The waders will keep you dry, but that's about all. If it's warm out, be sure to wear a lightweight nylon pant that will release any moisture so the waders can breath. Denim is not the best material to let go of moisture and will be uncomfortable inside modern waders.
Will neoprene waders keep me dry?
Neoprene waders have been the industry standard for decades because of their reliable, waterproof nature. ... While neoprene waders will keep you dry any time of the year, they are not recommended for warmer temperatures or if you will be involved in walking long distances or extended strenuous activity.
Are all waders waterproof?
Many waders have some rubber or PVC in their construction, which provides 100% waterproof protection and added durability. The boot components of most neoprene waders are essentially galoshes built with PVC or rubber.