When people think of diving in California, they often assume it’s best in the summer months, when the sun is shining and the beaches are packed. However, what many divers don't realize is that the ocean temperatures are actually warmest in October and November—making fall the ideal time to dive off the California coast.

During these months, the water in Southern California can reach into the 70s, far more comfortable than the chilly temps earlier in the year. This is because the ocean takes all summer to warm up, and it retains that heat well into the fall. For divers, that means the best combination of warmer water and reduced crowds. As a bonus, visibility is often better during this time of year due to calmer seas, giving you clearer views of vibrant marine life.

Fall diving in California also offers a unique chance to witness the seasonal shift in ocean life. October and November are prime months to see migrating species such as giant sea bass and even occasional whales. Kelp forests are lush, providing an incredible backdrop for exploring with the warmth of the water.

So, if you’re planning your next dive, consider taking advantage of California’s hidden secret: fall’s warm waters. It’s the perfect time to enjoy the ocean, spot marine wildlife, and experience fewer divers in the water. Don’t let the cooler air temperatures fool you—beneath the surface, it’s as good as it gets.

Happy diving!