Kauai Island (HI)
December
Weather in Kauai Island, Hawaii for December 2025
Your guide to Kauai Island weather in December - trends and predictions
Until now, December 2025 in Kauai Island has been nearly identical to the historical average, with a temperature of 24.2 °F (showing only a slight deviation of -0.3 °F).
The forecast for the next days in Kauai Island predicts temperatures to be around 24 °F, close to the historical average.
In general, the average temperature in Kauai Island at the beginning of December is 24.6 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 23.9 °F by the end of December.
Kauai Island in December brings notable rainfall, with an average of 17 rainy days and a total precipitation of 57.8 mm.
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Temperatures
Rain 🌧️
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14
Dry days
17
Rainy days
0
Snow days
24°/22°
Temperatures
20 km/h
Avg max wind
75 %
Avg humidity
Kauai Island Weather December
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Temperatures trend during December in Kauai Island
See the weather trend as well as the moving average line
December weather in Kauai Island day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Patchy rain possible | 24° /21° | 0 mm | 5 | |
| Dec. 2 |  Partly cloudy | 25° /21° | 0 mm | 6 | |
| Dec. 3 |  Sunny | 25° /21° | 0 mm | 6 | |
| Dec. 4 | Patchy rain possible | 25° /21° | 1.3 mm | 6 | |
| Dec. 5 |  Moderate or heavy rain shower | 24° /22° | 10.8 mm | 5 | |
| Dec. 6 | Light rain shower | 24° /22° | 2.3 mm | 5 | |
| Dec. 7 | Patchy rain possible | 25° /22° | 1.4 mm | 6 | |
| Dec. 8 | Patchy rain possible | 24° /22° | 0.6 mm | 5 | |
| Dec. 9 | Light rain shower | 24° /22° | 1.6 mm | 5 | |
| Dec. 10 | Light rain shower | 24° /21° | 1.9 mm | 5 | |
| Dec. 11 | Patchy rain possible | 24° /22° | 0.9 mm | 5 | |
| Dec. 12 | Patchy rain possible | 24° /21° | 0.7 mm | 6 | |
| Dec. 13 | Patchy rain possible | 25° /22° | 1.8 mm | 6 | |
| Dec. 14 | Patchy rain possible | 24° /22° | 2.9 mm | 5 | |
| Dec. 15 | Patchy rain possible | 24° /22° | 3.3 mm | 5 | |
| Dec. 16 | Patchy rain possible | 25° /22° | 0.7 mm | 6 | |
| Dec. 17 | Sunny | 25° /21° | 1.2 mm | 7 | |
| Dec. 18 | Sunny | 25° /22° | 4.8 mm | 6 | |
| Dec. 19 | Patchy rain possible | 25° /22° | 2.1 mm | 6 | |
| Dec. 20 | Patchy rain possible | 24° /22° | 0.6 mm | 5 | |
| Dec. 21 | Patchy rain possible | 26° /22° | 2 mm | 1.2 | |
| Dec. 22 |  Moderate rain | 25° /21° | 7 mm | 1.3 | |
| Dec. 23 | Patchy rain possible | 24° /21° | 1.9 mm | 1 | |
| Dec. 24 | Patchy rain possible | 24° /20° | 1.2 mm | 0.8 | |
| Dec. 25 | Patchy rain possible | 24° /19° | 0.2 mm | 0 | |
| Dec. 26 | Patchy rain possible | 24° /20° | 0.1 mm | 5 | |
| Dec. 27 | Patchy rain possible | 24° /20° | 0.1 mm | 5 | |
| Dec. 28 | Patchy rain possible | 24° /20° | 0.3 mm | 5 | |
| Dec. 29 | Patchy rain possible | 25° /19° | 0.2 mm | 5 | |
| Dec. 30 | Patchy rain possible | 24° /20° | 1.1 mm | 5 | |
| Dec. 31 | Moderate rain | 22° /20° | 6.1 mm | 5 | |
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Important Notice
Our weather forecast for Kauai Island in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Kauai Island forecast closer to your planned date for the most up-to-date weather information.
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Kauai Island in December - FAQ
What are the expected maximum and minimum temperatures in Kauai Island during December?
During December, expect a variety of temperatures with highs around 24° and lows near 22°, suitable for diverse activities and preferences.
How much rainfall should be expected in Kauai Island during December?
Moderate rainfall is anticipated in Kauai Island during December, with a total of 57.8 mm spread over approximately 17 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Kauai Island during December?
The average wind speed in Kauai Island during December is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Kauai Island
Explore the daily rainfall trends and prepare for Kauai Islands December weather 💧
Typically, Kauai Island has 17 rainy days in December with a total of 57.8 mm of rainfall.
UV exposure in Kauai Island during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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