Kailua, Big Island weather live forecast

Today's maximum temperature in Kailua, Big Island is expected to be 29°C. Select a day from the live weather forecast for Kailua, Big Island, Hawaii, USA for more weather parameters.

Thursday
18th Dec
29

21

6

6
Friday
19th Dec
29

22

7

5
Saturday
20th Dec
29

22

5

5
Sunday
21st Dec
29

22

3

3
Monday
22nd Dec
28

21

3

6

5-day weather forecast updated at 04:01 on Thursday 18th December 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 Thursday 18th December 2025

Expect isolated thunderstorms in Kailua, Big Island, Hawaii with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 30% chance of some rain and a gentle breeze of 14 kph from the south-west.

29
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
30
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from SW

Kailua, Big Island weather for Friday 19th December 2025

Expect scattered clouds in Kailua, Big Island, Hawaii with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.

29
°C maximum temperature
22
°C minimum temperature
scattered clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
M
moderate heat & humidity
14
kph wind from W

Kailua, Big Island weather for Saturday 20th December 2025

Expect sunshine and showers in Kailua, Big Island, Hawaii with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 68% chance of some rain and a gentle breeze of 15 kph from the south-east.

29
°C maximum temperature
22
°C minimum temperature
sunshine and showers
5
hours of sunshine
5
UV index (Moderate)
68
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from SE

Kailua, Big Island weather for Sunday 21st December 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 3 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 26% 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
3
UV index (Moderate)
26
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from W

Kailua, Big Island weather for Monday 22nd December 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 6 (High) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 26% chance of some rain and a gentle breeze of 16 kph from the south.