San Diego in September
Average Temperature: 26°C
Traveling to San Diego in September is a pretty sweet deal if you're looking for a warm getaway that’s not overwhelmingly hot. The city tends to enjoy a nice, mellow vibe this time of year. The summer crowds start to thin out a bit, so you can explore popular spots like Balboa Park, the San Diego Zoo, and the Gaslamp Quarter without feeling too cramped. The beaches are still inviting, perfect for lounging or catching some waves, and the ocean water is generally pleasant for swimming. Plus, with the sunny days and cool evenings, it’s great for outdoor dining and evening strolls along the waterfront.
One thing to keep in mind is that September can sometimes bring a marine layer or coastal fog in the mornings, especially near the beach, but it usually burns off by midday, revealing clear skies. It’s a good idea to bring layers so you’re comfortable whether you’re out at the beach or exploring the city streets. Events-wise, there’s often something happening, from local food festivals to outdoor concerts, so you might catch a fun community vibe. Overall, San Diego in September offers a balanced mix of warm weather, manageable crowds, and plenty of activities without the summer rush.
Average Monthly Temperatures
Cost Index
San Diego is generally considered a moderately expensive city for travelers. Accommodation prices tend to be higher than average, especially in popular areas near the beach and downtown. Dining costs can also add up, with a range of mid to high-priced restaurants. Attractions and entertainment often come with moderate to high fees, though there are also plenty of free or low-cost activities like beaches and parks. Transportation costs are manageable but not cheap, with some dependence on car rentals or ride-sharing. Overall, the blend of relatively high lodging and dining costs with moderate transportation and activity expenses places San Diego in the $$$ cost index category.
Location
San Diego is located at coordinates 32.72° latitude, -117.16° longitude.
Weather Summary
September is hot in San Diego with average temperatures of 26°C.