October in San Diego: Weather, What to Pack, and What to See

San Diego in October

TripSavvy / Chloe Giroux

October is nearly picture-perfect in San Diego. The weather is just the beginning, with clear skies and moderate temperatures. In the tourism off season, you can enjoy all the sights without elbowing your way through the crowds.

Halloween and Dia de Los Muertos in San Diego

Celebrating Dia de Los Muertos in San Diego Old Town
 Julie Thurston/Getty Images

If you are in San Diego in October, you can celebrate Halloween Sea World San Diego. You can wear a costume, go trick-or-treating, enjoy silly spooky shows, boogie on their interactive dance floor and get your photo taken with some wacky characters.

The San Diego Zoo and other tourist spots may also have Halloween parties.

Also in October, you can honor your lost loved ones and culturally immerse yourself in traditional and authentic Mexican Dia de Los Muertos. (Day of the Dead) celebrations throughout San Diego.

San Diego Weather in October

Good weather winds down in October, but you'll still have warm days with little chance of rain.

  • Average High Temperature: 73 F (23 C)
  • Average Low Temperature: 61 F (16 C)
  • Water Temperature: 65 F (18 C)
  • Rain: 0.57 in (1.5 cm)
  • Sunshine: 68 percent

If you want to compare these weather conditions to what San Diego is like the rest of the year, you can find that all in one place in the guide to typical San Diego weather. You can also explore the season in the guide to San Diego in the Fall.

The weather information we've given above is best used as a general idea of what things may be like. The only rain all summer could fall on your perfect picnic, or a winter day could be so warm you'll wish you packed your shorts.

Averages are helpful for planning ahead, but don't count on your trip being "average." Check the San Diego weather forecast before you leave home.

What to Pack

Pack a mid-weight jacket, especially for the evening near the water. Bring short-sleeved shirts and lightweight pants, with a sweater for layering. Bring shorts, but they may stay in the suitcase.

If you’re going to the beach, you may want to wiggle those ten fine toes in the sand. But getting that sand off your feet and out of everything else you own can be hard. To make it easier, pack a little bit of baby powder or cornstarch to put into your day pack. Sprinkle it on your skin, and the sand will brush off much easier.

San Diego Events in October

Adams Avenue Festival, San Diego
Bengt Nyman/Flickr/CC BY 2.0
  • Fleet Week San DiegoHeld annually in September and October, this celebration of San Diego's military servicemen and women includes concerts, parades, and a big air show.
  • Adams Avenue Street Fair: Get a local feel at Southern California's largest free two-day music festival, held the last weekend in September. You'll find six music stages, beer gardens and beer tastings, giant carnival rides, festival foods and lots of arts and crafts booths.

Things to Do in October

teen girls going surfing, low tide, late afternoon
Stephen Simpson / Getty Images

Humphreys by the Bay ConcertsA fun outdoor summer concert series held on Shelter Island from June through October.

You won't find much to make you think it's autumn in San Diego, but up in the little town of Julian, it's apple harvest time.

San Diego's best surf season is August through November. June through October is the tuna sport-fishing season.

The annual events listed above happen every year, but they're not all that's going on in San Diego in October. If you're looking for a fun concert, sporting event, or theatrical performance, try these resources:

October Travel Tips