E.g., 02/20/2019

Catalina Island Weather Forecast

Catalina Island weather a mild subtropical climate with warm year-round temperatures. During winter months, average high temperature is 63 and the average low temperature is 50 degrees F. During summer months, average high temperature hovers around 72 and the average low temperature is 65 degrees F.

Catalina receives an average of 12 inches of precipitation a year, over 45 days, with January being the wettest month.

The upcoming week's Catalina Island, CA weather forecast:

You can enjoy beautiful weather year-round on Catalina Island. Blue skies and crystal clear waters await you. The dress code for the Island is “island casual.” A light sweater or jacket is recommended for cool evenings, as it gets chilly once the sun goes down. You may also appreciate a sweater or light jacket if you venture out on a boat during winter months. If you want to do any hiking, you may want to bring a good pair of sneakers or hiking boots. Don’t forget your swimsuit! The average ocean temperature hovers around 70 degrees in August, making it the warmest ocean water off the coast of California.

Average highs & lows:


Average Ocean Water Temperature

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