Google September 2026 Spam Update: What to Check Now

Google's September 2026 spam update is in its final phase after a rollout of up to two weeks. Here is what changed, who is at risk and what to do next.

Google started rolling out its September 2026 spam update on 24 September, and the last phase appears to have hit between 4 and 6 October. If your organic traffic jumped around over the past two weeks, this is the likely reason.

Google said it applies globally, to all languages, and that it could take up to two weeks. That is much longer than the August 2026 spam update, which took two days. Here is what we know, who should be worried and what to do before the dust settles.

What Google has confirmed

Google announced the update on 24 September at about 12:00 pm ET. According to Search Engine Roundtable's write-up, the Search Status Dashboard entry reads: "Released the September 2026 spam update, which applies globally and to all languages." The same entry says the rollout "may take up to two weeks to complete."

Google called it a normal spam update. It targets sites that break its spam policies, and the guidance for anyone who sees a change is to review those policies and make sure the site complies. Google also said recovery can take many months, and that there will be periodic refreshes. John Mueller said this one was likely to take longer than some earlier updates.

One more detail matters for planning: Google warned the update may cause collateral damage. Not every site that drops did something wrong.

How the rollout has played out

Tracking tools and forum reports showed the update arriving in waves rather than all at once. Search Engine Roundtable's timeline describes it like this:

• 24 September: the update begins.
• 25 to 27 September: the first wave, with the biggest early swings.
• 30 September: activity picks up again after a quieter few days.
• 4 to 6 October: a third wave, which the author believes is the final phase.

Nobody has confirmed completion yet. Google said it will update its ranking release history page when the rollout finishes, so that is the page to watch. Until it does, treat any ranking data from the past two weeks as unsettled.

Why Google keeps releasing spam updates

At Google Search Central Live in Barcelona, Google's team explained the pace. A recap relayed by Search Engine Roundtable says there is far more new content online than before, a high share of it is spam, and Google is using AI to catch more of it.

The same recap says Gary Illyes warned that scaled content is becoming a bigger problem than link spam. The advice from the event was blunt: expect more spam updates, and watch for scaled, low-effort content.

That fits what Google changed in its documentation. On 1 October it updated its guide to using generative AI content with information from the Search Quality Rater Guidelines. The guide does not ban AI-assisted content. The risk is publishing large volumes of pages with no real value for the reader.

Who is most at risk

Google has not published a list of affected site types, so be careful with anyone who claims to know exactly who was hit. Based on the signals above, these are the situations worth checking first:

• Sites that published many pages quickly with little editing, whether written by AI or by a content farm.
• Pages built to catch search queries rather than answer them, such as near-duplicate location or product pages.
• Publishers relying on Discover traffic, where low-quality content is reportedly increasing.
• Sites with any history of breaking Google's spam policies, including link schemes or expired-domain tactics.

Forum reports have been mixed. Some site owners reported sharp drops, one news publisher described a big fall in earnings, and another person said Discover traffic was picking up again. Mixed reports are normal in the middle of a long rollout.

Keep one caveat in mind when reading volatility charts. The tools Search Engine Roundtable showed did not all update on the same days, and the article gave no numeric volatility readings. Use the charts to see when things moved, then rely on your own Search Console data to see what moved on your site. A drop that lines up with 25 September or 4 October is worth investigating. A drop that started weeks earlier probably has another cause, such as a seasonal dip, a site change or an earlier update.

It also helps to write down what you changed on the site in the last three months: new templates, bulk imports, plugin changes, a migration. When traffic moves, that list shortens the hunt for a cause considerably.

What to do this week

1. Wait for the rollout to be declared finished before judging results. Compare traffic from before 24 September with traffic after Google confirms completion, not with the midpoint.
2. Pull Search Console data by page, not just by site. Look at clicks and impressions for the weeks around 25 September, 30 September and 4 October. Find the specific page groups that moved.
3. Audit thin and scaled pages. List every template-driven or bulk-produced page. Ask whether a real person with real needs would find it useful. Merge, rewrite or remove the ones that fail.
4. Check your link profile for anything you paid for or traded. Google said this update does not focus on link spam, but old problems still count under its policies.
5. Do not make sweeping changes in a panic. Google warned of collateral damage. If a page is good and your traffic fell, document it and wait for the next data point.
6. Read the current spam policies line by line against your site. The official guidance is the only reliable checklist.

If you were hit

Google has been clear that recovery can take months. That means the work starts with fixing the cause, not waiting for a reversal. Start with a full digital marketing audit to separate genuine spam signals from ordinary ranking movement, then handle the technical side with technical SEO work such as removing duplicate pages and cleaning up indexing.

On the content side, quality beats volume. A smaller set of useful pages written by someone who knows the subject will serve you better than hundreds of thin ones. If you need help raising the standard, our content marketing and blog writing teams work with in-house marketers on exactly this.

Key takeaways

• The September 2026 spam update began on 24 September, applies to all languages and locations, and may have reached its final phase on 4 to 6 October.
• Google called it a normal spam update aimed at sites that break its spam policies, with possible collateral damage.
• Google's team expects more spam updates, and scaled, low-effort content is the main concern.
• Do not judge results until Google marks the rollout as complete. Then compare page groups in Search Console.
• If you were hit, fix the underlying content and policy issues. Recovery can take months.

If you saw a drop and are not sure whether this update was the cause, we are happy to take a look. You can get a free quote and we will tell you plainly what we find.

Sources

• Google September 2026 Spam Update (Search Engine Roundtable)
• Google September 2026 Spam Update Phase Three Hit October 4 - 6 (Search Engine Roundtable)
• Google Search Spam Updates Use AI To Find AI Spam (Search Engine Roundtable)
• Google Search documentation updates