Hi,
In Google Analytics GA4 the hourly traffic chart is not available on default. You have to create it as an Exploration.
Go to
Explore and create a new
Blank exploration:
In the settings, click on the
Line chart icon in
Visualization and set
Granularity to
Hour:
Then, click on the
"+" button in the
Metrics, to add a new metric. Search for
Sessions, select it and click on
Import button:
After the
Sessions metric is created, move it to the
Values (use drag and drop) and change the
Date range as needed: