Things to Do in San Diego in October
Summer crowds gone, hotel prices down 30–40%, weather still perfect — October is San Diego’s best-kept secret
October in San Diego is what locals call “Second Summer.” The June Gloom marine layer that blankets mornings in early summer is completely gone. Temperatures average 72–75°F with clear skies from sunrise to sunset. The ocean stays warm enough to swim (68–70°F), hotel prices drop 30–40% from peak summer rates, and the city runs its biggest family program of the year — Kids Free San Diego — at over 100 venues.
Whether you’re visiting with kids, as a couple, or solo, October offers the best combination of weather, value, and crowd levels of any month. Here’s how to make the most of it.
Kids Free San Diego — October’s Biggest Deal for Families
100+ venues. Free kids admission. All month long.
Every October, the San Diego Tourism Authority runs Kids Free San Diego — a city-wide program where museums, theme parks, restaurants, and hotels offer free or deeply discounted admission for children. The exact venue list changes each year, but past participants have included:
San Diego Zoo
Normal: $60/child (3–11)
Up to 6 kids free per paid adult ($70)
SeaWorld San Diego
Normal: $70+/child
Free child ticket with adult purchase
LEGOLAND California
Normal: $104/child
Discounted or BOGO child tickets
Birch Aquarium
Normal: $22/child
Free child admission with paid adult
USS Midway Museum
Normal: $21–26/child
Free child with adult ticket ($31–36)
17 Balboa Park Museums
Normal: $12–20/child
Free kids entry at participating museums
Participation varies by year. Confirm current venues through the San Diego Tourism Authority before planning around specific attractions.
Strategy: Schedule your most expensive attractions first — admission at top venues runs $40–80 per child, so a family of four can save $200+ across a week. Many venues also offer hotel-stay packages with bundled Kids Free perks. See our full guide to things to do with kids in San Diego.
October Weather in San Diego
October delivers what locals call “Second Summer” — warm, dry, and clear. The marine layer that defines June and July mornings is gone, meaning consistent sunshine from 7am to 6pm.
| Metric | October Average | vs. July |
|---|---|---|
| Daytime high | 72–75°F (22–24°C) | 3–5°F cooler |
| Nighttime low | 58–62°F (14–17°C) | Similar |
| Ocean temperature | 68–70°F | 1–2°F cooler |
| Rain days | 1–2 days avg | Both dry |
| Sunshine hours | ~9 hours/day | 1 hour less |
| Crowds | Moderate | 40–50% fewer |
| Hotel prices | $160–240/night downtown | 30–40% less |
Pack a light jacket for evenings — temperatures drop after dark. Daytime is T-shirt weather. Sunscreen is still necessary despite the cooler feel. October is the best month for coastal hiking as summer heat has eased.
Halloween Events in San Diego
San Diego takes Halloween seriously — theme parks, neighborhoods, and venues across the city run events throughout October.
SeaWorld Howl-O-Scream
Separately ticketed
After-hours Halloween event at SeaWorld with haunted houses, scare zones, themed food and drinks, and live entertainment. In 2026, runs select nights September 11 through October 31, 7pm until park close (entry from 6pm). Separately ticketed from regular SeaWorld admission — not included with a day pass. Single-night tickets start around $37; save 40% buying online. Annual passholders get up to 60% off.
When: Select nights Sept 11 – Oct 31, 2026 (7pm–close)
Tickets: From ~$37/person; 4-packs from $31/person
Age: Best for ages 13+
LEGOLAND Brick-or-Treat
Included with admission
Kid-friendly Halloween event at LEGOLAND California in Carlsbad. Trick-or-treating through themed trails, seasonal LEGO builds, costumed characters, and a fireworks show on select nights. Included with regular park admission — no extra ticket needed. Not scary at all. Costumes encouraged.
2026 dates: Oct 3–4, 10–11, 17–18, 24–25, 31 + Nov 1
Cost: Included with park admission
Best for: Families with kids ages 3–12
Balboa Park Halloween Family Night
Free / Low cost
Several Balboa Park museums run Halloween-themed programming throughout October — family nights with costumes, special exhibits, and trick-or-treating. The San Diego Natural History Museum and Fleet Science Center typically host the biggest events. The park’s gardens and walkways make for a festive evening stroll even without specific events.
Neighborhood Trick-or-Treating
Free
On October 31, North Park’s 30th Street corridor and Hillcrest’s residential blocks are the city’s most active trick-or-treating zones. Homes and businesses go all out with decorations and full-size candy bars. South Park and Normal Heights also run strong Halloween scenes. Arrive by 5:30pm for peak candy distribution.
Other October Events Worth Planning Around
MCAS Miramar Air Show (Late Sept)
If you arrive late September, catch the Miramar Air Show (September 25–27, 2026) — one of the largest military air shows in the US. The Blue Angels headline, plus F-35B demos, aerial acrobatics, and static aircraft displays. ~700,000 attendees across the weekend. Free general admission and parking at MCAS Miramar. Arrive early to beat traffic.
2026 dates: September 25–27
Cost: Free general admission and parking
Julian Apple Harvest
The mountain town of Julian (1hr 15min northeast of downtown) peaks for apple season in September–October. Fresh-baked pies at Mom’s Pies and Julian Pie Company, apple cider from the orchards, and fall foliage along the mountain roads. U-pick apple farms are open weekends. Combine with a wine tasting at Volcan Mountain Winery on the drive back.
Drive: ~1hr 15min from downtown via I-8 E to Hwy 79
Best for: Day trip, couples, families
Día de los Muertos Celebrations
San Diego’s large Mexican-American community celebrates Día de los Muertos with events across the city in late October through early November. Old Town hosts altars, live music, and face painting. Barrio Logan’s Chicano Park holds one of the largest community celebrations. Sherman Heights runs an annual community altar display. The festivals are free, vibrant, and unlike anything else in the city.
Where: Old Town, Barrio Logan, Sherman Heights
When: Late October through November 2
Padres Postseason (If Qualifying)
If the Padres qualify for the MLB playoffs, home games at Petco Park run through October. The Gaslamp Quarter around the stadium transforms during playoff games — restaurants extend patios, bars show the game on outdoor screens, and the energy is electric. Even without tickets, the surrounding blocks are worth visiting on game nights.
8 Best Activities in San Diego in October
October’s cooler temperatures and thinner crowds make these activities better than they are in peak summer.
Balboa Park Museums
$15–25/museum
Lower crowds than summer and comfortable walking temperatures. Many museums rotate free Tuesdays for San Diego residents. October Kids Free adds free child admission at participating venues.
La Jolla Cove Snorkeling
Free (rentals $25–30)
Water stays warm at 68–70°F — clear enough for snorkeling without a wetsuit. Sea lions active, summer crowds gone. Morning visits before 9am are the clearest.
Torrey Pines Hike
$15–25 parking
Fall light, comfortable temperatures, and reduced trail traffic make October the best hiking month. Guy Fleming Trail for views, Beeler Trail for beach access.
Whale Watching
$45–65/person
Humpback whales remain visible off San Diego through October. Gray whale migration picks up in November. Departures from the Embarcadero with several operators — morning trips have calmer seas.
Coronado Beach Day
Free
Still warm enough to swim, dramatically less crowded than summer. The best combination of conditions for a beach day in San Diego. Pair with the Coronado Ferry ($6.50 each way) from downtown.
San Diego Zoo
$70/adult, $60/child
Animals are more active in cooler October mornings than in summer heat. During Kids Free October, up to 6 children (3–11) get free admission per paid adult — that’s up to $360 in savings for a large family. Weekday mornings are the least crowded window.
Craft Brewery Tour
$10–20/flight
North Park and Miramar brewery districts run year-round. October adds harvest ales, pumpkin beers, and seasonal releases. Patio weather is ideal — not too hot, no rain.
Julian Apple Picking
Free entry + purchases
Peak apple harvest. Drive 75 minutes to Julian for fresh pies, cider, u-pick orchards, and fall mountain colors. Best day trip from San Diego in October.
October Planning Checklist
Hotels
Book 4–6 weeks ahead. October has grown in popularity — downtown mid-range hotels run $160–240/night vs $300–400+ in July. That’s 30–40% savings.
Kids Free
Up to 6 children (ages 3–11) free per paid adult at 60+ museums and attractions. Confirm venues at the San Diego Museum Council site — the roster changes annually. The 2026 Museum FUN GUIDE publishes September 1.
Packing
T-shirts and shorts for daytime, light jacket for evenings. Sunscreen still necessary. Bring a swimsuit — the ocean is warm.
Crowds
40–50% fewer visitors than summer. Weekday mornings are virtually empty at most attractions. Book weekend activities in advance.
Parking
Torrey Pines lot fills by 9–10am on weekends even in October. La Jolla street parking easier than summer but still tight midday.
Day trips
Julian for apple harvest, Anza-Borrego for wildflowers (if early rains), Temecula wine country with fall temperatures.