Published: October 3, 2026 · Last updated: October 3, 2026
TL;DR: Google’s September 2026 spam update is taking roughly two weeks to roll out, far longer than the one-to-three-day rollouts of its last three updates this year, and Google isn’t explaining why.
Google’s spam updates this year have mostly behaved like a quick storm: in, done, gone within a few days. The September 2026 one is behaving more like weather that just won’t move on.
Google released the September 2026 spam update on September 24, posting the news simultaneously on its ranking release history page, on LinkedIn, and on X through its Google Search Central account. All three posts used nearly identical language, describing it as “a normal spam update” rolling out globally, across all languages, with a note that the rollout “may take up to two weeks to complete.” Two weeks turned out to be an undersell of how unusual the timeline would look next to the rest of 2026’s updates. The March 2026 spam update took one day. June’s took two. August’s took three. September’s is the fourth spam update of the year, and it’s taking roughly seven times longer than the one before it.
“Yes, it’s likely to take longer than some of the previous ones,” John Mueller of Google confirmed on Bluesky, when asked whether the extended timeline was a mistake.
Google hasn’t explained what’s different about this update’s scope or mechanics that would justify the slower rollout, and the company has a history of not disclosing that kind of detail regardless of how long an update takes. Search Engine Roundtable’s Barry Schwartz, who has tracked every spam and core update Google has shipped for years, reported that Google wouldn’t say what percentage of search queries the update is actually affecting, which is the same non-answer Google gives after essentially every update of this kind.
A second phase of the same update reportedly landed on September 30, six days after the initial rollout began, adding another wrinkle to a timeline that was already longer than usual. Whether that second phase is a planned part of the original rollout or a separate adjustment made mid-update isn’t clear from Google’s public statements, and the company’s standard spam update documentation only says that automated spam-detection systems, built around what Google calls SpamBrain, are “constantly operating” with periodic “notable improvements” bundled into named updates like this one.
For site owners whose rankings move during this window, the practical guidance from Google hasn’t changed even though the timeline has: review the search spam policies, fix whatever’s actually in violation, and expect recovery, if a site qualifies for it at all, to take many months rather than the next refresh cycle. That advice was cold comfort during a three-day update. It’s considerably colder when the update itself is still rolling out two weeks after it started, meaning some sites might not even know yet whether they’ve been hit by the full effect.
Ranking volatility tends to spike during long rollouts like this one regardless of whether a given site is actually a spam target, simply because Google’s systems are reprocessing a huge volume of pages over an extended window instead of all at once. That makes the next several weeks a noisy period to draw conclusions from analytics data, whether a site’s traffic goes up, down, or stays flat.
Related: Google Is Paying Some Publishers for AI Overviews, and Most Are Getting Pennies and Google Just Told Website Owners: Fact-Check Your AI Content or Else.
Bottom Line: A spam update taking seven times longer than its predecessor isn’t a glitch Google needs to explain away, but it is a signal that something about how this one works is different, and site owners watching their rankings swing for two straight weeks deserve more than “it’s normal” as an answer.
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