Here’s a list of hashtags that are expected to be especially relevant or trending on TikTok in December 2025, based on current patterns and emerging trends:
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#december — A very seasonal, broad tag. TikTok For Business+1
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#christmas — Very likely to trend heavily in December. TikTok Hashtags
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#xmas — Same seasonal vibe. TikTok Hashtags
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#holidayvibes — (inferred seasonal tag)
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#winteraesthetic — Winter-themed visuals are big in December. TikTok Hashtags
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#fyp — Always trending, helps visibility. TikTok Hashtags
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#viral — Broad and powerful. WebFX
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#trending — For content that’s timely and in-the-moment. TikTok Hashtags
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#2025trends — Capturing annual trends into December. TikTok Hashtags
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#EcoTok2025 — Sustainability is still very relevant. nowdaystime.com
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#GlowUpGoals — Self improvement / personal growth. nowdaystime.com
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#GreatLockIn — A 2025 TikTok trend about setting goals till the end of the year. Marie Claire UK