Measurements:
°C
°F
CURRENT WEATHER
11:30
Santa Catalina Island
90°F
N 4 mph
Feels like: 96°F
Precip: 4%
World Resorts USA Santa Catalina Island Weather

7 Day Weather Forecast

07.15
wed
DAY
90°F
N 4 mph
precip
4%
NIGHT
70°F
N 6 mph
precip
10%
07.16
thu
DAY
68°F
NW 9 mph
precip
10%
NIGHT
66°F
NW 9 mph
precip
14%
07.17
fri
DAY
66°F
NW 13 mph
precip
13%
NIGHT
66°F
NW 11 mph
precip
14%
07.18
sat
DAY
66°F
N 9 mph
precip
12%
NIGHT
66°F
NW 6 mph
precip
13%
07.19
sun
DAY
66°F
NE 5 mph
precip
10%
NIGHT
66°F
E 7 mph
precip
14%
07.20
mon
DAY
66°F
E 8 mph
precip
9%
NIGHT
66°F
E 9 mph
precip
10%
07.21
tue
DAY
66°F
E 5 mph
precip
9%
NIGHT
66°F
NE 5 mph
precip
23%

Santa Catalina Island Sea Water Temperature in July, °F

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Santa Catalina Island was 20.0°F. The maximum and minimum values were 19.3°F and 21.0°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 75.9 °F
Warmest sea temperature:
August 72.7 °F
September 72.6 °F
July 70.7 °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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