Current sea water temperature:
+64.4°F
| Minimum sea water temperature in May: | 68.5°F |
| Maximum sea water temperature in May: | 60.1°F |
| Average sea water temperature in May: | 62.9°F |
| more information | |
14 days
forecast
forecast
| Santa Catalina Island |
monthly
weather
weather
| Santa Catalina Island |
Sea water temperature for the last 10 days:
| May 17 | 64.4°F | May 12 | 64.0°F |
| May 16 | 63.9°F | May 11 | 63.1°F |
| May 15 | 63.7°F | May 10 | 62.6°F |
| May 14 | 64.4°F | May 9 | 63.0°F |
| May 13 | 64.0°F | May 8 | 62.8°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
May
May
| 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: 12:12
May 17, sunday
1500
61°F
E
8 mph
8 mph
1800
63°F
E
12 mph
12 mph
2100
55°F
NE
9 mph
9 mph
May 18, monday
0000
57°F
NW
9 mph
9 mph
0300
57°F
NW
16 mph
16 mph
0600
57°F
NW
14 mph
14 mph
0900
59°F
NW
14 mph
14 mph
1200
59°F
NW
10 mph
10 mph
