Google ranking volatility continues after August spam update

Google's August 2026 spam update began on August 18 and was declared complete on August 21. The problem, according to a survey by Barry Schwartz at Search Engine Roundtable, is that the dust hasn't settled: SERPs continue to swing abnormally days after the official end, as if a new ranking adjustment were rolling out without Google having announced anything.

For those who work with organic visibility in Brazil, understanding the difference between an "update that's over" and a "stabilized SERP" has stopped being a detail. It's exactly in this interval that rash decisions (rewriting content, deindexing a page, changing architecture) tend to get made based on noise, not signal.

What the data shows

Schwartz consolidates volatility indexes from about 15 independent tools (AccuRanker, Semrush, Sistrix, Mozcast, DataForSEO, Wincher, Algoroo, among others). The pattern is the usual one in these cases: divergence between them, which already says something about how this gets measured.

Some examples from the material itself:

• Sistrix went from near-zero values between August 9 and 15 to peaks above 55 on days 23 to 26, in other words, it captured strong movement precisely after the update's declared end.
• AWR kept high, erratic readings (from 31 to 71) throughout the entire second half of the month.
• Semrush, on the other hand, barely moved: it stayed locked between 5 and 7 for the entire period.

This discrepancy isn't a flaw. Each tool monitors a different set of keywords, in different niches and countries, with distinct calculation methodologies. One that tracks a lot of retail and YMYL will flag an earthquake where another, focused on technical long tail, records calm. The practical lesson: never draw a conclusion from a single source. The aggregate chart that Wireboard publishes works more as a general thermometer than as a verdict.

Why the volatility continues

Schwartz notes that August was a month of chained tremors: besides the confirmed spam update, there were unconfirmed movements around days 1 to 3, 5, and 13, plus earlier instability at the end of July. The last confirmed core update before that was the one from May 2026, which ended on June 2, followed by the June spam update.

In other words, the ecosystem had been swinging well before the August spam update, and continued afterward. This is consistent with Google's current ranking architecture, increasingly dependent on continuous systems and AI layers (AI Overviews, AI Mode) that redistribute clicks in real time. There's no longer a clean "before and after" for each update; there's a permanent state of readjustment.

The author himself raises two hypotheses and partially rules out both: it could be a silent ranking update, or it could be related to the PDF indexing problem Google was facing during the period. "Google is pushing something, for sure," one of the quoted comments sums up. Honesty is the point here: nobody is certain, not even those who track this daily.

What the community is reporting

The comments Schwartz collected on WebmasterWorld and on his own site paint a nervous picture. One SEO reports a niche that had been stalled "for months" suddenly starting to shuffle positions after a spike in Googlebot activity overnight. Another complains about legitimate pages disappearing from the index while spam sites remain well-ranked. There are reports of dead traffic in both Search and Discover, and even of visitors being sent to 404 pages.

One comment sums up the business cost of this unpredictability: "It's pointless, you can't build a business on this kind of unpredictability. If your business depends on someone else reshuffling results every few weeks, you don't have a business." The line is harsh, but it points to a real problem of single-channel dependency.

What to do (and what not to do) in Brazil

The wrong reaction is to act in the middle of the tremor. While aggregate indexes are elevated, any cause-and-effect analysis is contaminated: you don't know if you dropped because you got worse, because a competitor rose, or because the algorithm is still settling.

Practical recommendations for this scenario:

• Wait for things to stabilize before diagnosing. Compare positions and traffic against a reference window prior to the 18th, and only draw conclusions after aggregate volatility returns to baseline. Measuring at the peak is measuring noise.
• Separate ranking drops from technical problems. Reports of pages falling out of the index and traffic being sent to 404s suggest an indexing bug, not a penalty. Check the Pages report and the URL Inspection tool in Search Console before assuming you lost position due to quality. These are completely different diagnoses and actions.
• Use more than one tool. If only yours is flagging an earthquake, the earthquake might just be in its own slice of data. Cross-check against the aggregate.
• Monitor AI Overviews. One of the comments mentions a rise of more than 100% in AI Overviews appearances. In Brazil, with AI Mode expanding, part of what looks like a "ranking drop" is actually a click captured by the generated answer ahead of the organic result. It's worth tracking how much of your content is becoming a cited source versus how much is losing the click.

What remains open

Google had not confirmed any update after August 21 as of the writing of Schwartz's piece. Without confirmation, it's not possible to say a new update exists, only that several independent tools and many professionals are seeing simultaneous movement, which is rarely a coincidence.

For those who depend on organic traffic, the strategic reading doesn't change: chronic SERP instability in 2026 is an argument in favor of diversifying discovery channels and treating SEO as measurable engineering, with disciplined analysis windows, rather than as a reaction to every daily swing.