Average Rainfall for Hawaii in May





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

Each place has a total for the amount of precipitation it usually receives this month. Most sites also have information on the number of days with wet weather. That includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The rainfall totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center.

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 and Opihihale in Kona District on the east coast. Naalehu is at the island's south end, while Puukohola Heiau and Upolu Point are 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 May rainfall
Days Place Inches Milli­metres
26 Hawaii Volcanoes Park 6.4 163
24 Hilo 8.1 206
Kailua Kona 2.0 51
22 Kapoho Beach 4.9 124
Mauna Loa Observatory 1.2 29
Naalehu 2.4 60
15 Opihihale 2.6 67
3 Puukohola Heiau 0.3 9
14 Upolu Point 1.7 43

Kauai

Average monthly precipitation in May
Days Place Inches Milli­metres
20 Kilauea 4.6 118
14 Lihue 2.1 53
6 Makaweli 0.9 24
3 Mana 1.0 25
22 Princeville Ranch 5.1 130
3 Waimea 1.0 24

Lanai

May averages for total rainfall
Days Place Inches Milli­metres
3 Lanai Airport 0.5 13
Lanai City 1.7 42

Maui

Precipitation information for Maui includes Kapalua and Puukolii in West Maui, along with 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 in May
Days Place Inches Milli­metres
10 Haleakala National Park 2.2 55
21 Hana 5.6 142
6 Kahului 0.7 19
11 Kapalua 1.5 38
6 Kula 1.3 34
6 Makena State Park 1.0 26
22 Ohe'o Gulch Pools 5.2 133
Puukolii 1.2 30
9 Wailuku 2.3 57

Molokai

Rainfall totals for May
Days Place Inches Milli­metres
Kalaupapa 2.3 58
Kaunakakai 0.8 20
6 Molokai Airport 1.1 28

Oahu

Total precipitation during May
Days Place Inches Milli­metres
6 Honolulu 0.6 16
16 Kahuku 1.8 46
18 Kaneohe 3.3 83
8 Waikiki 1.0 25
14 Waimanalo 2.3 57
19 Waimea Falls Park 3.5 88
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

Hawaii Rainfall
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