I don't recommend Goretex, or other jackets with membranes, for outdoor activities (unless it's raining or it's really windy). They are not nearly as breathable as regular clothes, which means you will be sweating more. And even when you wear wool or a polyester fleece they won't warm as well as when they are dry.
This sound counter-intuitive but a lighter non-membrane jacket works better for me, both in terms of comfort and longer-term retention of body heat (better breathability -> less sweat -> smaller cooling effect).
This sound counter-intuitive but a lighter non-membrane jacket works better for me, both in terms of comfort and longer-term retention of body heat (better breathability -> less sweat -> smaller cooling effect).