Catalina Island Weather Outlook
Avalon, CA forecast
Catalina Island has a gentle subtropical climate, with comfortable warmth throughout the year. In the winter season, Catalina Island typically sees average highs of 63 and average lows of 50 degrees Fahrenheit. During summer, the average high temperature on Catalina Island stays near 72, while the average low is 65 degrees Fahrenheit.
On average, Catalina Island gets 12 inches of rain annually, and January is usually the rainiest month.
Year-round conditions in Avalon, CA
Catalina Island offers inviting weather in every season, with blue skies and clear ocean waters. Island attire is casual. Bring a light jacket or sweater for cooler nights, since temperatures drop after sunset. A sweater or lightweight jacket can also be useful for winter boat trips. For hiking, pack sturdy sneakers or hiking boots. And be sure to bring a swimsuit. In August, the ocean averages about 73 degrees, which makes it the warmest ocean water off the coast of California.
Average highs and lows in Fahrenheit
| Month | High | Low | |---|---:|---:| | Jan | 63° | 50° | | Feb | 63° | 51° | | Mar | 63° | 52° | | Apr | 64° | 55° | | May | 66° | 58° | | Jun | 68° | 61° | | Jul | 71° | 64° | | Aug | 73° | 65° | | Sep | 72° | 64° | | Oct | 70° | 60° | | Nov | 67° | 54° | | Dec | 63° | 49° |
Average ocean water temperature around Catalina Island
Including Avalon and Two Harbors:
- Summer (June-August): 70-75 degrees F
- Fall (Sept – Nov): 65-70 degrees F
- Winter (Dec. – Feb.): 59-65 degrees F
- Spring (March-May): 65-70 degrees F