Additional calendar-related features and issues within Microsoft Teams for business
Hi Bolte, Ben
Based on my research, currently, the native Channel Calendar in Microsoft Teams does not provide a Month view like the main Teams Calendar. A Channel Calendar is a filtered view of the Microsoft 365 group calendar associated with the team and shows events for a specific channel.
https://support.microsoft.com/en-us/teams/meetings/see-all-your-meetings-in-microsoft-teams
The main Teams Calendar, on the other hand, supports Day, Work week, Week, and Month views. Therefore, although you may see a Month option in the main Calendar area of Teams, that does not mean the same view is available within the Channel Calendar tab.
https://support.microsoft.com/en-us/teams/meetings/manage-your-calendar-in-microsoft-teams
If you specifically need a monthly block-style calendar within the channel, one possible workaround is to create a calendar-style list in SharePoint/Microsoft Lists. A SharePoint or Microsoft List containing date columns can be configured with a Calendar view, which provides a calendar-style layout for the items.
https://support.microsoft.com/en-us/sharepoint/lists/create-a-calendar-view-from-a-list
It is worth noting that this would be a separate calendar solution rather than a Month view of the existing Teams Channel Calendar, so the events would need to be managed separately.
If your requirement is specifically to display the existing Teams Channel Calendar in a native monthly block format, this option is not currently available.
I hope this information helpful for your workflow.