Current sea water temperature:
+63.1°F
| Minimum sea water temperature in December: | 64.2°F |
| Maximum sea water temperature in December: | 58.6°F |
| Average sea water temperature in December: | 60.8°F |
| more information | |
14 days
forecast
forecast
| Santa Catalina Island |
monthly
weather
weather
| Santa Catalina Island |
Sea water temperature for the last 10 days:
| December 4 | 63.1°F | November 29 | 63.7°F |
| December 3 | 63.0°F | November 28 | 63.5°F |
| December 2 | 63.1°F | November 27 | 63.7°F |
| December 1 | 63.3°F | November 26 | 63.5°F |
| November 30 | 63.5°F | November 25 | 63.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Santa Catalina Island?
Based on the data about daily sea water temperature for the last three years the warmest sea in Santa Catalina Island was noticed in August, September and July.
Monthly Sea Temperatures in Santa Catalina Island, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 69.7°F. The highest and lowest sea temperatures during the month were 71.8°F and 68.2°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 70.6°F. The highest and lowest sea temperatures during the month were 72.0°F and 69.1°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 68.0°F. The highest and lowest sea temperatures during the month were 69.1°F and 65.3°F.
current
weather
weather
| Santa Catalina Island |
weather in
December
December
| Santa Catalina Island |
Best time for vacation in Santa Catalina Island
Santa Catalina Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Santa Catalina Island
Local time: 20:09
December 04, thursday
2100
54°F
SE
14 mph
14 mph
December 05, friday
0000
52°F
SE
13 mph
13 mph
0300
52°F
SE
12 mph
12 mph
0600
59°F
SE
9 mph
9 mph
0900
59°F
E
6 mph
6 mph
1200
63°F
E
6 mph
6 mph
1500
64°F
E
6 mph
6 mph
1800
64°F
E
6 mph
6 mph
