May weather forecast
Hawaii, USA

May in Hawaii truly embraces the summer spirit. Temperatures during this month hover between 70°F (21.1°C) and 84°F (28.9°C), providing warmth without overwhelming heat. The ascension in temperature from April is palpable, making May one of the preferred months for sun-seekers.

Precipitation sees a marked decrease in May, aligning with the onset of Hawaii's dry season. Even traditionally wet regions, such as Mount Waialeale on Kauai, record diminished rainfall. The showers that do occur are often brief and followed by extended sunny intervals, especially in leeward areas. Windward sides, while wetter in comparison, still witness a notable reduction in rain, allowing for more consistent outdoor activities.

Higher altitudes, including Mauna Kea and Mauna Loa, bask under clear skies, making them particularly inviting for adventurers, astronomers, and sightseers. The absence of snow and the clarity of the atmosphere render these regions perfect for stargazing and panoramic vistas.

When compared to April, May exhibits a more pronounced embrace of summer with steadily increasing temperatures and further receding rainfall. As May draws to a close, the promise of June brings with it the height of the dry season, characterized by even warmer days, minimal precipitation, and the gentle caress of the Pacific trade winds.

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• Honolulu - May »
  The months with the lowest humidity are April, May, September and November, with an average relative humidity of 74%. On the last day of the month, in Honolulu sunrise is at 5:48 am and sunset at 7:09 pm HST.
• Hilo - May »
  January, May through July, with an average relative humidity of 78%, are the least humid months in Hilo, Hawaii. In Hilo during May, the rain falls for 20.2 days and regularly aggregates up to 1.38" (35mm) of precipitation.
• Kailua - May »
  An impressive 10.8 hours of sunshine render Kailua's beaches picturesque, with ample weather conditions for water sports. The months with the lowest UV index in Kailua are January through June, November and December, with an average maximum UV index of 6.
• Kaneohe - May »
  January, May, June, September and November, with an average relative humidity of 75%, are the least humid months in Kaneohe, Hawaii. On the first day of May in Kaneohe, Hawaii, sunrise is at 5:59 am and sunset at 6:56 pm.
• Kahului - May »
  On the last day of the month, in Kahului, sunrise is at 5:44 am and sunset at 7:03 pm HST. The months with the lowest UV index in Kahului are January through June, November and December, with an average maximum UV index of 6.
• Ewa Gentry - May »
  The months with the lowest UV index in Ewa Gentry are January through May, October through December, with an average maximum UV index of 6. January through May, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Ewa Gentry.
• Kihei - May »
  The months with the lowest UV index in Kihei are January through June, November and December, with an average maximum UV index of 6. In Kihei in May, it is raining for 8.3 days, with typically 0.43" (11mm) of accumulated precipitation.
• Wahiawa - May »
  In Wahiawa in May, it is raining for 22.7 days, with typically 2.17" (55mm) of accumulated precipitation. In Wahiawa, during the entire year, the rain falls for 252.2 days and collects up to 22.09" (561mm) of precipitation.
• Schofield Barracks - May »
  On the first day of May in Schofield Barracks, sunrise is at 6:00 am and sunset at 6:57 pm. On the last day of May, in Schofield Barracks, sunrise is at 5:49 am and sunset at 7:10 pm HST.
• Wailuku - May »
  January through June, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Wailuku, Hawaii. In Wailuku, Hawaii, in May, it is raining for 8.3 days, with typically 0.43" (11mm) of accumulated precipitation.