Quick answer:
Google confirmed the September 2026 spam update finished rolling out on 8 October after nearly two weeks, so before and after comparisons in your Search Console data are now worth making.Key Takeaways
- Google's Search Status Dashboard records the September 2026 spam update as complete on 8 October 2026, after 13 days and 15 hours.
- The rollout used almost all of the two week window Google announced, while the March, June and August spam updates each finished within three days.
- The September update also ran longer than both of this year's core updates, which took about 12 days each.
- Google called it a normal spam update and has not named any tactic or spam policy it targeted.
- Compare the week of 17 to 23 September with the days from 9 October onwards in Search Console before drawing any conclusion.
- Google says a site hit by a spam update can improve after fixing the problem, but its systems take months to recognise the fix.
Google's September 2026 spam update finished rolling out on 8 October, 13 days and 15 hours after it began. The three earlier spam updates this year each finished within three days.
Rankings move around while a spam update rolls out, so anything you saw in your data over the past two weeks could still have changed. The numbers in Search Console are now stable enough to read.
We covered the announcement when the rollout began and advised recording a baseline. That baseline is now ready to use.
What Google announced
The completion note on Google's Search Status Dashboard is one line:
"The rollout was complete as of October 8, 2026."
The original announcement on 24 September read:
"Released the September 2026 spam update, which applies globally and to all languages. The rollout may take up to two weeks to complete."
Google called it "a normal spam update" in a LinkedIn post on launch day and has published nothing since about what it targets. Until Google says more, any claim about a specific target is speculation.
The longest spam update of the year
Google gave this rollout up to two weeks and used almost all of it. It ran longer than the March and May core updates, which took about 12 days each.
Google has not said why this rollout needed more time.
| Spam update | Start date (Pacific time) | Window Google announced | Time the rollout took |
|---|---|---|---|
| March 2026 | 24 March | A few days | 19 hours 30 minutes |
| June 2026 | 24 June | A few days | 2 days 1 hour |
| August 2026 | 18 August | A few days | 2 days 16 hours |
| September 2026 | 24 September | Up to two weeks | 13 days 15 hours |
What a spam update changes
Google's automated spam detection runs all the time, and a spam update is a notable improvement to how it works. Google's documentation names SpamBrain, which it calls "our AI-based spam-prevention system".
A spam update is not a manual penalty. No one at Google reviewed your site, and there is no message in Search Console to look for.
A site can drop without its owner knowing which rule it broke. To find out, read Google's spam policies and check your pages against each one.
The rollout came in waves
Search Engine Roundtable's Barry Schwartz tracked the volatility through the whole window and reports three separate waves. The first wave ran over the launch weekend of 25 to 27 September, which he called a big weekend impact.
Rank volatility then cooled before a second wave on 30 September. Glenn Gabe reported site owners emailing him about large drops landing on that exact day.
A third wave hit 4 to 6 October, which Schwartz read as the final phase before completion. After the rollout finished, he noted some SEOs felt an impact closer to a core update than a typical spam update.
How to read your own data
Open the Performance report in Search Console and compare the week of 17 to 23 September with the days from 9 October onwards. Leave the rollout days out of the comparison, because rankings were still moving then.
Once a full week of post rollout data exists, compare whole weeks, so weekday and weekend patterns do not distort the result. Start with the pages that bring you the most clicks.
Then work out the scope of any change. A drop across every page group points at the whole site, while a drop on one folder or template points at those pages.
Check which queries moved as well as which pages. A page that kept its clicks for some searches and lost them for others tells you more than a single total.
If your numbers are flat, this update did not affect your site. Nothing needs changing.
If your rankings dropped
Google's spam updates page tells affected sites where to start:
"Sites that see a change after a spam update should review our spam policies to ensure they are complying with those."
The same page sets the timeline for recovery:
"Making changes may help a site improve if our automated systems learn over a period of months that the site complies with our spam policies."
For example, a site that removes thousands of generated pages this month may wait several months before its rankings reflect the cleanup. Keep the fixes in place while you wait.
Our article on the August spam update covers how to check whether your pages repeat one template, which is the pattern Google's scaled content abuse policy describes.
The bottom line
A steady Search Console graph means no action is needed. A drop inside the rollout window means reading Google's spam policies against your own pages before changing anything.
Our SEO services include technical SEO audits, content strategy and SEO copywriting, and monthly reports on rankings, traffic and conversions. Our work as a GEO agency includes answer-first content and monthly tracking of your visibility across major AI platforms.
An SEO consultant can tell you whether your drop lines up with the update window or has another cause. Send us your Search Console data, and as a Singapore SEO firm we will tell you what changed and what to do next.
