Website traffic spikes : spam or ?

In the Jetpack app on my phone, which keeps track of my WordPress sites, I keep getting these messages about this blog (zonk.be) getting lots of traffic: about 50 hourly views (which is a lot since I might get one visitor a day):

If you’ve ever managed a WordPress blog you’ll know spam is a huge issue. Even if you hardly get regular visitors those spambots will find your site and if you have comments enabled will pummel you.

It just seems weird that spambots would generate so many hits on the same page or all visit at the same time. So I’m unsure what the unusual traffic is about. It all seems to f be going to the archives page.

Anyone else experiencing this and figured out what it could be?