Measurements:
°C
°F
CURRENT WEATHER
17:27
Santa Catalina Island
82°F
E 16 mph
Feels like: 88°F
Precip: 9%
World Resorts USA Santa Catalina Island Weather

7 Day Weather Forecast

10.05
mon
DAY
82°F
E 9 mph
precip
9%
NIGHT
82°F
E 11 mph
precip
8%
10.06
tue
DAY
82°F
SE 6 mph
precip
8%
NIGHT
78°F
NE 10 mph
precip
10%
10.07
wed
DAY
78°F
NE 6 mph
precip
8%
NIGHT
74°F
NE 2 mph
precip
9%
10.08
thu
DAY
76°F
E 4 mph
precip
7%
NIGHT
72°F
E 2 mph
precip
8%
10.09
fri
DAY
72°F
E 6 mph
precip
7%
NIGHT
72°F
E 9 mph
precip
10%
10.10
sat
DAY
72°F
E 8 mph
precip
17%
NIGHT
70°F
E 11 mph
precip
7%
10.11
sun
DAY
68°F
NE 8 mph
precip
9%
NIGHT
66°F
E 14 mph
precip
4%

Santa Catalina Island Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Santa Catalina Island was 20.0°F. The maximum and minimum values were 19.0°F and 21.1°F respectively.

Santa Catalina Island on the Weather Map

Best Time to Visit Santa Catalina Island
The most sunny months:
July 23 days
August 23 days
October 21 days
The most warm months:
August 78.7 °F
September 76.9 °F
July 76.0 °F
Warmest sea temperature:
August 73.3 °F
September 73.1 °F
July 70.8 °F
The most cold months:
December 63.2 °F
January 63.7 °F
March 63.9 °F
The most rainy months:
January 2 days
December 2 days
February 1 day
The most windy months:
March 8 mph
February 7 mph
April 7 mph
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