May is a strong month to visit San Diego: mild weather, the Carlsbad Flower Fields in bloom, and a run of food and music festivals before summer crowds arrive. The catch is “May Gray,” the coastal cloud layer that burns off by midday.
Events
- Carlsbad Flower Fields: about 50 acres of ranunculus in bloom, roughly March through early May.
- Gator by the Bay: a Cajun music and food festival, usually early May.
- Cinco de Mayo: Old Town San Diego’s celebration with music, dance, and food.
- SeaWorld festivals: the Seven Seas Food Festival and Viva La Musica concert series run spring into May.
- Julian Wildflower Show: the Julian Woman’s Club show, typically May.
- Memorial Day weekend: parades and ceremonies to close the month.
Weather
Daytime highs average around 69°F and lows around 59°F. “May Gray” brings low coastal clouds in the morning that usually clear to sun by afternoon; inland areas (East County, the desert) run warmer and clearer. Pack a layer for mornings and evenings on the coast. Microclimates are real here, so the beach and Escondido can differ by 15 degrees.
Beaches and the rest
The ocean is still cool in May (low to mid 60s°F), fine for a quick swim but wetsuit territory for surfing. Sunsets are clear and the beaches, Mission, Pacific, and La Jolla, are uncrowded compared with summer. Tide pools at Cabrillo and La Jolla Cove, the boardwalks, and fire-pit beaches are the easy wins. Balboa Park, the Zoo, and the USS Midway round out non-beach days.
Food and drink
May’s food calendar is busy: Old Town’s Cinco de Mayo, the SeaWorld Seven Seas Food Festival, Reader Tacotopia, the Ramona Tacos and Beer Fest, and the SDCVA Wine & Food Festival at Bernardo Winery. It is a good month for a taco-and-craft-beer tour or a winery afternoon.
Takeaway
May is a sweet spot: blooming Flower Fields, festivals, and mild weather, with lighter crowds than summer. Plan around May Gray (morning clouds, clear afternoons), book lodging ahead since it is still peak season adjacent, and bring a layer. Check exact 2026 event dates before you go, since festival weekends shift year to year.
