OH CRAP, WTF is a minnow bucket? A live bait fisherman... now I understand.
OK, I fished a couple bass tournaments on the Potomac River during the month of April over the last several years. One I fished two days in steady rain and the temps never made it to 52 either day. I had insulated parka and pants, with a chamois shirt and khaki pants underneath - no problem. Another, several years ago we had rain 1st day, temps made 50 in the afternoon, second day it snowed - had an inch on the ground - and we didn't sit in the motel. I was in a bass boat, not a kayak, so we were also running around the river at 65 MPH. Dry, warm (added a fleece vest for that one) and we caught fish, again in an insulated parka and bibs. Bibs are the best as they offer more protection to your back when you bend over to lip a fish and provide more warmth to the kidneys. I have ice fished in the same insulated parka & bibs with temps in the low 20's and wind blowing, needed sweatpants and fleece vest for that one though. For the kayak though I prefer the light to moderate Goretex parka, rain pants are an option depending on temp and severity of rain. Summer - I wear swim trunks with the nylon mesh liner (forget cotton under shorts if chance of getting wet) & the lightweight parka and I don't care how hard it rains.
P.S, My apologies to all live bait anglers, I was kidding, I really don't care if you prefer live bait.