Long-Range Weather Forecast for Kailua, HI

May 2026 Long Range Weather Forecast for Hawaii

Dates	Weather Conditions
May 1-8	Showers E&W, sunny C; warm
May 9-11	Rain, heavy W; sunny C; warm
May 12-19	Daily showers, warm
May 20-23	Showers, heavy W; warm
May 24-31	Scattered showers, warm
May	temperature 78.5° (3° above avg. E, avg. W) precipitation 2.4" (avg. E&C, 5" above W)

June 2026 Long Range Weather Forecast for Hawaii

Dates	Weather Conditions
Jun 1-8	Showers, isolated C; warm E&C, mild W. 9-18 Scattered showers E&W, sunny C; warm, mild W. 19-24 Showers east, sunny C&W; warm
Jun 25-30	Showers; warm E, mild C&W.
June	temperature 80° (2° above avg. E, 1° below W) precipitation 2.1" (2" above avg. E&W, 1" above C)

12-Month Long-Range Weather Outlook

November 2025 to October 2026

Winter will be warmer than normal, with the coolest periods in late November, late January into early February, and mid-March. Rainfall will be below normal with the stormiest periods in early and late November, early December, mid-February, and mid- to late March. April and May will be warmer than normal, with below-normal rainfall in the east and above-normal central and west. Summer will be warmer than usual, with the hottest periods in mid- to late June and mid-August. Rainfall will be below normal in the east, above normal central and west. September and October will be cooler than normal, with the hottest period in early to mid-September. Rainfall will be above normal. Watch for a tropical storm in mid-September.

See the complete 12-month weather forecast in The Old Farmer’s Almanac..

Weather Trend Graph

November 2025 to October 2026