Kailua, Big Island weather live forecast

Today's maximum temperature in Kailua, Big Island is expected to be 28°C. Select a day from the live weather forecast for Kailua, Big Island, Hawaii, USA for more weather parameters.

Monday
17th Aug
28

25

4

9
Tuesday
18th Aug
27

25

2

4
Wednesday
19th Aug
28

25

6

7
Thursday
20th Aug
28

25

6

5
Friday
21st Aug
28

25

6

11

5-day weather forecast updated at 04:01 on Monday 17th August 2026 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 Monday 17th August 2026

Expect isolated thunderstorms in Kailua, Big Island, Hawaii with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 54% chance of some rain and a gentle breeze of 15 kph from the west.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
9
UV index (Very High)
54
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
15
kph wind from W

Kailua, Big Island weather for Tuesday 18th August 2026

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 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 53% chance of some rain and a gentle breeze of 15 kph from the south-west.

27
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
4
UV index (Moderate)
53
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
15
kph wind from SW

Kailua, Big Island weather for Wednesday 19th August 2026

Expect isolated thunderstorms in Kailua, Big Island, Hawaii with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 52% chance of some rain and a gentle breeze of 14 kph from the north-west.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
7
UV index (High)
52
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
14
kph wind from NW

Kailua, Big Island weather for Thursday 20th August 2026

Expect isolated thunderstorms in Kailua, Big Island, Hawaii with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 78% chance of some rain and a gentle breeze of 16 kph from the south-east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
5
UV index (Moderate)
78
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
16
kph wind from SE

Kailua, Big Island weather for Friday 21st August 2026

Expect isolated thunderstorms in Kailua, Big Island, Hawaii with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 18 kph from the north-west.