Q. Can one during the great heat of summer, on the Nine Days sit outside in the backyard while being covered with a very wet dripping towel?
A. It stands to reason that it is permitted since even if considered similar to a bath, it is only partial, cold and needed to protect oneself from the heat.
Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller and Horav Chanoch Ehrentreu Shlit’a.