be smooth
There can be a surprising amount of grip on wet roads, but it's always important to be smooth and recognize that traction is indeed reduced compared to dry conditions. That being the case, it's also important to reduce lean angle while cornering. Leaning your upper nody toward the inside of the curve allows the bike to remain more upright. Ensure that your arms are relaxed by bracing your legs and lower torso against the pegs and gas tank. That way the front tire doesn't have to fight against upper-body tension.