December Social Media Holidays 2025

For social media managers, December is the final sprint. It’s a month of extreme highs; record-breaking sales traffic and heartwarming community engagement. All balanced against the chaos of holiday PTO and year-end reporting.

How do you keep client feeds active and engaging while you (hopefully) take some well-deserved time off?

The secret is locking in your December social media holidays early. By blending high-impact sales dates with lighter, engagement-focused holidays, you can schedule your content in advance and finish 2025 strong.

This guide provides the essential dates and actionable ideas you need for your December 2025 content calendar.

Key High-Impact December Social Media Holidays

These dates are the "big rocks" of your calendar—critical for driving Q4 revenue, nurturing community, and celebrating the season.

December 1 - Cyber Monday

While Black Friday gets the glory, Cyber Monday is often the king of conversion. Your content here must be urgent and click-driven.

• Content Idea: Use "Last Chance" messaging. Create a carousel post showcasing the top 5 items that are about to sell out. For B2B, offer a "Digital Deal" on software or consultations.
• Actionable Tip: Don't just post once. Schedule a morning announcement, a midday reminder, and a "final hours" warning to catch different time zones.
• Relevant Hashtags: #CyberMonday #CyberMondayDeals #LastChanceSale

December 2 - Giving Tuesday

After the consumer rush of Black Friday and Cyber Monday, this day is about community and philanthropy.

• Content Idea: Shift the spotlight away from your products. Highlight a charity partner, announce a donation match, or showcase your team volunteering.
• Actionable Tip: If you can’t donate money, donate value. Offer a free guide, consultation, or resource and pledge to help a specific number of people.
• Relevant Hashtags: #GivingTuesday #Charity #CommunityFirst

December 14 - Hanukkah Begins

The Festival of Lights creates an opportunity for inclusive, warm storytelling over eight nights.

• Content Idea: Share a simple, elegant graphic wishing your community a Happy Hanukkah. If relevant to the brand, share a story about "light" or "perseverance."
• Posting Tip: Be mindful of stereotypes. Stick to authentic, warm wishes unless the brand has a specific cultural connection to the holiday.
• Relevant Hashtags: #Hanukkah #FestivalOfLights #HappyHanukkah

December 25 - Christmas Day

By today, the selling should be over. Focus purely on brand affinity and relationship building.

• Content Idea: A simple, high-quality "From Our Family to Yours" graphic or a pre-recorded video from the CEO/Founder thanking customers for a great year.
• Actionable Tip: Do not post manually today. Use your social media scheduling tool to ensure this post goes live while you are enjoying time with family.
• Relevant Hashtags: #MerryChristmas #HappyHolidays #SeasonsGreetings

December 31 - New Year’s Eve

The perfect moment for engagement and looking forward.

• Content Idea: "2025 Year in Review." Share a Reel or carousel of your top 3 wins, best-selling products, or funniest moments from the year. Ask your audience for their one big goal for 2026.
• Relevant Hashtags: #NYE2025 #NewYearNewGoals #YearInReview #Hello2026

Unique December Social Media Post Ideas for Engagement

Between the major holidays, keep your engagement high and your feed fun with these creative prompts.

December 4 - National Cookie Day

A universal crowd-pleaser that works for almost any industry.

• Content Idea: Run a poll: "Chewy or Crispy?" or "Chocolate Chip vs. Oatmeal Raisin?" It’s low-stakes, high-engagement controversy.
• Relevant Hashtags: #NationalCookieDay #SweetTreats #CookieDebate

December 19 - Ugly Christmas Sweater Day

This is a staple for showcasing company culture.

• Content Idea: Have a team "Ugly Sweater" contest and ask your followers to vote for the winner in the comments. If you are a solo entrepreneur, post a selfie in your worst knitwear.
• Relevant Hashtags: #UglyChristmasSweater #UglySweaterDay #OfficeFun

December 21 - Winter Solstice

The shortest day of the year is great for content about "coziness," "comfort," or "winter essentials."

• Content Idea: A flat-lay photo of winter essentials (coffee, warm socks, a laptop). Ask followers how they are spending the longest night of the year.
• Relevant Hashtags: #WinterSolstice #FirstDayOfWinter #CozyVibes

Measuring and Managing Your December Campaigns

The biggest challenge in December isn't ideas—it's execution. With team members taking PTO and clients sending last-minute requests, your workflow needs to be bulletproof.

1. Batch & Schedule Early

Do not wait until December 15th to plan your Christmas content. Aim to have all holiday posts scheduled by the first week of the month. This ensures you can relax knowing your accounts are active.

2. Automate Approvals

Use a tool with an external approval workflow. Send your batch of holiday content to clients in late November so you aren't chasing approvals on Christmas Eve.

3. Analyze the "Year-End" Spike

December often brings a spike in traffic. Set up your reporting now so that in January, you can easily see which holiday campaign drove the most ROI. Did the "Ugly Sweater" engagement post lead to new followers? Did the Cyber Monday urgency drive clicks?

Ready to automate your holiday rush? Start a free trial of our Social Media Content Management Tool today.

Full List of December 2025 Social Media Holidays & Observations

December 1

• Cyber Monday
• World AIDS Day
• Rosa Parks Day

December 2

• Giving Tuesday
• National Mutt Day

December 4

• National Cookie Day
• World Wildlife Conservation Day

December 5

• International Ninja Day
• World Soil Day

December 6

• St. Nicholas Day
• National Bartender Day

December 7

• National Cotton Candy Day
• Pearl Harbor Remembrance Day

December 8

• National Brownie Day

December 9

• National Pastry Day

December 10

• Human Rights Day
• Nobel Prize Day

December 11

• International Mountain Day

December 12

• Gingerbread House Day
• Poinsettia Day

December 14

• Hanukkah Begins (Sundown)
• National Bouillabaisse Day

December 15

• National Cupcake Day
• Bill of Rights Day

December 17

• National Maple Syrup Day

December 18

• Bake Cookies Day

December 19

• Ugly Christmas Sweater Day

December 21

• First Day of Winter (Winter Solstice)
• Crossword Puzzle Day

December 23

• Festivus

December 24

• Christmas Eve
• National Eggnog Day

December 25

• Christmas Day

December 26

• Kwanzaa Begins
• Boxing Day (UK/Canada)

December 31

• New Year’s Eve
• National Champagne Day