Google's May core update finished rolling out. Industry professionals describe the update as heavier than March. Google recommends waiting at least one full week after completion before reviewing data Google's May core update finished rolling out on after nearly 12 days. SEO professionals described the update as heavier than March. Google’s May core update is now complete. The company confirmed the completion on June 2 on the Search Status Dashboard . The update started May 21 at 8:40 AM PDT and ended June 2 at 5:40 AM PDT, for a rollout of 11 days and 21 hours. That’s close to the March core update, which finished in 12 days . What Practitioners Observed When the update launched, Marie Haynes, founder of Marie Haynes Consulting Inc., connected the timing to changes Google announced at I/O the same day. Google had launched Gemini 3.5 Flash as the model powering its AI Search features. Third-party tracking tools showed elevated volatility at several points during the rollout.…