Maui weather can be unpredictable, Upcountry is much cooler especially at night due to higher elevation (3500 FT). If its raining on the west side, its probably sunny on the east side. We recommend checking weather updates a week before arriving.
The ceremony and reception will be held outside on the lawn and preferred attire is semi-formal or aloha wear. We recommend shoes that are nice but also comfortable and easy to walk and dance in. It may be warm when the wedding starts but could dip into the 60s later in the night. A jean jacket, sweater, or shawl is a must for Kula evenings!