Google September 2026 Spam Update Rolling Out: What Causes Ranking Fluctuations
Google's September 2026 Spam Update: What SEOs Need to Know
If your rankings have been bouncing around lately, there is a confirmed reason. Google released its September 2026 spam update on 24 September, the fourth confirmed spam update of the year. It applies globally and to all languages.
What Google Has Said
Google described it as a normal spam update. It also said the rollout could take up to two weeks. Earlier spam updates this year were given windows of only a few days, so the longer estimate stands out. Reports note that the August 2026 update actually finished in about three days despite similar wording, so the real duration may be shorter.
Google has not said which spam policy or tactic the update targets. Search Engine Roundtable reports that Google ruled out link spam and that periodic refreshes of the update will follow.
2026 So Far
Google has confirmed a run of ranking updates this year:
| Update | Type |
|---|---|
| February 2026 | Discover core update |
| March 2026 | Spam update (completed in roughly 19.5 hours) |
| March 2026 | Core update |
| May 2026 | Core update (finished 2 June) |
| June 2026 | Spam update |
| August 2026 | Spam update |
| September 2026 | Spam update (24 September) |
By comparison, 2025 had only one spam update. Between updates, SEO tracking tools and forums have also reported repeated unconfirmed volatility through July and August, which Google never acknowledged.
Could a Core Update Follow?
Some SEO analysts note that no core update has run since the May update finished, a gap of over 100 days, and speculate that one may be due before the end of the year. That is speculation. Google has not announced anything, and past spam updates have not reliably predicted a core update.
What a Spam Update Does
Google says spam updates improve its automated systems for detecting content that breaks its spam policies. Sites that violate those policies can drop in rankings or stop ranking altogether. Google has also said these policies apply to generative answers in Search, such as AI Overviews and AI Mode.
What Site Owners Should Do
- Wait before reacting. Rankings can swing during a rollout, and early movement may reverse. Wait until Google marks the update complete.
- Check timing. Compare traffic changes in Search Console against 24 September onwards, not earlier dates.
- Audit against the spam policies. Review thin or auto-generated pages, scaled content with little original value, cloaking, doorway pages and deceptive practices.
- Fix real violations. Google says recovery from a spam update can take months, and fixes may not produce an immediate rebound.
- Don't over-correct. Changing a site heavily in response to an update that did not affect it can do harm.
Why It Matters
Search is changing fast, with AI answers taking a growing share of clicks. A string of spam updates suggests Google is investing heavily in quality control as AI-generated content floods the web. For publishers, the safest strategy remains original, useful content written for readers.
Check Google's Search Status Dashboard for the official start and end times and any later refreshes.