I am shooting a documentary in Japan in June. It will be during the rainy season and I will be hiking a substantial distance (maybe 15 miles a day) in this weather. I have camera equipment, a tent, and some general supplies for when I reach a location.

I don't have any clothing that will keep me dry and warm for these conditions and I was wondering if /fa/ knew of a great jacket, pants, and even boots that could keep me dry. Ideally, the jacket and pants need to be as thin, light, and warm as possible since I will be carrying so much stuff. Any great jackets/boots/pants online I can check out? My conventional search didn't bring up anything spectacular.