Average Rainfall for Hawaii in December

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The tables below give monthly averages for rainfall during December 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 December rainfall
Days Place Inches Millimetres
24 Hawaii Volcanoes Park 12.1 306
21 Hilo 11.6 294
  – Kailua Kona   2.8   72
23 Kapoho Beach   7.9 200
  – Mauna Loa Observatory   3.4   85
  – Naalehu   5.6 143
  8 Opihihale   2.9   73
  4 Puukohola Heiau   2.0   50
15 Upolu Point   3.8   98

Kauai

Average monthly precipitation in December
Days Place Inches Millimetres
19 Kilauea   8.0 202
18 Lihue   5.2 132
10 Makaweli   4.6 116
  6 Mana   4.6 118
20 Princeville Ranch   8.1 206
  6 Waimea   4.3 109

Lanai

December averages for total rainfall
Days Place Inches Millimetres
  4 Lanai Airport   2.2   57
  – Lanai City   4.1 104

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 December
Days Place Inches Millimetres
12 Haleakala National Park   7.5 189
20 Hana   7.0 177
11 Kahului   3.4   85
14 Kapalua   4.6 116
  7 Kula   3.6   92
  7 Makena State Park   3.2   80
21 Ohe'o Gulch Pools   7.9 200
  – Puukolii   3.9   98
12 Wailuku   4.7 119

Molokai

Rainfall totals for December
Days Place Inches Millimetres
  – Kalaupapa   5.5 139
  – Kaunakakai   2.9   73
11 Molokai Airport   4.3 109

Oahu

Total precipitation during December
Days Place Inches Millimetres
10 Honolulu   3.2   82
17 Kahuku   5.0 128
19 Kaneohe   6.3 161
13 Waikiki   4.0 102
18 Waimanalo   6.1 154
22 Waimea Falls Park   6.3 161
Reference

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

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