How long should you expect a traffic dip after a migration?
- Published November 6, 2026
- Linked from 3 answers
- In a cluster of 7
For a medium-sized site, plan for a few weeks or more before the new addresses replace the old ones in results, and longer for a large site. Google’s traffic-drop guide says a medium-sized site can take a few weeks for Google to notice a URL change, and its site-move guide adds the condition that matters: a move is complete only when “Googlebot will have to visit every URL on your old and new site at least once.” There is no fixed date, because how fast that happens depends on the size of the site and how fast it can be crawled.
What sets the length of the dip
| Factor | Shorter dip | Longer dip |
|---|---|---|
| Size | Few URLs to recrawl | Tens of thousands of URLs |
| Redirect quality | Every old URL maps to its true equivalent | Gaps, chains, or mass redirects to one page |
| Server speed | Fast responses let Googlebot crawl more | Slow responses limit crawling |
| What else changed | Only the URLs | URLs plus templates, content and internal links at the same time |
| Type of move | Protocol or domain change with identical pages | Restructure with merged or rewritten pages |
Google’s site-move guide states that there are no fixed crawl frequencies and that crawl speed depends on the site’s size and the speed of crawling that is possible. That is why the same move can settle in weeks on one site and take months on another.
Set a window before launch
Decide in advance how long a dip you will tolerate, based on the factors above, and write it down. During that window, watch whether Googlebot is reaching the new URLs, whether they are being indexed, and whether the old URLs are dropping out, rather than judging the move by week one. Search Console’s Page indexing report and URL Inspection show the first two; the Performance report shows impressions moving from old URLs to new ones.
If traffic has not started to return by the end of the window, look at the redirects first, then at what else changed in the move. Why some pages do not come back at all is a separate question, covered in why some pages never recover their rankings after a migration. An HTTPS or domain move has its own version of this, read in why rankings drop after an HTTPS or domain change done correctly. The window is your own alarm level, not a limit Google sets: a dip inside it is probably the move being processed, and a dip past it is the signal to diagnose.
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