September Temperatures in Hawaii

Typical temperatures for cities, towns, parks and beaches across the Hawaiian Islands during the month of September are listed below in degrees Fahrenheit and Celsius.

You'll find separate tables for each island: Hawaii (Big Island), Kauai, Lanai, Maui, Molokai and Oahu.

The tables give the normal maximum and minimum daily temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Island of Hawaii (Big Island)

Places with weather information on Hawaii's Big Island include Kailua Kona in South Kona and Puukohola Heiau in the Kohala region at the north end. Plus there are records from two stations high on the mountain slopes where temperatures are cooler, the Hawaii Volcanoes Park Visitor Center at 3,970 feet (1,210 metres) and the Mauna Loa Slope Observatory at 11,152 feet (3,399 metres) elevation.

Average September temperatures
High °F	Low °F	Place	High °C	Low °C
73	55	Hawaii Volcanoes Park	23	13
83	70	Hilo	29	21
87	75	Kailua Kona	31	24
57	41	Mauna Loa Observatory	14	5
77	63	Opihihale	25	17
88	75	Puukohola Heiau	31	24

Kauai

Normal daily temperatures for September
High °F	Low °F	Place	High °C	Low °C
87	72	Barking Sands	31	22
84	71	Kilauea	29	22
85	75	Lihue	30	24
89	73	Mahaulepu	31	23
87	72	Makaweli	31	22
85	70	Princeville Ranch	29	21
87	69	Waimea	31	21

Lanai

September temperature averages
High °F	Low °F	Place	High °C	Low °C
83	67	Lanai Airport	28	19

Maui

Temperature records for Maui include Kaanapali and Kapalua in West Maui, Makena on the South Shore, and Hana and Ohe'o Gulch Pools at the island's east end. The Haleakala weather station, at 6,960 feet (2,121 metres) elevation, is higher and cooler than the rest.

Normal temperatures for September
High °F	Low °F	Place	High °C	Low °C
65	48	Haleakala	18	9
83	70	Hana	28	21
85	70	Kaanapali	29	21
90	71	Kahului	32	22
87	72	Kapalua	30	22
75	59	Kula	24	15
78	69	Makena State Park	26	21
83	72	Ohe'o Gulch Pools	28	22
85	70	Puukolii	29	21

Molokai

Average September temperatures
High °F	Low °F	Place	High °C	Low °C
84	71	Halawa	29	22
87	73	Molokai Airport	30	23

Oahu

Average daily temperatures in September
High °F	Low °F	Place	High °C	Low °C
87	70	Ewa Beach	31	21
88	75	Honolulu	31	24
83	74	Kahuku	28	23
85	74	Kaneohe	30	23
88	74	Waikiki	31	23
85	74	Waimanalo	30	23
86	70	Waimea Falls Park	30	21

Hawaii Temperatures in September