SEO News September 2026: Google Kept the Clicks and the Data

SEO news September 2026 at a glance: The only confirmed ranking event was the September 2026 spam update, which ran from 24 September to 8 October, but the month’s real story was Google keeping answers and data on its own surfaces while third-party rank trackers lost much of their view of the results. Answers are in the SEO news September 2026 FAQ.

September’s storyline was Google pulling clicks and data inward. AI Overviews now answer almost every People Also Ask box, most big-brand navigational searches, some local knowledge panels and a Discover test. In the same weeks Google got better at blocking the scrapers rank trackers depend on. Practitioners lost traffic and the outside instruments to measure it.

One correction, because it is circulating: there was no September 2026 core update. Google’s status dashboard records the last core update as May 2026; speculation on 8 October that one could come soon is not a confirmation. This issue of SEO news September 2026 covers 1–30 September, plus the spam update’s completion.

The spam update ran for almost two weeks

Google announced the September 2026 spam update at around 12pm ET on 24 September, saying it could take up to two weeks. It nearly did: the dashboard marks it complete at 4:37am ET on 8 October, 13 days and 16 hours later. It is global, covers all languages, and is 2026’s fourth spam update. Google called it normal, announced no policy change, disclosed no share of affected queries and did not describe it as link spam.

The length is the operational detail. This year’s earlier spam updates ran about one to three days, and John Mueller said this one would likely take longer. Impact came in waves — 25 to 27 September, peaking on Saturday 26 September, again on 30 September, and again from 4 to 6 October — so any drop between 25 September and 8 October gets checked against spam-policy exposure before anyone blames content or competitors. That attribution discipline is what update-correlated regression monitoring is for.

Early observations point at templates. Lily Ray saw highly templated, programmatic pages hit — one page per phone number or area code, likely machine-written. Glenn Gabe reported big drops across verticals and countries, Grokipedia included. On 7 September Mueller said Google’s systems can “lose faith” in sites built on low-value programmatic SEO, and that recovery is slow. A page set built by permutation is the risk surface, and the limits of AI-only SEO show there first; content defensibility scoring belongs before scale. After completion, PPC Land reported an anecdotal rise in manual actions for thin, pure-spam and scaled content. Google has not commented.

Google kept the answers on its own pages

The defining shift was not a ranking change. Google answered more queries on surfaces it owns.

• People Also Ask: AlsoAsked analysed 19.2 million English queries and found 97% of PAA answers in the first week of September were AI Overviews, up from 86% in August.
• Brand searches: on 30 September Chris Long reported AI Overviews on navigational queries for 93% of roughly 100 large brands tested, and DemandSphere said branded-query AI Overviews tripled during September.
• Local and Discover: on 17 September some local knowledge panels were rendering as AI Overviews with follow-up chat; from 18 September Discover is testing a “Dive deeper” tap that opens an AI topic overview instead of the publisher’s article.
• Links and ads: on 22 September Google was testing Overview links, styled like normal links, that route into AI Mode, and AI Mode began testing text-link ads labelled “Sponsored” on 15 September.

PAA is no longer a snippet-win surface; winning it means earning the AI Overview citation, so question mining in the keyword universe has to record which surface actually answers each question.

The model layer moved too. Gemini 3.8 Flash reached AI Mode for Pro and Ultra subscribers on 2 September; the next day users found it giving few or no citations, Robby Stein said “This isn’t working as intended”, and links returned the following morning. A model swap can remove citations overnight, which is why AI search visibility is measured continuously. On 30 September Judge Amit Mehta dismissed the Penske Media and Chegg antitrust suits over AI Overviews, so in the US there is no legal brake for now.

The outside instruments lost the signal

Between roughly 13 and 18 September Google became markedly better at blocking scrapers and rank trackers. Nozzle’s Derek Perkins reported about an 80% drop in retrievable Google data, DataForSEO saw the same, and Sistrix posted a reduced collection rate on 16 September. Google is also testing human verification, and from 30 September Google Maps requires sign-in to read or sort all reviews.

A Search Engine Land analysis on 24 September explained the cost mechanism: Google’s /goto passthrough redirects make scraping cost scale with the number of links per page, so tools shed deep positions first. Its Reddit example, on Semrush data, showed tracked keywords down 25% between May and June with flat traffic — positions 4–10 down 8%, 11–20 down 28%, 21–50 down 34%. A tool’s loss is not Google’s.

That reframes the month’s unconfirmed volatility. Trackers spiked around 3–4 September, with some large sites recovering about 13 September; on 15 September, with UK results most affected; and from about 22 to 24 September, before the spam update. Google confirmed none of them, and the later spikes were read through degraded collection. Beyond the top 10 to 20 positions, third-party rank data is now unreliable, so Search Console becomes the system of record — the premise of opportunity telemetry. One more trap: September year-on-year comparisons are distorted by the September 2025 num=100 removal, so October 2026 gives the first clean year-on-year read.

Search Console gained data and lost some

As of 31 August, Google’s generative AI control — opting a site out of AI Overviews, AI Mode and AI Overviews in Discover — and the Generative AI performance report reached every site worldwide. The report shows impressions but no clicks and no queries. Opting out is a real lever with a real visibility cost.

On 24 September the Performance report gained a Multimodal search type under Web, covering Lens, Circle to Search, image uploads and Chrome’s “Search this image”. Mueller said it is new data, not a reclassification. Dave Smart saw impression and click shifts on some properties from around 10 September, so check Web totals for a discontinuity.

On 8 September indexed pages, homepages included, briefly showed as “Crawled – currently not indexed”; Mueller confirmed a reporting glitch fixed within about an hour, so date-check indexing statuses. On 11 September he confirmed much of June 2026 is missing from the Page Indexing report and will not be backfilled. He also said the old position 1–10 is hard to map onto AI features, and that counting will evolve — average position is a weakening KPI for SEO reporting.

What September’s studies measured

A randomised field experiment published on 23 September put 1,100 US Chrome users through seven-day treatments. Forcing AI Mode cut the external-click share of searches by 18.8 percentage points — news by 12.5, Reddit by 21.2 — with no satisfaction gain: 34% of feedback was negative against 29% positive. The sample skews young and educated, and AI Mode was forced as default.

Detailed’s Glen Allsopp tracked about 70,000 answers to some 1,300 mostly commercial prompts daily from 26 August to 22 September. Only about a quarter of ChatGPT’s cited URLs reappeared the next day, against about half for AI Overviews, and the two agreed on the top brand just 27% of the time. A single citation snapshot measures noise; presence rate across many days measures visibility — the test any LLM visibility tool should pass.

Chartbeat’s 2026 Publisher Playbook, on a news-skewed network, put Google Search referrals down 40.2% year on year to July 2026; Barry Adams has questioned its methodology. BrightEdge put ChatGPT at 95.1% of AI referral traffic in August.

What happened to September’s deadlines

Google Assistant, 4 September

Happened. Phased removal on Android began on 4 September, with Gemini replacing it. By 30 September the “Switch to Google Assistant” option was gone from the Gemini app; Nest and Home speakers and the iOS app are unaffected for now.

Cloudflare, 15 September

Happened, in changed form. Cloudflare dropped its July plan to block Googlebot, Applebot and Bingbot on sites refusing AI training. A new “Disallow AI Training” setting keeps them allowed for search while publishing a no-training preference — but “Block” and “Block on pages with ads” now do apply to them. Legacy settings migrated over the week from 16 September. That is a crawlability decision, not a default to inherit.

EU DMA, 21 September

The 60-day window after the €890M July fine closed on 21 September. Google had redesigned EEA results on 8 September and dropped EEA free product listings on 17–18 September. It appealed the separate data-sharing decisions on 29 September. No Commission compliance ruling has been verified.

UK CMA data portability

Compliance was due around mid-September. No verified report shows the UK portability API live, so treat it as unconfirmed.

What to do next

• Now — attribute 25 September to 8 October to the spam update first. Audit templated and programmatic page sets, especially phone-number or area-code permutations,. There is no core update to blame.
• Now — check Cloudflare bot settings. Confirm Search is allowed, use Disallow AI Training rather than Block, and check whether Agent crawlers are blocked on ad pages.
• Shopify merchants — decide on native checkout. Since 22 September Google has emailed Merchant Center accounts that products are eligible for native checkout in AI Mode and Gemini, on by default; opt out under Sales channels, Agentic. Feed accuracy is now a conversion surface for Shopify SEO.
• Next report — segment the EEA and annotate. Split EEA data from 8 September, mark the Multimodal discontinuity, and hold year-on-year judgements for October.
• End of 2026 — the CMA choice-screen decision. Its 23 September proposals put AI assistants on Android and Chrome choice screens; consultation closed on 9 October.

SEO news September 2026: frequently asked questions

The month in a line: one slow spam update was the only confirmed ranking event, while Google kept more answers and more data on its own pages and the outside instruments lost their view. Attribute the spam window first and make Search Console the system of record. Browse the SEO news archive for the months either side.