Average Yearly Rainfall for Hawaii





The tables below give yearly averages for rainfall at cities, towns, resorts, parks and beaches in Hawaii.

Each place has a total for the amount of precipitation it usually receives in a year. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The annual precipitation totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

You can jump to a separate table for each island: Hawaii Big Island, Kauai, Lanai, Maui, Molokai and Oahu

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 rainfall data from two stations high on the slopes of mountains: 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 annual rainfall
Days Place Inches Milli­metres
295 Hawaii Volcanoes Park 96.2 2444
273 Hilo 120.4 3058
50 Kailua Kona 9.9 251
281 Kapoho Beach 81.5 2070
56 Mauna Loa Observatory 14.3 363
148 Opihihale 36.2 918
39 Puukohola Heiau 9.0 228

Kauai

Average yearly precipitation
Days Place Inches Milli­metres
67 Barking Sands 17.8 453
259 Kilauea 61.3 1557
193 Lihue 36.2 920
98 Makaweli 23.4 594
266 Princeville Ranch 75.2 1909

Lanai

Yearly averages for total rainfall
Days Place Inches Milli­metres
54 Lanai Airport 15.7 399

Maui

Precipitation information 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 weather station in Haleakala National Park is located 6,959 feet (2,121 metres) up the mountain.

Average amount of rain a year
Days Place Inches Milli­metres
130 Haleakala 42.3 1073
83 Kaanapali 23.3 593
93 Kahului 16.2 412
160 Kapalua 27.8 705
87 Kula 23.0 584
82 Makena State Park 17.2 436
263 Ohe'o Gulch Pools 77.3 1963
83 Puukolii 23.3 593

Molokai

Yearly rainfall totals
Days Place Inches Milli­metres
30 Kaunakakai 12.3 311
106 Molokai Airport 21.7 552

Oahu

Total precipitation for one year
Days Place Inches Milli­metres
86 Ewa Beach 17.1 433
89 Honolulu 16.4 417
192 Kahuku 32.6 828
238 Kaneohe 50.9 1293
123 Waikiki 20.7 525
169 Waimanalo 42.4 1078
260 Waimea Falls Park 52.0 1321
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Hawaii Rainfall
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