29.09
tue
tue
Day
68°F
NE 6 mph
Precip.
5%
5%
Night
66°F
N 5 mph
Precip.
8%
8%
30.09
wed
wed
Day
68°F
NW 7 mph
Precip.
9%
9%
Night
66°F
NW 4 mph
Precip.
10%
10%
01.10
thu
thu
Day
68°F
E 3 mph
Precip.
7%
7%
Night
68°F
E 4 mph
Precip.
9%
9%
02.10
fri
fri
Day
77°F
E 9 mph
Precip.
8%
8%
Night
77°F
E 12 mph
Precip.
7%
7%
03.10
sat
sat
Day
79°F
SE 6 mph
Precip.
4%
4%
Night
77°F
E 12 mph
Precip.
7%
7%
04.10
sun
sun
Day
81°F
SE 6 mph
Precip.
5%
5%
Night
77°F
E 9 mph
Precip.
8%
8%
05.10
mon
mon
Day
81°F
N 6 mph
Precip.
5%
5%
Night
77°F
NW 6 mph
Precip.
9%
9%
sea water
temperature
temperature
| Santa Catalina Island |
monthly
weather
weather
| Santa Catalina Island |
current
weather
weather
| Santa Catalina Island |
14 days
forecast
forecast
| Santa Catalina Island |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 73.3°F. The highest and lowest sea temperatures during the month were 75.2°F and 72.0°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 68.0°F. The highest and lowest sea temperatures during the month were 70.0°F and 66.2°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
Santa Catalina Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Santa Catalina Island
Local time: 21:12
September 30, wednesday
0000
66°F
N
5 mph
5 mph
0300
68°F
NW
7 mph
7 mph
0600
66°F
NW
7 mph
7 mph
0900
68°F
NW
10 mph
10 mph
1200
68°F
NW
7 mph
7 mph
1500
68°F
NE
7 mph
7 mph
1800
68°F
NE
6 mph
6 mph
2100
66°F
N
5 mph
5 mph
