Yes, provided you belong to a user group on the site which has been granted offline access and you a have a Joomla! login module published on the home page.
By default Super Users, Managers and Administrator groups have offline access
To control what user groups have access to your offline site, go to
System > Global Configuration and select the Permissions tab.
Select the appropriate user group and set Offline Access to Allowed
Remember that you’ll also need to a have a Joomla! login published on the home page of your site.