Google announced the August 2024 core update on August 15 in a Search Central blog post by John Mueller and marked it complete on the Search Status Dashboard on September 3, 2024, after 19 days and 4 hours. Google said the update "takes into account the feedback we've heard from some creators and others over the past few months" and that it aims to connect people with "a range of high quality sites, including small or independent sites that are creating useful, original content."
That feedback framing pointed at the September 2023 helpful content update, which had hit many small publishers; Google also said the update "aims to better capture improvements that sites may have made." The reality was mixed: Search Engine Land reported that by the end of the rollout most sites hit by the September 2023 update had not seen meaningful recoveries. An unrelated search ranking bug also overlapped the rollout's first four days (the dashboard logged it as a separate incident from August 15), so movement in that window could reflect the bug rather than the update.
If your site moved in the August 15 to September 3 window, Google's standing guidance for core updates applies: audit the pages that lost visibility against the self-assessment questions in the core updates documentation, which Google expanded alongside this update, and invest in overall helpfulness. Our recovery guide covers the sequence.