Typical September highs at Mauna Kea Beach reach about 86°F, with reliable beach weather most of the year. Mauna Kea Beach is located in South Kohala District, Hawaii.
South Kohala District, Hawaii · live parking & conditions · updated June 19, 2026
In a typical year September is the warmest month here, with highs near 86°F, and it's reliably beach weather most of the year. Tap Mauna Kea Beach on the map for live surf, wind, water temperature, UV and tide times.
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