Average Rainfall for Hawaii in September





The tables below give monthly averages for rainfall during September 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 September rainfall
Days Place Inches Milli­metres
24 Hawaii Volcanoes Park 6.2 158
24 Hilo 9.9 252
Kailua Kona 0.8 21
23 Kapoho Beach 7.4 188
Mauna Loa Observatory 1.8 46
Naalehu 4.0 103
15 Opihihale 4.0 102
3 Puukohola Heiau 0.6 15
13 Upolu Point 1.8 45

Kauai

Average monthly precipitation in September
Days Place Inches Milli­metres
22 Kilauea 4.4 112
16 Lihue 2.1 54
8 Makaweli 0.9 23
4 Mana 1.0 24
23 Princeville Ranch 5.7 144
4 Waimea 0.8 21

Lanai

September averages for total rainfall
Days Place Inches Milli­metres
4 Lanai Airport 0.9 24
Lanai City 1.5 37

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 September
Days Place Inches Milli­metres
13 Haleakala National Park 2.4 60
22 Hana 6.8 173
5 Kahului 0.4 10
11 Kapalua 0.9 23
6 Kula 1.2 29
7 Makena State Park 0.8 21
24 Ohe'o Gulch Pools 6.9 176
Puukolii 0.9 24
9 Wailuku 1.2 31

Molokai

Rainfall totals for September
Days Place Inches Milli­metres
Kalaupapa 1.5 38
Kaunakakai 0.4 9
6 Molokai Airport 0.8 19

Oahu

Total precipitation during September
Days Place Inches Milli­metres
7 Honolulu 0.7 18
17 Kahuku 2.5 64
22 Kaneohe 3.7 93
9 Waikiki 1.0 26
14 Waimanalo 2.3 57
20 Waimea Falls Park 2.8 70
Reference

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

Hawaii Rainfall
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