Temperatures in Haleakala National Park vary a lot due to its dramatic terrain. Temperatures here can range from a high of 27 degree celsius in Kipahulu to a low of -1degree celsius at the summit on one day itself. Rainfalls are frequent and can occur even on sunny days. Any month of the year is a good time to visit the Haleakala National Park. Weather here can be categorised according to the region:
Do keep in mind that the entry to the Haleakala National Park depends a great deal on the weather conditions. Flash floods are a serious hazard in Kipahulu. Please check with the Visitor Centre before making a plan to visit here.