Late December in Ventura County has a rhythm of its own. The pace slows, neighborhoods glow, and the days between Christmas and New Year’s feel less rushed and more intentional. It’s the perfect time to enjoy local traditions, discover new spots, and make plans close to home.

From Simi Valley to Thousand Oaks and nearby communities, this guide highlights the events, openings, and holiday experiences shaping December 2025.

Late December Events in Simi Valley

15th Annual New Year’s Eve Celebration at the Reagan Library

December 31, 2025

An elegant New Year’s Eve celebration at the Ronald Reagan Presidential Library & Museum featuring dinner, live music, after-hours museum access, and a midnight champagne toast beneath Air Force One.

https://www.reaganfoundation.org/events/new-year-s-eve-celebration-2025

Council on Aging New Year’s Celebration Dance

December 30, 2025

A longtime community tradition at the Simi Valley Senior Center with live music, dancing, dinner, and a welcoming social atmosphere.

https://www.simivalley.org/Home/Components/News/News/6991/

Cork & Batter Roadhouse New Year’s Eve Party

December 31, 2025

A high-energy New Year’s Eve celebration with DJs, dancing, and a midnight toast at one of Simi Valley’s newer nightlife spots.

https://joonbug.com/losangeles/newyearseve/cork-and-batter-roadhouse-restaurant-nye-event-simi-valley

New Year’s Eve Bash with Bad Habit at Harley’s Valley Bowl

December 31, 2025

A casual New Year’s Eve option featuring live rock music, bowling, and classic hits from the ’80s and ’90s.

https://www.harleysbowl.com/events/nye-bash-2026

Late December Events in Thousand Oaks

A Magical Cirque Christmas

December 29, 2025

A one-night holiday performance at the Fred Kavli Theatre combining acrobatics, comedy, and festive music for all ages.

https://bapacthousandoaks.com/show-details/a-magical-cirque-christmas1

Jason Love’s New Year’s Eve Comedy Bash

December 31, 2025

An early-evening comedy showcase featuring professional comedians, perfect for those who want to celebrate without a late night.

https://bapacthousandoaks.com/show-details/new-years-eve-comedy-bash1

Family New Year’s Eve Party at Dave & Buster’s

December 31, 2025

A family-friendly early celebration with arcade games, food, and a countdown before bedtime.

https://www.prekindle.com/event/82789-bring-the-family-and-ring-in-2026-early-at-dandb-thousand-oaks

Dave & Buster’s Eat. Play. Toast. Repeat. (21+)

December 31, 2025

An adults-only New Year’s Eve event with arcade play, food, drinks, and a midnight toast.

https://www.prekindle.com/event/45531-dave-and-busters-new-years-eve-celebration-eat-play-toast-repeat-thousand-oaks

New Year’s Eve at Tarantula Hill Brewing Co.

December 31, 2025

A laid-back, all-ages celebration featuring live music, craft beer, and a relaxed community atmosphere.

https://www.unation.com/event/tarantula-hill-new-years-eve-party-2025-2026-62755232/

New & Recently Opened Around Ventura County

Le Macaron French Pastries

A French pastry café now open at Janss Marketplace in Thousand Oaks, offering macarons, pastries, and desserts.

https://www.vcstar.com/

All Good Eats & Drinks

A healthy whole-food eatery now open on North Moorpark Road in Thousand Oaks.

https://www.conejovalleyguide.com/

Slice House by Tony Gemignani

An Italian-inspired pizza and steakhouse concept with a coffee tap room, now open in Thousand Oaks and other Ventura County locations.

https://www.vcstar.com/

KazuNori: The Original Hand Roll Bar

Opened December 17, 2025, at The Commons at Calabasas near Thousand Oaks, serving made-to-order sushi hand rolls.

https://www.conejovalleyguide.com/

Misfits Pilates

A new fitness studio now open in Simi Valley’s Wood Ranch Village Center.

https://www.simivalley.org/

Best Holiday Spots to Visit

Imaginarium Presents Atlantis

An immersive holiday light walk-through with millions of LED lights at Camarillo Premium Outlets, running through January 4, 2026.

https://www.imaginarium360.com/

Gemini & Waverly Holiday Lights

A neighborhood holiday light display in Camarillo with coordinated festive lighting through December 25.

https://www.carescollective.org/

An American Christmas at the Reagan Library

A seasonal exhibit featuring themed Christmas trees and holiday décor throughout the museum, open through January 4, 2026.

https://www.reaganlibrary.gov/

Simi 360 Christmas Lights Tour

A community-curated map highlighting standout residential Christmas light displays across Simi Valley, active through January 1, 2026.

https://www.reddit.com/

December in Ventura County offers something for every pace, from elegant New Year’s Eve celebrations to casual neighborhood traditions. Staying local doesn’t mean missing out. In many ways, it’s where the season feels most meaningful.

Save this guide, share it with friends, and enjoy the final days of 2025 close to home.