Measurements:
°C
°F
CURRENT WEATHER
14:30
Santa Catalina Island
76°F
E 9 mph
Feels like: 80°F
Precip: 7%
World Resorts USA Santa Catalina Island Weather

7 Day Weather Forecast

08.25
tue
DAY
86°F
NE 3 mph
precip
15%
NIGHT
80°F
NE 6 mph
precip
8%
08.26
wed
DAY
82°F
NW 4 mph
precip
7%
NIGHT
78°F
W 6 mph
precip
10%
08.27
thu
DAY
74°F
N 4 mph
precip
44%
NIGHT
78°F
NW 4 mph
precip
23%
08.28
fri
DAY
80°F
E 4 mph
precip
19%
NIGHT
78°F
E 8 mph
precip
11%
08.29
sat
DAY
72°F
E 7 mph
precip
7%
NIGHT
70°F
NE 6 mph
precip
8%
08.30
sun
DAY
72°F
SE 6 mph
precip
8%
NIGHT
68°F
N 6 mph
precip
8%
08.31
mon
DAY
70°F
N 5 mph
precip
6%
NIGHT
70°F
NE 2 mph
precip
21%

Santa Catalina Island Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Santa Catalina Island was 23.0°F. The maximum and minimum values were 22.4°F and 23.6°F respectively.

Santa Catalina Island on the Weather Map

Best Time to Visit Santa Catalina Island
The most sunny months:
August 24 days
July 23 days
September 21 days
The most warm months:
August 77.9 °F
September 77.4 °F
July 76.0 °F
Warmest sea temperature:
August 73.2 °F
September 72.6 °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
more details