The pilot reported he was landing on runway 19 with winds variable from the south and west at 10 knots and wind gusts to 25 knots. During the landing, the main landing gear touched down, and before the nosewheel touched down, a strong wind gust from the southwest lifted the airplane and right wing. The pilot lost directional control, and the airplane veered off the left side of the runway onto a wet, slippery wooded area. The pilot reported that there was no mechanical malfunction with the airplane.