Google’s May core update is now complete. The company confirmed the deal on June 2 on its search status dashboard.
The update began on May 21st at 8:40 a.m. PDT and ended on June 2nd at 5:40 a.m. PDT, a rollout of 11 days and 21 hours. This is close to the March core update, which was completed in 12 days.
What practitioners observed
When the update was released, Marie Haynes, founder of Marie Haynes Consulting Inc., said: connected the time to changes that Google announced at I/O on the same day. Google had introduced Gemini 3.5 Flash as a model for its AI search functions.
Third-party tracking tools showed increased volatility at several points during the launch. Some practitioners described the May update as more noticeable than the March update.
On the first weekend, Glenn Gabe, SEO consultant at G-Squared Interactive, said, reported Impact “across industries and countries”.
He later remarked to X:
“Again, the May 2026 core update has been powerful so far… much more like a typical core update. March was mediocre, but May is big.”
Lily Ray, vice president of SEO strategy and research at Amsive, also posted on X about weekend moves. Ray wrote:
“A handful of sites saw a big spike over the weekend with the core update.”
Why this update may be difficult to read
Completion does not mean that every movement during the rollout had the same cause.
The ranking data showed movement at multiple points in the rollout, not just the beginning and end. A site that moved on May 24th may need to be read differently than a site that moved on June 2nd.
This makes single-day comparisons risky. Google’s core update documentation says to wait at least a full week after completion to analyze Search Console data and then compare that week to the week before the rollout begins. This means that the earliest clean comparison window is around June 9th.
2026 update schedule
The May core update is the fourth confirmed search-related update listed by Google on the Search Status dashboard in 2026 and the second search core update this year.
There were approximately six weeks between the completion of the March core update on April 8th and the May launch on May 21st.
This is what the current timeline looks like.
- May 2026 Core Update: 12 days (May 21 to June 2)
- March 2026 Core Update: 12 days (March 27 to April 8)
- March 2026 Spam Update: Less than 20 hours (March 24-25)
- February 2026 Discover Core Update: 22 days (February 5th to February 27th)
- December 2025 Core Update: 18 days (December 11th to December 29th)
Looking ahead
Google’s guidelines point to June 9th as the earliest clean comparison window in Search Console.
From there, the most useful reading emerges from patterns across pages, queries, countries, devices, and search types. Single-day ranking movements may be less reliable, especially given the volatility seen at several points during the launch.
Featured Image: JHVEPhoto/Shutterstock
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