San Diego is one of the most relaxed and rewarding cities to visit in the country — blessed with near-perfect weather, world-class family attractions, miles of beaches, and an easygoing Southern California pace. The sights are spread across distinct areas (downtown and the bay, Balboa Park, the beaches, La Jolla, Coronado), so a little planning by geography goes a long way. Three days covers the highlights; four or five lets you add the beaches and breathe.
When to come. San Diego's mild, sunny climate makes almost any time good. Late spring through early fall is warmest and busiest; summer brings the most crowds (and "May Gray" / "June Gloom," a coastal morning overcast that usually burns off). Fall is arguably ideal — warm, clear, and quieter. Winters are mild and pleasant, with the bonus of gray-whale migration season offshore. Whenever you come, evenings can be cool near the coast, so pack a layer.
Where to stay. Base yourself by what you most want to do. Downtown and the Gaslamp Quarter (Pendry, The US Grant, Manchester Grand Hyatt) are central for the waterfront, nightlife, and dining. Coronado (Hotel del Coronado) is a relaxed beach-resort base across the bay. La Jolla (La Valencia, The Grande Colonial) is the scenic coastal choice. Mission Bay (Paradise Point) is a calm, family-friendly resort area near SeaWorld and the beaches. Match the base to your priorities to minimize driving.
Getting around. A car gives the most flexibility for a spread-out region, though downtown, the Gaslamp, and the Embarcadero are walkable, and the trolley connects some areas (downtown, Old Town, the convention center). Rideshares work well for shorter hops. Group activities by area each day, and factor in that the freeways get busy at rush hour.
The essentials. Tour the USS Midway aircraft carrier on the waterfront. Spend time at Balboa Park and its world-famous zoo. Get out to the coast — La Jolla Cove for the sea lions and scenery, and Coronado for its top-ranked beach and historic hotel. Add a marine attraction (SeaWorld, or LEGOLAND for younger kids) and a harbor cruise or whale watch. And eat — San Diego's Baja-influenced Mexican food and craft beer are highlights.
A sample three days. Day one: the waterfront — the USS Midway, Maritime Museum, and a harbor cruise — then the Gaslamp Quarter for dinner. Day two: Balboa Park and the San Diego Zoo (a full day), or split with a museum. Day three: the coast — La Jolla Cove and Birch Aquarium in the morning, Coronado Beach and the "Del" in the afternoon. Add a fourth day for SeaWorld, LEGOLAND, Old Town, or a whale watch.
