Being wet for an extended period can get demoralizing, not to mention uncomfortable, even if it isn’t hypothermia weather. The skin-clinging of clothes, the sopping hair, the thigh chafing, and soggy underwear that never dries out. No, just “going wet” is definitely not for everyone, and I suspect many of these go-wet types also likely practice hiking with a vengeance to the nearest shelter to dry out.
Instead, I recommend carrying a lightweight umbrella and a Rain Wrap, made by ULA Equipment. The umbrella will keep you reasonably dry from the waist-up, and the Rain Wrap - basically a “skirt” of sil-nylon - will keep your lower body dry to about the knees. That’s about all the coverage that’s really beneficial; full rain pants tend to be a lot warmer, as well as harder to put on and take off; besides, the lower legs and feet generally tolerate being continually wet quite well (lightweight breathable footwear and wool socks greatly assist in this regard).
Carrying an umbrella is actually no big deal on the AT. The trail corridor is wide and well manicured, so bumping into things with a brolly overhead isn’t too much of a problem. Usually you’re beneath tree cover where the hazards of wind and lightning tend to be reduced. Of course it’s also a good idea to carry an ultralight rain jacket or poncho as a backup, such as when you’re hiking above treeline or when the terrain is especially rough. You can also spread a poncho just over your backpack while hiking beneath an umbrella, for the extra protection it affords your gear.
If you use hiking poles, you can simply stash one of the poles when using the umbrella, then alternate your “umbrella” and “pole” hand throughout the day for comfort.
The GoLite Dome umbrella only weighs about 8 ounces, I believe. That may be 8 ounces of dead weight when not in use, but it can more than redeem itself when needed. Also keep in mind that even the “go wet” types should be carrying some type of rain gear for a colder rain storm, should one occur. A UL umbrella and jacket or poncho, as a system, can still weigh less than the Gore-tex jackets that almost all thru-hikers carried just a few years ago.
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