December weather forecast
Hawaii, USA

Hawaii's December is a confluence of the wet season's peak and the gentle commencement of winter. Temperatures hover in a comfortable bracket, ranging from 68°F (20°C) to 81°F (27.2°C). The days are slightly shorter, and the chill in the evening air becomes more palpable, particularly in the higher altitudes.

December witnesses substantial rainfall, with Mount Waialeale on Kauai continuing its legacy of recording impressive precipitation figures. The windward sides, already flourishing from previous months' showers, are frequently caressed by rain, especially during afternoon hours. Leeward regions, while experiencing bouts of rain, often unveil sun-dappled mornings, allowing beachgoers to soak in some warmth.

Areas of elevation, such as Mauna Kea and Mauna Loa, begin to hint at potential snowfall. The nights turn colder, with temperatures occasionally approaching freezing levels at the summits. Stargazers, while challenged by sporadic cloud covers, are treated to pristine skies on clearer nights, making December's celestial canvas a visual treat.

In comparison to November, December retains the wet trend but introduces cooler nuances to the climate palette. The Pacific hurricane season officially concludes, allowing the archipelago to focus on the evolving winter pattern. As December winds down, Hawaii stands at the cusp of a new year, ready to cycle through its diverse climatic phases once more.

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• Honolulu - December »
  November and December, with an average of 6.5h of sunshine, are months with the least sunshine in Honolulu, Hawaii. January through June, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Honolulu.
• Hilo - December »
  In Hilo in December, it is raining for 18.4 days, with typically 2.64" (67mm) of accumulated precipitation. The beginning of December in Hilo reveals an average high-temperature of a still pleasant 71.6°F (22°C), showing minimal deviation from the previous month.
• Kailua - December »
  April, June through August and December, with an average relative humidity of 76%, are the most humid months in Kailua, Hawaii. In Kailua in December, it is raining for 14.9 days, with typically 1.57" (40mm) of accumulated precipitation.
• Kaneohe - December »
  The months with the highest humidity in Kaneohe are February through April, July, August, October and December, with an average relative humidity of 76%. February through April, July, August, October and December, with an average relative humidity of 76%, are the most humid months in Kaneohe.
• Kahului - December »
  January through June, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Kahului, Hawaii. With an average of 7h of sunshine, December has the least sunshine of the year in Kahului, Hawaii.
• Ewa Gentry - December »
  The month with the shortest days in Ewa Gentry is December, with an average of 10h and 54min of daylight. With an average relative humidity of 76%, December is the most humid month in Ewa Gentry, Hawaii.
• Kihei - December »
  December in Kihei, Hawaii, presents a mild winter weather, enjoying cooler temperatures and an increase in rainfall to 0.87" (22mm). On the first day of December in Kihei, Hawaii, sunrise is at 6:46 am and sunset at 5:43 pm.
• Wahiawa - December »
  The month with the shortest days in Wahiawa, Hawaii, is December, with an average of 10h and 48min of daylight. The months with the lowest UV index in Wahiawa are January, February and December, with an average maximum UV index of 5.
• Schofield Barracks - December »
  Schofield Barracks commences December with an average high-temperature of a still moderately hot 78.4°F (25.8°C), maintaining a close resemblance to the previous month. On the last day of December, in Schofield Barracks, sunrise is at 7:10 am and sunset at 6:01 pm HST.
• Wailuku - December »
  The months with the most rainfall in Wailuku are March and December, with an average 0.87" (22mm) of precipitation. In Wailuku, Hawaii, during December, the rain falls for 9.2 days and regularly aggregates up to 0.87" (22mm) of precipitation.