Weather forecast for 10 daysWaikapu, HI

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 86°F
  • 70°F
Mostly Sunny / Wind
Mostly Sunny / Wind
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 22mphNE 40°
  • Humidity: 61%
  • UV index: 10
  • Sunrise: 6:22 am HST
  • Sunset: 5:59 pm HST
  • ▼
On Sunday, in Waikapu, windy and bright weather is also anticipated.
Expected temperatures will peak at a hot 86°F and dip to a minimum of a delightful 69.8°F.
The maximum heat index, which represents the influence of relative humidity on air temperature, is assessed at a hot 91.4°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Tomorrow, the maximum temperature is predicted to be relatively higher than October's climate norm of 79.3°F.
Sunrise will be at 6:22 am and sunset at 5:59 pm; tomorrow's daylight will last for 11h and 37min.

10-day overview

Daily temperatures

Warmest period: tomorrow - Saturday 86°C.
Coldest period: Sunday - Monday 84°C.

Chance of precipitation

Highest chance: Sunday 25.10. 17%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 70°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 12mphNE 39°
  • Humidity: 85%
  • UV index: 0
  • Sunrise: 6:22 am HST
  • Sunset: 6:00 pm HST
  • ▼
  • Sunday
  • Oct 18, 2026
  • 86°F
  • 70°F
Mostly Sunny / Wind
Mostly Sunny / Wind
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 22mphNE 40°
  • Humidity: 61%
  • UV index: 10
  • Sunrise: 6:22 am HST
  • Sunset: 5:59 pm HST
  • ▼
  • Monday
  • Oct 19, 2026
  • 86°F
  • 72°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 20mphNE 42°
  • Humidity: 60%
  • UV index: 10
  • Sunrise: 6:22 am HST
  • Sunset: 5:58 pm HST
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 86°F
  • 68°F
Sunny / Wind
Sunny / Wind
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 20mphNE 44°
  • Humidity: 59%
  • UV index: 10
  • Sunrise: 6:23 am HST
  • Sunset: 5:58 pm HST
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 86°F
  • 68°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 17mphNE 43°
  • Humidity: 59%
  • UV index: 10
  • Sunrise: 6:23 am HST
  • Sunset: 5:57 pm HST
  • ▼
  • Thursday
  • Oct 22, 2026
  • 86°F
  • 70°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 13mphNNE 33°
  • Humidity: 61%
  • UV index: 10
  • Sunrise: 6:24 am HST
  • Sunset: 5:56 pm HST
  • ▼
  • Friday
  • Oct 23, 2026
  • 86°F
  • 72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 13mphNNE 26°
  • Humidity: 64%
  • UV index: 9
  • Sunrise: 6:24 am HST
  • Sunset: 5:55 pm HST
  • ▼
  • Saturday
  • Oct 24, 2026
  • 86°F
  • 72°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 15mphNNE 28°
  • Humidity: 68%
  • UV index: 8
  • Sunrise: 6:25 am HST
  • Sunset: 5:55 pm HST
  • ▼
  • Sunday
  • Oct 25, 2026
  • 84°F
  • 72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 17mphNNE 30°
  • Humidity: 67%
  • UV index: 9
  • Sunrise: 6:25 am HST
  • Sunset: 5:54 pm HST
  • ▼
  • Monday
  • Oct 26, 2026
  • 84°F
  • 72°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 16mphNE 35°
  • Humidity: 66%
  • UV index: 7
  • Sunrise: 6:25 am HST
  • Sunset: 5:54 pm HST
  • ▼
Across the following ten days, a combination of cloud-filled and mostly clear weather is expected.
Rainfall is not anticipated in Waikapu in the upcoming period.
The maximum temperature will be almost identical during the next few days. Expected highs will hover between 84.2°F and 86°F, while fluctuations in the night’s lowest temperature will be also minimal, as night temperatures will lie between 68°F and 71.6°F.
Sunday through next Saturday, with the highest temperature of 86°F, will be the hottest days in Waikapu; with a maximum temperature of 84.2°F, next Sunday and Monday will be the coldest days in Waikapu.
Combining with the humidity, the maximum feel-like temperature may increase and vary between a tropical 89.6°F and a steamy 95°F.
Updated: Oct 18, 2026 @ 09:01:39 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, dry and mostly sunny conditions with blustery winds will continue.

Tomorrow, the highest temperature will be 86°F, while the lowest temperature will be 69.8°F. The maximum heat index, which factors the actual air temperature with the relative humidity, is estimated at 91.4°F.
The highest temperature tomorrow will be a couple of degrees higher than the average maximum temperature in October. The lowest temperature tomorrow will be also a couple of degrees lower than the average low temperature.

On Sunday, in Waikapu, sunrise will be at 6:22 am and sunset at 5:59 pm (HST).

In Waikapu, tomorrow, there will be 11h and 37min of daylight.