Create a folder on your hard drive or network share

Download the Office 2016 Deployment Tool from the Microsoft Download Center.

Execute the Deployment Tool and install it in the folder you created.

Create a .xml with the following: (edit path)
Full overview of the Office Deployment Tool.

 <Configuration>
  <Add OfficeClientEdition="64" Channel="Monthly" ForceUpgrade="TRUE" DownloadPath="[path]">
    <Product ID="O365BusinessRetail">
      <Language ID="nl-nl" />
      <ExcludeApp ID="Groove" />
      <ExcludeApp ID="Lync" />
      <ExcludeApp ID="OneNote" />
    </Product>
  </Add>
  <Property Name="PinIconsToTaskbar" Value="TRUE" />
  <Property Name="SCLCacheOverride" Value="0" />
  <Property Name="AUTOACTIVATE" Value="0" />
  <Property Name="FORCEAPPSHUTDOWN" Value="FALSE" />
  <Property Name="DeviceBasedLicensing" Value="0" />
  <Updates Enabled="TRUE" />
  <RemoveMSI />
  <AppSettings>
    <User Key="software\microsoft\office\16.0\excel\options" Name="defaultformat" Value="51" Type="REG_DWORD" App="excel16" Id="L_SaveExcelfilesas" />
    <User Key="software\microsoft\office\16.0\powerpoint\options" Name="defaultformat" Value="27" Type="REG_DWORD" App="ppt16" Id="L_SavePowerPointfilesas" />
    <User Key="software\microsoft\office\16.0\word\options" Name="defaultformat" Value="" Type="REG_SZ" App="word16" Id="L_SaveWordfilesas" />
  </AppSettings>
  <Display Level="None" AcceptEULA="TRUE" />  
</Configuration>

Run the following to download the offline installer:

 [path]\setup.exe  /download [configname].xml 

Run the following to use the offline installer:

 [path]\setup.exe  /configure [configname].xml