Fewer crowds, golden sunsets, and mild temps make autumn ideal on the Central Coast. Average highs hover in the low–mid 70s °F in September and around 72 °F in October, with cool, comfortable evenings—great for beach walks and patio dining. It’s also prime season for ocean adventures at Channel Islands National Park: early fall often brings warmer water (up to ~70°F) and excellent visibility for kayaking, snorkeling, and diving.