Aloha from the Big Island's leeward or dry side, aka the Kona Coast. Kona exists in the rain shadow of several large volcanoes, at least one of which is still active. The trade winds blow clouds onto the other side of these mountains and as they are pushed upward they cool and rain all over the windward or Hilo side of the Big Island. Then as the winds spill over the mountains and drop back down toward sea level, they warm up and as all attentive physics students know, that lowers both the humidity and the likelihood of rain. Talk about micro-climates. You see cactus on this side of Hawaii and rain forest on the other side.
Kona is probably our favorite place in Hawaii. The other DrC and I are both native Californians and, as such, are more comfortable with low levels of humidity. To be sure, we've lived on Guam and in the Washington, D.C. suburbs, both of which are very humid. The Dallas area is also humid come summertime. While we've lived in humid locales for four of the last 36 years, we prefer low humidity and the Kona Coast has it.