Crap brakes in the wet

On 2011-05-20, Travis (aka Bruce)
was almost, but not quite, entirely unlike tea:
So it's reasonable to expect that your brakes won't work as well when
the rim has been lubricated with water compared to dry conditions, but
I was just wondering if there is such a thing as a "wet weather" brake
pad which one could swap in over the winter months? Something made
from a special material perhaps which grips a wet rim a bit better.

My road bike's brakes aren't fantastic when it is wet, but the
mountain bike's breaks are simply atrocious. It's your basic
cantilever design and they're horrible.

Is it possible that it's a cheap supermarket class mountain bike with
steel wheels?

Steel wheels simply will not ever stop in the rain. You can make a
perpetual motion machine out of them.

--
TimC
Remember, we're using the Internet, not Grammar! --Kibo