Core updates usually arrive a few months apart. In late 2023, Google broke that pattern: the October 2023 core update finished on 19 October, and the November 2023 core update started just two weeks later, on 2 November. For site owners still digesting October, it felt like the ground moved twice.
Google did explain the timing. It said the November update improved a different core system from the one changed in October. That detail is easy to miss, but it helps explain why back-to-back updates are possible and why “recovery” from one core update does not have to wait for the same system to be updated again.
This guide covers the confirmed rollout dates, Google’s explanation, what data providers reported, the overlap with the November 2023 reviews update, and a practical process for working out what changed on your site.
Key Takeaways
- The November 2023 core update ran from 2 to 28 November 2023, according to the Google Search Status Dashboard.
- Google said it involved an improvement to a different core system than the October 2023 core update.
- It was the fourth broad core update of 2023, after March, August and October.
- The November 2023 reviews update (8 November to 7 December) overlapped most of the rollout.
- Data providers reported it as more volatile than the October 2023 update; Similarweb called its average position change the highest since June 2021 in its comparison.
November 2023 Core Update: The Facts
| Detail | What we know | Source |
|---|---|---|
| Name | November 2023 core update | Google Search Status Dashboard |
| Start | 2 November 2023 | Dashboard incident |
| Completed | 28 November 2023 | Dashboard incident |
| Announced duration | “Up to 2 weeks” (actual: about 26 days) | Dashboard incident |
| Type | Broad core update | |
| Confirmed? | Yes | Dashboard |
| Gap from previous core update | Started 14 days after the October 2023 core update finished | Dashboard |
| Overlap | November 2023 reviews update, 8 Nov – 7 Dec 2023 | Dashboard |
Google estimated two weeks, but the dashboard shows the rollout completed on 28 November. Expected durations are estimates, which is why you should always check the dashboard incident page for the actual end date before analysing data.
Why a Second Core Update So Soon?
Google uses many systems in its core ranking, not one monolithic algorithm. A “core update” is a significant change to one or more of those systems. When Search Engine Land asked about the timing, Google’s explanation was simple:
“this month’s core update involves an improvement to a different core system than last month.”
— Google, as quoted by Search Engine Land, Google November 2023 core update released
Google did not say which systems were involved in either update, so any claims about “what November targeted” are speculation. What the statement does tell us:
- Core updates are not a single dial being turned up and down; several systems can change on separate schedules.
- Two updates close together do not mean Google “reversed” October’s changes.
- A site can be affected by one core update and not the next, because different systems may be involved.
Our explainer on how Google rolls out core updates covers this in more detail, and the ranking systems guide explained lists the systems Google publicly names.
Patterns Observed by Data Providers
Google did not name winners or losers. Search Engine Land’s round-up of data provider findings is the most useful published summary. Because the reviews update began on 8 November, Semrush deliberately focused on 6 to 8 November.
| Provider | Reported finding |
|---|---|
| Semrush | Peak Sensor volatility of 9.3 on 7 November, compared with 7.9 for the October 2023 core update |
| Semrush | 12.75% of top-10 URLs had not been in the top 20 before, vs 10.85% in August 2023 and 8.7% in March 2023 |
| Similarweb | SERP Seismometer peaked at 71 (out of 100) on 7 November; fluctuations began rising on 5 November |
| Similarweb | Average position change of 4.43, the highest for a core update since June 2021 in its comparison; retail most volatile, health least |
| Sistrix | Said the overlapping November changes were “impossible to separate” |
These numbers describe each tool’s tracked keywords. They show that November was a noticeably turbulent update, not which sites deserved to win or lose.
The Overlap With the November 2023 Reviews Update
Six days into the core update, Google released the November 2023 reviews update, which ran until 7 December. It was also the last reviews update Google announced on its dashboard, saying future improvements would happen at an ongoing pace. For sites publishing reviews, the overlap is a real analytical problem: a drop on review pages in mid-November could come from either update.
- If losses are concentrated on review and comparison content, consider the reviews system as a likely factor.
- If losses span informational, commercial and review pages alike, a core update is the more likely driver.
- If you cannot tell, treat both sets of guidance as relevant: people-first content and high-quality, first-hand reviews.
See how to analyse overlapping updates for a structured method.
Step-by-Step: Reviewing a November 2023 Change
- Mark the timeline: October core (5–19 Oct), October spam (4–20 Oct), November core (2–28 Nov), November reviews (8 Nov–7 Dec).
- Pick clean windows. Compare 20 October to 1 November (between updates) with early December, at least a week after the core update ended.
- Split pages into review content and non-review content, then compare trends.
- Look at which queries lost clicks and which pages now rank for them.
- Assess affected content against Google’s helpful content questions, ideally with someone unconnected to the site.
- Make sustainable improvements and keep a change log, then monitor through later core updates.
Our walkthrough of diagnosing core update drops in Search Console and the content quality audit after a core update go into each step.
What Google Advised
Google’s guidance for this update matched earlier core updates. Its core updates documentation says sites do not need to take drastic action for small drops, and that improvements can be recognised between core updates as well as during them. Search Engine Land’s November 2023 coverage also quoted Google acknowledging that its automated ranking systems “aren’t perfect”, a reminder that a drop is not necessarily a judgement that something is wrong. Read more in our hub on Google core updates and our helpful content guidelines.
How It Fits the Bigger Timeline
November 2023 closed out an intense year: four core updates, a helpful content update, a spam update and three reviews-related updates (February, April and November). The next core update, in March 2024, was much bigger and folded the helpful content system into core ranking (see how the helpful content system became part of core ranking). Wikipedia’s timeline notes that two core updates within about a month was unusual. The full year is covered in our 2023 algorithm updates review.
Common Mistakes
- Assuming November undid October. Google said a different core system was improved.
- Using October data as your “before”. October itself was turbulent; use the short gap between updates.
- Ignoring the reviews update. Review-heavy sites had two overlapping updates to consider.
- Rewriting everything at once. Without a change log, you will not know what helped later.
- Expecting a fixed recovery date. Google gives no timelines, and improvements can take months to be recognised.
Related Guides
- Google’s November 2023 Reviews Update: The Last Announced Reviews Update
- How the Helpful Content System Became Part of Google’s Core Ranking (2024)
- Google’s Scaled Content Abuse Policy Explained
Frequently Asked Questions
When did the November 2023 core update roll out?
It started on 2 November 2023 and Google said the rollout was complete as of 28 November 2023.
Why did Google release two core updates in two months?
Google said the November update involved an improvement to a different core system than the October update.
Was the November 2023 core update more volatile than October?
Data providers reported higher volatility. Semrush’s peak Sensor score was 9.3 vs 7.9 in October, and Similarweb also reported higher fluctuations.
Did the November 2023 reviews update overlap?
Yes. The reviews update ran from 8 November to 7 December 2023, overlapping most of the core update.
Is there a specific fix for a November 2023 core update drop?
No. Google’s guidance is to focus on sustainable, people-first improvements rather than quick fixes.
Conclusion
The November 2023 core update showed that core updates can come back-to-back because Google’s core ranking is made of several systems. If your site moved in late 2023, use clean comparison windows and separate review content before drawing conclusions. Need a second opinion? Our SEO specialists can audit your history and plan sustainable improvements: get a free quote.
References
- Google Search Status Dashboard: November 2023 core update
- Google Search Status Dashboard: November 2023 reviews update
- Search Engine Land: Google November 2023 core update released
- Search Engine Land: Data providers on the November 2023 core update
- Google Search Central: Google Search’s core updates
- Wikipedia: Timeline of Google Search
