Santa Catalina Island, located off the coast of Southern California, experiences a Mediterranean climate. During July, the island typically enjoys warm, dry weather with sunshine dominating the days. Average high temperatures range from the low to mid-70sF (low 20sC), while overnight lows dip to the mid-60sF (high teensC). Ocean temperatures hover around the low 70sF (low 20sC), making it pleasant for water activities.
This period represents peak tourist season for Catalina Island. The agreeable climate makes July ideal for various outdoor pursuits, including swimming, snorkeling, diving, hiking, and boating. Historically, the island has been a popular summer destination, attracting visitors seeking respite from hotter inland temperatures. The predictable weather patterns contribute significantly to the local economy, supporting tourism-related businesses and fostering a vibrant summer atmosphere.