Google December 2025 Core Update (11 December 2025): What Changed and How to Recover

The Google December 2025 core update was a broad core update that started on 11 December 2025 and finished on 29 December 2025, the third core update of the year. Because it ran straight through the holiday shopping peak, the hardest part for most site owners is separating a genuine ranking change from normal December seasonality before deciding what to fix.

Below I set out what Google confirmed, the dates to compare in your data, and a recovery plan for pages that lost ground. You can also browse my full list of Google algorithm updates for earlier and later changes.

Detail	Information
Update name	Google December 2025 core update
Type	Broad core update
Rollout started	11 December 2025
Rollout finished	29 December 2025
Rollout length	18 days 2 hours (estimate was up to 3 weeks)
Confirmed by Google	Yes, on the Search Status Dashboard and LinkedIn
Official source	Google Search Status Dashboard

What the December 2025 core update changed

Google announced it on the dashboard with: “Released the December 2025 core update. The rollout may take up to 3 weeks to complete.” On LinkedIn it added: “This is a regular update designed to better surface relevant, satisfying content for searchers from all types of sites.”

There was no new update-specific guidance. That matters, because it tells you this was not a targeted change against one practice. A core update reassesses how Google’s ranking systems judge relevance and quality across the whole index, so some pages rise and others fall without any of them having a technical fault.

Two pieces of context help explain why it felt significant:

• A five-month gap. It arrived after five months without a core update, the previous one being June 2025. Longer gaps often mean more accumulated change when the next one lands.
• Third of 2025. It closed the year, so for many sites it set the baseline they carried into 2026.

Timeline

Date	What happened
June 2025	Previous broad core update
11 December 2025	December 2025 core update released; Google estimated up to 3 weeks
13 December 2025	First reported volatility (industry observation)
20 December 2025	Another reported spike (industry observation)
29 December 2025	Rollout complete after 18 days 2 hours

One Search Engine Land article gives the start as 12 December. The dashboard records and Search Engine Land’s own launch article say 11 December, which I use here. The difference may simply reflect time zones.

Who was affected

Google named no site types. Industry trackers reported initial movement around 13 December and a second spike around 20 December, overlapping the busiest online shopping period of the year.

That overlap is the key issue for ecommerce, gifting, travel and events sites. A store selling gifts might see impressions rise in mid December and fall sharply after Christmas every year. A B2B software site might see a normal holiday slump in the last two weeks of December. Neither pattern on its own tells you anything about the core update.

How to tell if the December 2025 core update hit your site

For this update I lean on year-on-year comparisons more than usual, because the before-and-after windows sit across very different weeks of the calendar.

1. Compare against last December, not last month. In Search Console, compare 11 to 29 December 2025 with the same dates in 2024. Then compare January 2026 with January 2025. If the gap opens only in 2025, seasonality is not the explanation.
2. Watch average position, not just clicks. Clicks fall when demand falls. Average position for your core queries falling at the same time is the stronger sign of a ranking change.
3. Use the standard window as a second check. Compare the two weeks before 11 December with the two weeks after 29 December. On its own this can mislead, but alongside the year-on-year view it confirms the direction.
4. Find where losses cluster. Filter by page and group pages by type: category pages, product pages, buying guides, blog posts. Core updates often move one type of page, such as thin category pages or affiliate-style guides, more than others.
5. Check who replaced you. Search your top lost queries. If forums, manufacturer sites or larger retailers now rank above you, that tells you what kind of answer Google now prefers.
6. Rule out tracking and site changes. Many sites ship holiday banners, pop-ups and theme changes in December. Check none of them broke rendering, internal links or structured data.

How to recover from the December 2025 core update

Google’s position is that there is no specific fix for a core update, and that a ranking drop does not necessarily mean a page has a problem. What it does recommend is assessing affected pages against its self-assessment questions on helpful, reliable, people-first content and making broad, lasting improvements.

1. Pick the pages that matter. Start with the pages that lost the most clicks for queries that drive revenue or leads, not every page that moved.
2. Compare against the pages that won. Look at what the new top results do better: more complete answers, first-hand testing, clearer pricing and specifications, original photos, real authorship.
3. Answer Google’s self-assessment questions honestly. Does the page offer original information or analysis? Would someone bookmark it or share it? Is it written by someone with obvious expertise? Does it fully satisfy the search?
4. Strengthen E-E-A-T where it is thin. Add real author bios, show your experience with the products or service, explain policies such as returns and delivery clearly, and make it easy to see who runs the business.
5. Consolidate overlapping pages. Several weak pages targeting the same intent, for example five gift guides for similar budgets, usually do better merged into one strong page.
6. Fix intent mismatches. If Google now shows product listings for a query where you have a long blog post, or the reverse, adjust the page type rather than the wording.
7. Wait for the next core update to judge results. Recovery most often shows at a later core update, though some movement in between is possible as systems refresh.

For online shops, my ecommerce SEO work usually focuses on category page depth and product content, which is where seasonal stores tend to be thinnest. Page-level rewrites are covered in my on-page optimisation service.

Is it still relevant today?

Yes, but it is no longer the latest word. Google has since run the March 2026 and May 2026 core updates. If you lost traffic in December 2025 and have already made genuine improvements, your data from after those later updates is a better guide to whether the changes worked. If you are still at December levels after two more core updates, the improvements probably have not gone deep enough, and it is worth reassessing the page types that lost most.

Frequently asked questions

When did the December 2025 core update finish?

Google marked it complete on 29 December 2025. It started on 11 December 2025, so the rollout took 18 days and 2 hours.

Was my December traffic drop the core update or just the holidays?

Compare the same dates year on year and look at average position for your main queries. If positions fell and the gap versus last year widened, the update is the likely cause. If positions held and only clicks fell, it was probably demand.

Did Google give any new advice for the December 2025 core update?

No. Google described it as a regular update to surface relevant, satisfying content from all types of sites, and pointed to its existing core update guidance.

Can I recover before the next core update?

Sometimes. Google says some movement between core updates is possible as systems refresh, but most recoveries show at a later core update.

Sources

• Google Search Status Dashboard
• Search Engine Land: rollout complete
• Search Engine Land: core update library
• Keywords Everywhere

If your traffic dropped around the December 2025 core update and you cannot tell how much is seasonality, I can separate the two for you. My SEO audit looks at affected pages one type at a time and sets out what to improve first. Request a free audit to get started.