Hawaii Temperatures in August

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Typical temperatures for cities, towns, parks and beaches across the Hawaiian Islands during the month of August 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 1981 to 2010 by the US National Climatic Data Center.

Island of Hawaii (Big Island)

Places with weather information on Hawaii's Big Island include Kainaliu, Kailua Kona and Captain Cook in South Kona; Naalehu at the island's south end; 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 August temperatures
High °F Low °F Place High °C Low °C
81 72 Captain Cook 27 22
73 56 Hawaii Volcanoes Park 23 13
83 70 Hilo 28 21
87 75 Kailua Kona 31 24
79 65 Kainaliu 26 18
58 40 Mauna Loa Observatory 14   5
82 68 Naalehu 28 20
79 64 Opihihale 26 18
84 70 Puukohola Heiau 29 21
87 72 Upolu Point 30 22

Kauai

Average daily temperatures for August
High °F Low °F Place High °C Low °C
84 71 Kilauea 29 22
85 75 Lihue 29 24
87 71 Mahaulepu 30 22
87 72 Makaweli 31 22
85 69 Princeville Ranch 30 21
88 70 Waimea 31 21
83 67 Wainiha 28 19

Lanai

August temperature averages
High °F Low °F Place High °C Low °C
84 67 Lanai Airport 29 19

Maui

Temperature records for Maui include Lahaina 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 August
High °F Low °F Place High °C Low °C
66 49 Haleakala National Park 19   9
83 72 Hana 28 22
88 71 Kahului 31 22
85 72 Kapalua 30 22
76 58 Kula 25 15
88 72 Lahaina 31 22
78 69 Makena State Park 25 21
83 72 Ohe'o Gulch Pools 28 22
87 71 Puukolii 30 21

Molokai

Average daily temperatures for August
High °F Low °F Place High °C Low °C
84 70 Halawa 29 21
86 71 Molokai Airport 30 22

Oahu

Average August temperatures
High °F Low °F Place High °C Low °C
89 75 Honolulu 32 24
84 73 Kahuku 29 23
86 74 Kaneohe 30 24
88 74 Waikiki 31 23
85 74 Waimanalo 30 23
88 69 Waimea Falls Park 31 21
Reference

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

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