Google's September spam update took almost 14 days, the longest of 2026

Google has finished rolling out its September 2026 spam update. Its Search Status Dashboard says the rollout was complete as of 8 October 2026. It started on 24 September, so it ran for 13 days and 16 hours.

That is the longest spam update of the year. Search Engine Journal reports the March update took 19 hours and 30 minutes, June took 2 days and 1 hour, and August took 2 days and 16 hours. When Google launched the September update, it said the rollout "may take up to two weeks to complete." It applied globally and to all languages.

Google's documentation describes a spam update as an improvement to its automated spam detection systems. As of Search Engine Journal's report, Google had not said what this update targeted or why it took longer than the others.

Why it matters

A long rollout makes traffic changes hard to read. Rankings can move for days before they settle, so a dip on 26 September may not mean the same as a dip on 7 October. Now the update is finished, the numbers are stable enough to judge.

The missing explanation matters too. Google has not named a target, so any claim about "what the update hit" is a guess, including ones from tools and consultants. Treat those with care until Google says more.

For brands that now get visitors from AI search, spam updates carry a second risk. Pages that lose organic visibility can also lose the citations that AI answers draw from web results. If your organic traffic fell, check your AI mentions as well.

What to do this week

• Compare the right windows. Set Search Console to 24 September to 8 October and compare it with the 14 days before. Do not judge from single days.
• Split by page type. Group pages into templates, such as blog posts, product pages and location pages, and see which group moved.
• Look for patterns you control. Review thin pages, scaled content, expired domains and third-party content on your site. Fix what you find. Do not delete pages in a panic.
• Wait before big changes. If you see a drop, make targeted fixes and give them a few weeks. Rewriting a whole site on the back of one report rarely helps.
• Check your AI visibility. See whether ChatGPT and Gemini still mention and cite your brand for your key questions. Aiso can track this over time.
• Watch your conversion path. If traffic is down, make sure the visitors you still get turn into leads. A website chat agent such as Javo can capture questions and contact details from them.

Google may share more about this update in its next ranking updates. We will cover it if it does.