Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2023	Nov. 06, 2023
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
No Trading Symbol Flag	true
Entity Registrant Name	Strategic Storage Trust VI, Inc.
Entity Central Index Key	0001852575
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	true
Entity Small Business	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity File Number	000-56545
Entity Tax Identification Number	85-3494431
Entity Address, Address Line One	10 Terrace Road
Entity Address, City or Town	Ladera Ranch
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92694
City Area Code	877
Local Phone Number	327-3485
Document Quarterly Report	true
Document Transition Report	false
Title of 12(b) Security	None
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	MD
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		2,760,260
Class T Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		4,756,293
Class W Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		623,588
Class P Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		11,071,269
Class Y Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0
Class Z Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0