Measurements:
°C
°F
Santa Catalina Island
68°F
N 4 mph
Feels like: 68°F
Precip: 21%
World Resorts USA Santa Catalina Island Weather August Weather in Santa Catalina Island

Santa Catalina Island Weather: August

Average Day Temperature: 78.7°F
Average Night Temperature: 70.4°F
Sea Water Temperature: 73.3°F
Number of Sunny Days: 23 days
Sunshine Hours: 12.9 - 13.8 hours
Number of Rainy Days: 0 days
Precipitation Totals: 0.1 in

Air Temperature in August, °F

Select Year: 2026 2025 2024

The highest day temperature in August 2026 was 101°F. The lowest night temperature was 59°F. The average values for day and night temperatures during August were 83.1°F и 67.3°F respectivly.

Santa Catalina Island Water Sea Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Santa Catalina Island was 76.4°F. The maximum and minimum values were 74.8°F and 79.2°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in August are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in August, in

Precipitation total in August for Santa Catalina Island is 0.1 in.

Wind Speed in August, mph

The average wind speed in August is 6.6 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Santa Catalina Island in August is 10.6 hours.

Best Time to Visit Santa Catalina Island
The most sunny months:
July 23 days
August 23 days
September 21 days
The most warm months:
August 78.7 °F
September 77.4 °F
July 76.0 °F
Warmest sea temperature:
August 73.3 °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

Santa Catalina Island on the Weather Map

USA Resorts:
NAME
Boston +62
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +72
Maui +66
Miami +88
Myrtle Beach +78
New York +66
Panama City Beach +90
San Diego +70
San Francisco +60
Santa Monica +72
Sarasota +86
Washington +66
24 Hours Weather Forecast
Santa Catalina Island
Local time: 06:42
15 sep, tuesday
0900 68°F
N
7 mph
1200 68°F
N
7 mph
1500 68°F
N
8 mph
1800 68°F
NE
6 mph
2100 66°F
NE
5 mph
16 sep, wednesday
0000 66°F
N
4 mph
0300 66°F
N
7 mph
0600 66°F
N
5 mph