The best time to visit Cardiff-By-The-Sea is during late spring and early autumn, specifically from May to June and September to October, when the weather is consistently pleasant and the crowds are smaller.During these months, you'll experience clear skies and comfortable temperatures, great for enjoying the beaches and outdoor activities without the peak summer crowds. The "June Gloom" and "May Gray" phenomena, common in coastal Southern California, are typically less impactful in late spring, allowing for more sunshine.For those looking to enjoy surfing or other water sports, the ocean temperatures are warmer in September and October, making for a more enjoyable experience.