Measurements:
°C
°F
CURRENT WEATHER
12:18
Santa Catalina Island
72°F
E 8 mph
Feels like: 72°F
Precip: 25%
World Resorts USA Santa Catalina Island Weather

7 Day Weather Forecast

08.05
wed
DAY
72°F
E 8 mph
precip
25%
NIGHT
68°F
E 5 mph
precip
9%
08.06
thu
DAY
68°F
NE 6 mph
precip
11%
NIGHT
68°F
E 4 mph
precip
11%
08.07
fri
DAY
68°F
NE 6 mph
precip
10%
NIGHT
70°F
E 5 mph
precip
10%
08.08
sat
DAY
70°F
E 8 mph
precip
9%
NIGHT
70°F
E 6 mph
precip
9%
08.09
sun
DAY
70°F
NE 6 mph
precip
9%
NIGHT
70°F
N 5 mph
precip
9%
08.10
mon
DAY
70°F
N 8 mph
precip
9%
NIGHT
70°F
NW 4 mph
precip
8%
08.11
tue
DAY
72°F
N 8 mph
precip
9%
NIGHT
70°F
N 5 mph
precip
9%

Santa Catalina Island Sea Water Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Santa Catalina Island was 20.9°F. The maximum and minimum values were 20.1°F and 22.1°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 72.7 °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
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