Weather forecast for 10 daysWaikapu, HI
Weather forecast for the weekend
Sunday Oct 18, 2026
- 86°F
- 70°F
Sunny / Wind
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 23mphNE 42°
- Humidity: 61%
- UV index: 10
- Sunrise: 6:22 am HST
- Sunset: 5:59 pm HST
- details ▼
Tomorrow, on Sunday, October 18, bright skies and windy conditions will continue.
The temperature will fluctuate from a high of a hot 86°F to a low of a pleasant 69.8°F.
The maximum heat index, which represents the influence of relative humidity on air temperature, is computed to be a blazing 91.4°F. Note that heat index values are valued for light wind and location in the shade.
Tomorrow, the maximum temperature is expected to be moderately higher than the common October peak 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.
The temperature will fluctuate from a high of a hot 86°F to a low of a pleasant 69.8°F.
The maximum heat index, which represents the influence of relative humidity on air temperature, is computed to be a blazing 91.4°F. Note that heat index values are valued for light wind and location in the shade.
Tomorrow, the maximum temperature is expected to be moderately higher than the common October peak 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
Maximum temperature: 86°C.
Minimum temperature: 84°C.
Minimum temperature: 84°C.
Chance of precipitation
Highest chance: Sunday - Monday 24%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 70°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 11mphNE 41°
- Humidity: 85%
- UV index: 0
- Sunrise: 6:22 am HST
- Sunset: 6:00 pm HST
- details ▼
- Sunday
- Oct 18, 2026
- 86°F
- 70°F
Sunny / Wind
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 23mphNE 42°
- Humidity: 61%
- UV index: 10
- Sunrise: 6:22 am HST
- Sunset: 5:59 pm HST
- details ▼
- Monday
- Oct 19, 2026
- 86°F
- 72°F
Sunny / Wind
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 21mphNE 44°
- Humidity: 61%
- UV index: 10
- Sunrise: 6:22 am HST
- Sunset: 5:58 pm HST
- details ▼
- Tuesday
- Oct 20, 2026
- 84°F
- 68°F
Mostly Sunny / Wind
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 21mphNE 46°
- Humidity: 59%
- UV index: 10
- Sunrise: 6:23 am HST
- Sunset: 5:58 pm HST
- details ▼
- Wednesday
- Oct 21, 2026
- 86°F
- 68°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 18mphNE 44°
- Humidity: 59%
- UV index: 10
- Sunrise: 6:23 am HST
- Sunset: 5:57 pm HST
- details ▼
- Thursday
- Oct 22, 2026
- 86°F
- 68°F
Mostly Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 14mphNNE 33°
- Humidity: 61%
- UV index: 10
- Sunrise: 6:24 am HST
- Sunset: 5:56 pm HST
- details ▼
- Friday
- Oct 23, 2026
- 86°F
- 72°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 14mphNNE 27°
- Humidity: 64%
- UV index: 9
- Sunrise: 6:24 am HST
- Sunset: 5:55 pm HST
- details ▼
- Saturday
- Oct 24, 2026
- 86°F
- 72°F
Mostly Cloudy
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 16mphNNE 30°
- Humidity: 68%
- UV index: 8
- Sunrise: 6:25 am HST
- Sunset: 5:55 pm HST
- details ▼
- Sunday
- Oct 25, 2026
- 84°F
- 72°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 18mphNNE 33°
- Humidity: 67%
- UV index: 9
- Sunrise: 6:25 am HST
- Sunset: 5:54 pm HST
- details ▼
- Monday
- Oct 26, 2026
- 84°F
- 72°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 17mphNE 37°
- Humidity: 67%
- UV index: 7
- Sunrise: 6:25 am HST
- Sunset: 5:54 pm HST
- details ▼
Weather patterns suggest that a combination of gloomy and clear weather is forecasted.
Rainfall is not expected in Waikapu in the upcoming days.
The maximum temperature will be very similar throughout the coming week. Highs will range from 84.2°F to 86°F, while changes in the overnight low will be also barely noticeable, as night temperatures will lie between 68°F and 71.6°F.
The hottest days in Waikapu will be Sunday, Monday, Wednesday through next Saturday, with a maximum of 86°F; the coldest days will be Tuesday, next Sunday and Monday, with a maximum of 84.2°F.
Taking the humidity into consideration, the maximum feel-like temperature may increase and vary between a humid 87.8°F and a sizzling 95°F.
Rainfall is not expected in Waikapu in the upcoming days.
The maximum temperature will be very similar throughout the coming week. Highs will range from 84.2°F to 86°F, while changes in the overnight low will be also barely noticeable, as night temperatures will lie between 68°F and 71.6°F.
The hottest days in Waikapu will be Sunday, Monday, Wednesday through next Saturday, with a maximum of 86°F; the coldest days will be Tuesday, next Sunday and Monday, with a maximum of 84.2°F.
Taking the humidity into consideration, the maximum feel-like temperature may increase and vary between a humid 87.8°F and a sizzling 95°F.
Updated: Oct 18, 2026 @ 07:59:19 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, the weather will be sunny and windy.
Tomorrow, the maximum temperature will be 86°F, while the minimum temperature will be 69.8°F. The maximum heat index, which indicates how humid air affects the felt temperature, is calculated to be 91.4°F.
The highest temperature tomorrow will be slightly warmer than the average maximum temperature in October. Tomorrow, the lowest temperature will be also a couple of degrees lower than the average low temperature.
The highest temperature tomorrow will be slightly warmer than the average maximum temperature in October. Tomorrow, the lowest temperature 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).
Tomorrow, the daylight will last for 11h and 37min.





