Going on vacay, outfit help

💙 • Married, Mommy to 1 + 1 on the way 💗

We’re going on a vacation where it will be in the 80’s all week and super hot. We will also be outdoors most of the time. I have cute little shorts and tee shirt outfits for my baby boy but I usually do an undershirt onesie underneath. But since it will be so hot I’m worried about him overheating. Should I skip the undershirt onesies? They’re mainly there to protect his skin and keep him comfy and clean