Could Google’s next core update arrive in September 2026?

Update – Google has released the September spam update after all. So not a core update but still :)

Google’s last core update finished on June 2. More than three months later, another rollout in September would hardly be surprising. But as of September 10, Google has announced no September core update and provided no launch date for the next one.

For publishers waiting to recover lost rankings, that leaves an uncomfortable gap between what could happen and what there is evidence for. I understand the impatience after 20 years running publishing websites. A possible update matters when your business depends on search traffic.

September also has a history. Google has launched updates during the month, carried August rollouts into it, and changed different ranking systems from one year to the next. The dates are worth examining before treating this September as a repeat.

Google says it releases core updates several times a year. Its recent record shows how uneven that timing can be: the March 2026 core update began on March 27, followed by another on May 21, less than two months later. In 2025, the June 30 and December 11 core launches were more than five months apart. Google’s ranking history

That makes September a plausible window. It gives us little basis for predicting a particular week, or declaring that Google is overdue.

There has been a more recent confirmed update, too. The August 2026 spam update ran from August 18 to August 21. We subsequently covered complaints from French SEOs about losses during that rollout. Those reports concern the August event; their publication in September does not establish a new update.

The distinction becomes clearer when you look at previous years.

Dates follow Google’s official incident records in US/Pacific time.

Last September did have a substantial, global spam rollout running through most of the month. Its official name was the August 2025 spam update. Google did not announce a separate September 2025 core update.

In 2024, September caught the end of an August core rollout. In 2023, Google launched its helpful content update halfway through September. In 2022, there was a core update actually named for the month.

These examples explain why September attracts attention. They also show why grouping everything under “the September update” can obscure what happened. Different systems changed, and some rollouts were already underway when the month began.

Our current checks do not provide a clear early warning of another broad rollout.

On September 10, we directly inspected Semrush Sensor and DataForSEO’s volatility index, using US desktop Google results across all categories. Semrush’s September 9 reading was 0.6 out of 10, labelled Low. DataForSEO’s latest dated point, September 8, was 5.82 out of 10.

Both matched our earlier check that day. Against our September 6 baseline, Semrush was unchanged; DataForSEO’s earlier dated observation was 5.98 for September 4. We did not see an unusual rise across both providers.

Those numbers belong to separate measurement systems. Semrush also displays a recalibration notice, so its current scores need care when compared with older readings. Neither provider can tell us when Google will announce an update, and these samples do not rule out movement on individual sites.

Reddit adds leads, but the dates matter more than the number of worried comments.

One report we examined places an initial fall in clicks on August 2–3, followed by another decline on August 13. A post published September 10 describes clicks increasing while impressions and “positions” were going down, without giving an onset date or supporting figures.

These are unverified owner accounts. Our review of r/SEO, r/bigseo, r/TechSEO and r/juststart has not established a consistent cluster of fresh, dated ranking changes corroborated by both tools. Cross-posting one complaint in two communities does not make it two independent cases.

There are also concrete reasons to check what a falling chart is measuring.

On September 2, we reported Google Analytics data missing for September 1, including a zero-user reading in our own account. Separately, John Mueller confirmed on September 9 that a brief Search Console indexing-reporting problem had been resolved. His statement did not give an exact onset time.

Neither issue establishes a new core update. And, as we covered in Mueller’s explanation of AI Overview reporting, position data now reflects search features that do not map neatly onto a simple list of ten links.

For European businesses, the changes to Google’s EU search results we reported this week provide another reason to examine the country and type of result involved before attributing a change to a global core rollout.

My assessment is that September remains a realistic possibility. The evidence available today does not justify a launch prediction or a percentage chance.

An official announcement would settle the question. Before then, fresh movement across unrelated sites, beginning around the same dates and supported by unusual changes in multiple tracking tools, would give us a reason to investigate further. We would label that evidence unconfirmed.

We will keep this page updated as the evidence changes. If your site has gained or lost visibility, the useful details are the first affected date, the pages and queries involved, the country and device, and whether the change is in clicks, impressions, rankings or Discover. Those details will tell us more than another countdown to an unannounced update.