Complete 2016 Long Range Weather Forecast for the Hawaii Region, November 2015 to October 2016 includes week-by-week details. Digital Download.
Free 2-Month Weather Forecast
APRIL 2016: temperature 75.5° (avg.); precipitation 4.7" (10" above avg. E, 1" above C+W); Apr 1-11: Isolated showers C+W, rain and t-storms E; seasonable; Apr 12-18: Showers and t-storms; cool, then warm; Apr 19-30: Brief showers C+W, a few t-storms E; cool E, warm W..
MAY 2016: temperature 77.5° (1° below avg. E, 2° above W); precipitation 0.2" (0.5" below avg.); May 1-11: Isolated showers; cool, then warm; May 12-31: Brief showers C+W, rainy periods E; cool C+E, warm W..
Annual Weather Summary: November 2015 to October 2016
Winter season temperatures will be below normal on the Big Island and Maui; near normal on Molokai, Oahu, Lanai, and Kahoolawe; and above normal on Kauai. The coolest periods will be in late December, early and mid-January, mid-February, and early March. Winter will be much rainier than normal, especially from November into mid-January.
April and May will be much rainier than normal, with temperatures close to normal.
Summer temperatures will be cooler than normal, on average, with slightly below-normal rainfall. The warmest period will be from the latter half of August into early September.
September and October temperatures will be slightly cooler than normal, with near-normal rainfall.
NOTE: Temperature and precipitation vary substantially based upon topography. The detailed forecast focuses on the Honolulu?Waikiki area and provides general trends elsewhere.
KEY: East (E), Central (C), West (W)