If your traffic has jumped around this year and nobody can tell you why, this article is for you. Google has shipped two broad core updates, three spam updates, a Discover-only core update, a policy change in Europe and a wave of AI features in 2026, and each one moved rankings for a different reason. Below is what actually happened, in the order it happened, explained the way we explain it to clients: no jargon, no panic, and a clear list of what to do next.
The 2026 timeline at a glance
| Date | Update | What it touched |
|---|---|---|
| 5 February | Discover core update | Google Discover feed only, US English first |
| 24–25 March | March spam update | Global, quiet on the surface |
| 27 March – 8 April | March core update | Global search results, long 45-day-style rollout |
| 21 May – 2 June | May core update | Launched with the I/O AI announcements |
| 24–26 June | June spam update | Global |
| 18–21 August | August spam update | Global; unusually high volatility |
| 30–31 August | EU site-reputation change; Search Console AI reports | Policy and reporting, not ranking systems |
| 4–15 September | Unconfirmed volatility | A change on 4 Sept appeared to be reverted on 13 Sept; more movement on 15 Sept |
The March and May core updates: what “core” really means
A core update is Google re-scoring the whole web. It is not a penalty and it does not target a single trick. Google changes how it weighs hundreds of signals, then every page is re-ranked against everyone else on the same topic. That is why a site can lose 30% of its traffic without doing anything wrong: a competitor simply became a better answer under the new weighting.
The March update (27 March to 8 April) was the first broad core update of the year and behaved like the 2024–2025 ones: sites with thin, repetitive or AI-padded content lost ground, and pages that showed real first-hand experience gained. The May update (21 May to 2 June) landed alongside Google I/O and the AI Mode overhaul, which is not a coincidence. Google needs its ranking systems to surface pages that its AI can quote and cite, so clarity, structure and verifiable authorship mattered more than ever.
One important change in Google’s own guidance this year: recovery no longer has to wait for the next core update. Google updated its documentation to say that smaller core changes now roll continuously, so a site that fixes its problems can recover between the big named updates. In practice we have seen that: clients who cleaned up thin pages in April saw partial recovery in June without a named update.
Three spam updates and the August shake-up
Spam updates are different. They target specific behaviours listed in Google’s spam policies: scaled low-value content, expired-domain abuse, hacked pages, cloaking, link schemes and, since 2024, site-reputation abuse (renting your domain’s authority to third-party content). March and June were quiet. August was not.
The August spam update ran from 18 to 21 August, and SE Ranking’s measurement found that 16.71% of URLs that had been in the top 10 dropped beyond position 100, compared with about 9.2% in a normal week, an increase of more than 80%. Every one of the 20 industries they tracked was affected. Google followed up on 31 August by saying its spam team is “fighting and well resourced”, which is about as clear a statement of intent as Google gives.
If you dropped in the third week of August, the useful diagnostic question is not “which update was it?” but “which page types and which queries lost visibility?” Losses concentrated on programmatic pages, thin location pages, doorway-style service pages or guest-post sections point to spam systems. Broad losses across your best content point to a core re-weighting instead.
What is happening in September
As of 24 September Google has not announced a September core update; the confirmed core updates for the year remain March and May. That does not mean nothing happened. Tracking tools recorded a change on 4 September that appeared to be rolled back on 13 September, and another sharp spike in volatility on 15 September. Google’s position, restated in August, is that it never rolls out a named update before announcing it, so these are unannounced adjustments rather than a hidden core update. Treat them as noise unless a pattern holds for more than two weeks.
Two smaller September changes are worth knowing. Google published documentation on regional differences in the search experience (results and features now vary more by country, which affects how you should read rank-tracking data), and on 18 September it began showing local businesses inside aggregator and supplier search units, a small win for local companies competing with directories.
AI Mode, the new search box and what it means for your traffic
The biggest shift of 2026 is not an algorithm update at all. At I/O in May, Google made Gemini 3.5 Flash the default model in AI Mode, said AI Mode had passed one billion monthly users with queries doubling every quarter, and rebuilt the search box for the first time in 25 years so it accepts text, images, files, videos and open Chrome tabs. It also announced “information agents” that watch the web for you and booking agents that can call businesses on a user’s behalf.
For a website owner this means three things. First, more questions get answered on Google’s page, so informational traffic keeps falling even when rankings hold. Second, being cited inside an AI answer is the new position one, and citation favours pages with clear structure, named authors, up-to-date facts and schema markup. Third, transactional and local intent still sends clicks, which is why service pages, product pages and Google Business Profiles have held up far better than blog posts this year.
New Search Console AI reports and the EU policy change
On 31 August Google rolled out generative AI reporting in Search Console worldwide. You can now see impressions from AI Overviews and AI Mode at page level, split by country and device, and you can opt a site out of generative AI features if you choose. This is the first official data on AI visibility, so set a baseline now; in three months it will show you which pages AI actually quotes.
From 30 August, inside the European Economic Area, a manual action for site-reputation abuse no longer demotes the offending section directly; the third-party content is instead ranked independently of the host domain’s authority. If you publish coupon, review or sponsored sections written by outsiders and you have European traffic, expect those sections to stand or fall on their own merit. Two technical notes for teams: Google’s google.com/goto redirects on result links can confuse older rank trackers but change nothing for SEO, and the Content API for Shopping was switched off on 1 September, so any custom feed integration that has not moved to the Merchant API is now returning errors.
If you were hit: a recovery plan that works
Date the drop precisely
Compare Search Console clicks by day against the timeline above. A drop starting 18–21 August is spam-related; 27 March or 21 May points to a core update; anything in September is unconfirmed and may reverse.
Find the pattern, not the page
Group losing URLs by template: blog, category, location, product. Losses concentrated in one template tell you what Google no longer trusts. Our free on-page SEO checker will show the basics for any URL in seconds.
Cut or merge before you write
Thin, duplicated or mass-produced pages drag down the pages next to them. Consolidate, redirect and improve before adding anything new.
Make every important page quotable
A clear H1, a direct answer in the first paragraph, named author with a bio, updated dates, real examples and accurate schema. That is what both the core systems and AI Mode reward. Generate valid markup with our schema generator.
Measure across engines
Check Bing too; its share is rising with Copilot, and it does not reset with Google’s updates. Our Bing rank checker is free.
Give it time, then verify
Google now applies smaller core changes continuously, so improvements can show within weeks, but sustained recovery still tends to arrive with the next named update. Judge the work on three months of data.
The through-line of 2026 is simple: Google is removing pages that exist only to rank and promoting pages that a person, or an AI answering a person, would actually want to cite. Build for that and the updates stop being threats.
Not sure which update hit you?
Request a free marketing audit. We will date the drop against Google’s timeline, identify the templates that lost visibility and give you a prioritised fix list you can act on.
