Costa Mesa Boo Ha Ha. Haunted Oktoberfest

October 25, 2025, 5 p.m.-12 a.m. (Midnight)

Orange County Fairgrounds, Action Sports Arena
88 Fair Dr.
Costa Mesa, CA
$65-110, ocfair.com

• Unlimited tastings from top breweries
• Dead Man's Demolition Derby
• Live music
• Costume contest

 Brew Ha Ha Productions and OC Fair & Event Center produce this event

Seasonal Adventures Pumpkin Patch

October 2-31, 2025 at Orange County Fairgrounds. Inflatable slides, kiddie rides, a petting zoo and a train. Location: 88 Fair Drive, Costa Mesa, CA. Free admission; $12 parking Fri-Sun, ocfair.com

 Monday-Thursday  4-9 p.m.
Friday  4-10 p.m.
Saturday, 11 a.m.-10 p.m.
Sunday, 11 a.m.-9 p.m. Closing at 7 p.m. on Oct. 31

OC Fair & Event Center Lot C
88 Fair Drive
Costa Mesa, CA
Free, ocfair.com
Parking is free Monday -Thursday and $12 Friday-Sunday.

Seasonal Adventures Pumpkin Patch Family-fun pumpkin patch features inflatable slides, kiddie rides, a petting zoo and a train.

Pick out your perfect pumpkin or shop the farmers market for farm fresh squash and gourds. No pets allowed. 

Trunk or Treat

October 25, 2025, 3-7 p.m.

IKEA Parking Lot
1475 S Coast Drive
Costa Mesa, CA
Free, powerofonefoundation.org/boo

• Treat Zone
• Trick Zone
• Costume Contest at 6 p.m.
• Haunt Zone
• Dance Zone
• Snack Zone

 Power of One Foundation, in partnership with IKEA - Costa Mesa, City of Costa Mesa, and City of Santa Ana, invites you to celebrate Halloween at their annual Trunk or Treat at the IKEA parking lot. From 3 - 7 p.m., attendees can visit decorated trunks in the Treat Zone, participate in multiple activities in the Trick Zone, and test their nerves in the Haunt Zone. Food trucks will be onsite for food purchase.

Scarecrow Festival

October 11, 2025, 2-6 p.m.

Lions Park
1845 Park Ave.
Costa Mesa, CA
Free, costamesaca.gov

Costa Mesa Barktoberfest

October 18, 2025, 11 a.m.-2 p.m.  

Costa Mesa Bark Park - Tewinkle Park
970 Arlington Dr.
Costa Mesa, CA
Free, costamesaca.gov or (714) 754-4918

Canine Costume Contest, Vendors, Pet adoptions, K-9 Unit, Pet Costume Parade, Food Trucks, Training Introductory Class and a howling good time.

Events are not guaranteed. It is your responsibility to confirm before going.