Kailua, Big Island weather live forecast

Today's maximum temperature in Kailua, Big Island is expected to be 27°C. Select a day from the live weather forecast for Kailua, Big Island, Hawaii, USA for more weather parameters.

• Friday
  15th Aug
  27
  22
  
  3
  4
• Saturday
  16th Aug
  29
  22
  
  3
  4
• Sunday
  17th Aug
  28
  22
  
  4
  4
• Monday
  18th Aug
  27
  22
  
  5
  4
• Tuesday
  19th Aug
  28
  22
  
  3
  10

5-day weather forecast updated at 04:01 on Friday 15th August 2025 GMT

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The 5-day weather forecast for Hawaii (Kailua, Big Island) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Kailua, Big Island weather forecast by day

Below are the detailed weather forecasts for Kailua, Big Island for the next 5 days.

Kailua, Big Island weather for Friday 15th August 2025

Expect mostly cloudy with light rain in Kailua, Big Island, Hawaii with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 21% chance of some rain and a gentle breeze of 19 kph from the south-west.

• 27
  °C maximum temperature
• 22
  °C minimum temperature
• 
  mostly cloudy with light rain
• 3
  hours of sunshine
• 4
  UV index (Moderate)
• 21
  % chance of some rain
• <2
  mm of rainfall expected
• L
  low heat & humidity
• 19
  kph wind from SW

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Kailua, Big Island weather for Saturday 16th August 2025

Expect mostly cloudy with light rain in Kailua, Big Island, Hawaii with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 18 kph from the west.

• 29
  °C maximum temperature
• 22
  °C minimum temperature
• 
  mostly cloudy with light rain
• 3
  hours of sunshine
• 4
  UV index (Moderate)
• 25
  % chance of some rain
• <2
  mm of rainfall expected
• M
  moderate heat & humidity
• 18
  kph wind from W

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Kailua, Big Island weather for Sunday 17th August 2025

Expect mostly cloudy with light rain in Kailua, Big Island, Hawaii with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 62% chance of some rain and a gentle breeze of 19 kph from the south-west.

• 28
  °C maximum temperature
• 22
  °C minimum temperature
• 
  mostly cloudy with light rain
• 4
  hours of sunshine
• 4
  UV index (Moderate)
• 62
  % chance of some rain
• <2
  mm of rainfall expected
• L
  low heat & humidity
• 19
  kph wind from SW

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Kailua, Big Island weather for Monday 18th August 2025

Expect isolated thunderstorms in Kailua, Big Island, Hawaii with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 67% chance of some rain and a gentle breeze of 16 kph from the west.

• 27
  °C maximum temperature
• 22
  °C minimum temperature
• 
  isolated thunderstorms
• 5
  hours of sunshine
• 4
  UV index (Moderate)
• 67
  % chance of some rain
• <5
  mm of rainfall expected
• L
  low heat & humidity
• 16
  kph wind from W

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Kailua, Big Island weather for Tuesday 19th August 2025

Expect mostly cloudy with light rain in Kailua, Big Island, Hawaii with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 10 (Very High) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 40% chance of some rain and a gentle breeze of 17 kph from the south-west.

• 28
  °C maximum temperature
• 22
  °C minimum temperature
• 
  mostly cloudy with light rain
• 3
  hours of sunshine
• 10
  UV index (Very High)
• 40
  % chance of some rain
• <5
  mm of rainfall expected
• L
  low heat & humidity
• 17
  kph wind from SW

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Metric (°C / mm)  |  Imperial (°F / inches)

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