Here's how to create a report in Google Analytics that will give you an hourly traffic report for your site.
- Go to Custom Reporting
- Click "Creat new custom report"
- Open the "Site Usage" section on the left and drag Pageviews (or anything else you're looking for) over to one of the blue metric sections on the right
- Open the "Visitors" section on the left and drag "Hour of the day" to the green dimension section on the right
- Click edit next to the preset title and give your report a title if you want
- Click Create Report