Here's the best time of year to visit San Diego, plus other helpful things to know from a long-time local

• If you're planning a trip to San Diego, be aware of COVID-19 and weather-related advisories.
• Keep reading for important details as you prepare to explore San Diego, California.

Though it's always a good time to visit San Diego, there are a few key times of the year, and local regulations to consider, which may impact your trip. As a local resident for the past 25 years, I'm clued in to the latest regulations regarding the pandemic and know first-hand when you'll experience the best weather and fewest crowds. Keep reading for my tips to help plan a seamless trip to San Diego.

What to know about COVID-19

San Diego follows standard US/CDC guidelines for COVID-19. If you're traveling here (or anywhere in the United States) internationally, you will need to be tested within 24 hours before your flight and show proof of a negative result before boarding. You can find all requirements here.

For the most up-to-date information on local mask mandates, restrictions, and testing/vaccine sites, the San Diego County COVID-19 website has everything you need to know.

The best time to visit San Diego

We do have a "rainy season" that runs from about November through March. Even then, the rain is usually light, and we welcome it because San Diego, like most of California, is in moderate drought status.

While our air temperature is mild most of the year, the Pacific Ocean is not, averaging temperatures in the 50s and low 60s Fahrenheit. You'll find obsessed surfers catching waves even in the middle of winter, but swimming is best left for the summer months when the water temperature reaches 68 or 69 degrees.

Know that if you come in late spring, you may experience what locals call "May gray" or "June gloom." That's when a marine layer is caused by the differences in ocean water and air temperatures, resulting in overcast skies along the coast. The sun may not be shining, but, as I've discovered the hard way, you still need to wear sunscreen.

View Insider's comprehensive guide to visiting San Diego.