Weather forecast for tomorrowWaimalu, HI

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 86°F
  • 73°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 16mphENE 62°
  • Humidity: 62%
  • UV index: 10
  • Sunrise: 6:28 am HST
  • Sunset: 6:04 pm HST
  • ▼
Tomorrow, in Waimalu, a glowing sky and minimal clouds are expected.
The maximum temperature will be a humid 86°F, while the minimum forecasted temperature is a temperate 73.4°F.
The maximum heat index, which measures the combined effect of heat and moisture, is calculated to be a blazing 91.4°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
The temperature is predicted to be moderately higher than the standard October peak of 81.1°F.
Sunrise will be at 6:28 am and sunset at 6:04 pm; tomorrow's daylight will last for 11h and 36min.

Hourly overview

Hourly temperatures

Warmest period: 12 pm - 3 pm 88°C.
Coldest period: 12 am - 3 am 75°C.

Chance of precipitation

Highest chance: 12 am 14%.

Hourly weather forecast

  • 12 am
  • 75°F
  • Feels like:
    75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 14%
  • Precipitation: 0"
  • Wind: 9mphENE 61°
  • Humidity: 80%
  • Pressure: 30.03"Hg
  • Visibility: 8mi
  • UV index: 0
  • ▼
  • 2 am
  • 75°F
  • Feels like:
    75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 9mphENE 57°
  • Humidity: 82%
  • Pressure: 30"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 4 am
  • 75°F
  • Feels like:
    77°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 8mphNE 47°
  • Humidity: 82%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 75°F
  • Feels like:
    77°F
Mostly Clear
Mostly Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 9mphNE 53°
  • Humidity: 81%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 6:28 am
  • 8 am
  • 77°F
  • Feels like:
    82°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 10mphNE 55°
  • Humidity: 73%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 10 am
  • 82°F
  • Feels like:
    86°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 13mphENE 62°
  • Humidity: 61%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 6
  • ▼
  • 12 pm
  • 84°F
  • Feels like:
    88°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 16mphENE 67°
  • Humidity: 54%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 10
  • ▼
  • 2 pm
  • 84°F
  • Feels like:
    88°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 16mphENE 66°
  • Humidity: 52%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 7
  • ▼
  • 4 pm
  • 82°F
  • Feels like:
    86°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 16mphENE 65°
  • Humidity: 60%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 79°F
  • Feels like:
    82°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 14mphENE 64°
  • Humidity: 67%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:04 pm
  • 8 pm
  • 77°F
  • Feels like:
    81°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 11mphENE 62°
  • Humidity: 71%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 77°F
  • Feels like:
    81°F
Mostly Clear
Mostly Clear
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 11mphENE 59°
  • Humidity: 72%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, a combination of dull and sun-filled weather is forecasted.
The temperature will be between a minimum of 73.4°F and a maximum of 84.2°F. The hottest part of the day will be from noon to 3 pm.
Tomorrow, the maximum will be moderately higher than the average high for October. The lowest temperature tomorrow will be also resembling October's average minimum.
Updated: Oct 18, 2026 @ 06:20:35 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, sunshine will take center stage, with just faint traces of clouds.

Tomorrow, the highest temperature will be 86°F, while the lowest temperature will be 73.4°F. The maximum heat index, which measures the combined effect of heat and moisture, is appraised at 91.4°F.
Tomorrow, the highest temperature will be slightly warmer than the average maximum temperature in October. The lowest temperature will be in line with the average low of 74.7°F.

On Sunday, in Waimalu, sunrise will be at 6:28 am and sunset at 6:04 pm (HST).

In Waimalu, the length of the day tomorrow will be 11h and 36min.