 6 mph
Precip.
8%
13.09
sun
Day
66°F
N 5 mph
Precip.
9%
Night
66°F
NE 6 mph
Precip.
7%
14.09
mon
Day
66°F
N 6 mph
Precip.
8%
Night
68°F
NW 5 mph
Precip.
8%
15.09
tue
Day
68°F
N 5 mph
Precip.
8%
Night
68°F
N 3 mph
Precip.
8%
16.09
wed
Day
70°F
E 6 mph
Precip.
6%
Night
68°F
NE 2 mph
Precip.
10%
17.09
thu
Day
70°F
E 3 mph
Precip.
6%
Night
70°F
E 6 mph
Precip.
22%
18.09
fri
Day
70°F
NE 6 mph
Precip.
6%
Night
68°F
NE 5 mph
Precip.
9%
19.09
sat
Day
68°F
NE 7 mph
Precip.
8%
Night
66°F
NE 2 mph
Precip.
8%
20.09
sun
Day
66°F
NE 6 mph
Precip.
16%
Night
66°F
E 11 mph
Precip.
8%

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 70.6°F. The highest and lowest sea temperatures during the month were 72.0°F and 69.1°F.

Air temperature in Santa Catalina Island, °F

Precipitation total in Santa Catalina Island, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Santa Catalina Island

Sunniest months:
July 23 days
August 23 days
September 21 days
Warmest months:
August 75.8 °F
September 74.6 °F
July 73.4 °F
Warmest sea temp:
August 70.9 °F
September 70.4 °F
July 68.7 °F
Coldest months:
December 61.9 °F
January 62.3 °F
March 62.5 °F
Rainiest months:
January 2 days
December 2 days
February 1 day
Windiest months:
March 8.5 mph
February 7.8 mph
April 7.7 mph

Santa Catalina Island on a weather map

Current weather
16:01
Santa Catalina Island
+84°F
E 14 mph
Feels like: +84°F
Precip.: 10%
Places in USA:
Name
°F
Boston
+79°F
Washington
+86°F
Hawaii
+79°F
Las Vegas
+102°F
Los Angeles
+95°F
Miami
+82°F
Maui
+68°F
Myrtle Beach
+84°F
New York
+82°F
San Diego
+79°F
San Francisco
+81°F
Santa Monica
+91°F
Sarasota
+84°F
Houston
+95°F
Chicago
+77°F
all places
24 Hours Forecast
Santa Catalina Island
Local time: 16:01
September 07, monday
1800
81°F
E
12 mph
2100
75°F
SE
14 mph
September 08, tuesday
0000
77°F
E
13 mph
0300
77°F
SE
11 mph
0600
77°F
SE
11 mph
0900
77°F
SE
9 mph
1200
79°F
E
12 mph
1500
77°F
E
14 mph
Units of measurement: °C / °F