There is no perfect solution. Later Gore-Tex works fairly well, especially if worn with a wicking layer. Venting whenever possible is a good idea as well. Moderating physical activity and removing inner layers is a good idea as well. In really wet conditions, like a boat deck in high winds, it is back to good old impermeable oilskins and foul weather gear. Then you will at east be warm and damp, rather than cold and damp.