January weather forecast
Hawaii, USA

January in Hawaii marks the middle of its winter season. During this month, temperatures typically range from 65°F (18.3°C) to 79°F (26.1°C). The cooler temperatures in January, compared to December or February, make it one of the chilliest months in Hawaii, although it's mild when juxtaposed with many other regions worldwide.

In terms of precipitation, January is among the wetter months. Notably, Mount Waialeale on Kauai, which records some of the highest average annual rainfall globally, receives a significant portion of its 460" (11684mm) during this period. That said, Hawaii's diverse microclimates mean that while some areas, especially the windward sides, can be experiencing rainfall, leeward areas might have sunny spells simultaneously.

While lowland areas enjoy mild temperatures and occasional showers, higher altitudes, especially on peaks like Mauna Kea and Mauna Loa, might witness snowfall. Though snow in Hawaii might seem counterintuitive given its tropical nature, these high-altitude zones are exceptions, especially during the colder months.

Comparatively, January is slightly cooler and wetter than December and mirrors the weather patterns of February, which also falls in the wet season. However, despite January's rainy disposition, Hawaii's localized weather patterns offer visitors the opportunity to find sunshine, even on days with forecasted rain.

---

• Honolulu - January »
  In Honolulu in January, during 12.6 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. January through June, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Honolulu, Hawaii.
• Hilo - January »
  In Hilo during January, the rain falls for 13.3 days and regularly aggregates up to 2.72" (69mm) of precipitation. In Hilo in January, the average water temperature is 76.6°F (24.8°C).
• Kailua - January »
  The months with the lowest UV index in Kailua are January through June, November and December, with an average maximum UV index of 6. 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 - January »
  January brings refreshing weather to Kaneohe marking the start of a new year with a pleasant mixture of slight humidity and soft sunshine. January, May, June, September and November, with an average relative humidity of 75%, are the least humid months in Kaneohe.
• Kahului - January »
  The months with the lowest humidity in Kahului are January and February, with an average relative humidity of 74%. Being the first month of the year, January in Kahului is characterized by a mild and pleasant weather pattern.
• Ewa Gentry - January »
  January, April through June, August through November, with an average relative humidity of 74%, are the least humid months in Ewa Gentry, Hawaii. January presents a pleasant weather profile for Ewa Gentry, Hawaii, with mild temperatures coupled with an average rainfall of 0.98" (25mm) spread over 12.3 days.
• Kihei - January »
  The months with the lowest humidity in Kihei, Hawaii, are January and February, with an average relative humidity of 74%. On the first day of January in Kihei sunrise is at 7:02 am and sunset at 5:56 pm.
• Wahiawa - January »
  The months with the lowest UV index in Wahiawa are January, February and December, with an average maximum UV index of 5. January's advent in Wahiawa, Hawaii, notes a subtle adjustment in average high-temperature to a still warm 75.9°F (24.4°C) from December.
• Schofield Barracks - January »
  On the first day of January in Schofield Barracks, Hawaii, sunrise is at 7:10 am and sunset at 6:01 pm. January is the month with the most rainfall in Schofield Barracks, with 7.09" (180mm) of accumulated precipitation.
• Wailuku - January »
  In Wailuku in January, during 8.8 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Wailuku, in January, during 8.8 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.