2012 Long-Range Weather Forecast for Kalaoa, Hawaii

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(Nov. 2011 - Oct. 2012)

Complete 2012 Long-Range Weather Forecast for the Hawaii Region, November 2011 to October 2012 includes week-by-week details.

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Free 2-Month Weather Forecast

MAY 2012: temperature 79° (2° above avg.); precipitation 2.5" (1.5" above avg.); May 1-2: Showers, seasonable; May 3-7: Heavy rain east, sunny central and west; warm; May 8-15: Sunny, hot east; scattered showers, seasonable central and west; May 16-22: Scattered showers, warm; May 23-31: Scattered showers; very warm east, cool west.

JUNE 2012: temperature 80.5° (1° above avg.); precipitation 2" (1.5" above avg.); Jun 1-4: Scattered showers, seasonable; Jun 5-15: Daily showers, warm east; sunny, seasonable, then warm central and west; Jun 16-21: Widely separated showers, warm; Jun 22-24: Heavy showers, cool; Jun 25-29: Widely separated showers, seasonable; Jun 30: Heavy showers, seasonable.

Annual Weather Summary: November 2011 to October 2012

Winter season temperatures will range from about 1 degree above normal, on average, on the Big Island to normal on Oahu to slightly below normal on Kauai and Nihue. The coolest periods will occur in mid- and late December, early January, and early April. Winter rainfall will be much above normal on the eastern islands and much below in the west.

April and May will be rainier than normal, with temperatures above normal on the Big Island and Maui and near normal elsewhere.

Summer season rainfall and temperatures will be above normal, with the hottest periods in mid-June, mid- and late July, and late August.

September and October temperatures will be slightly below normal on the Big Island and above normal elsewhere, with especially hot weather in the first half of September and other warm periods in mid- to late September and mid-October. Rainfall will be below normal on Nihue and Kauai, near normal on Oahu, and above normal elsewhere.

NOTE: Temperature variations in Hawaii are largely elevation-based, with higher elevations noticeably cooler than elevations closer to sea level. Precipitation often varies tremendously throughout the islands, even at similar elevations. For example, Hilo, at an elevation of 31 feet above sea level, averages more than 130 inches of rain per year, while Honolulu, at a similar elevation (7 feet), averages only about 20 inches of rain per year. Because there is so much variation in rainfall, we have based the forecast on the Honolulu-Waikiki area and expressed only general trends elsewhere throughout the islands. Thus, for example, the forecast does note a widespread rain, but not a locally heavy rainfall.

Temperature and Precipitation November 2011 to October 2012

See Long-Range Weather Forecasts for major cities in Hawaii.