Kauai County weather

Our guide to the weather in Kauai County during December

25

Average high

5

UV Index

104mm

Monthly rainfall

77%

Humidity

We've looked at the most up-to-date weather data for Kauai County, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Kauai County weather in December.

How warm is it in Kauai County during December?

The temperature is extremely stable in December with average highs of 25℃ and lows just 2℃ lower at 22℃. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Kauai County during December?

On average, there will be 4 rainy days during the month, amounting to 104.4mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Kauai County during December?

You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during December. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.

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Kauai County Blog posts

From the UK's most popular travel bloggers

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The most unforgettable things to do in Kauai

21st January 2021 by PommieTravels

The island of Kauai in Hawaii is the fourth largest and second-oldest, geographically speaking, of the Hawaiian islands. Stretching 169 kilometres across, it ranks as the 21st largest island in the United States of America. It is home to the Waimea Canyon State Park, also known as the Grand Canyon of the Pacific. The Park features Mount Wai’ale’ale, which receives extreme amounts of rainfall and is recorded as one of the wettest places on earth. Kauai is also known as the “Garden...

Weather in Kauai County

Our month-by-month guide to the weather and climate in Kauai County

24.0

Kauai County weather in

January
23.6

Kauai County weather in

February
23.5

Kauai County weather in

March
24.3

Kauai County weather in

April
25.4

Kauai County weather in

May
26.2

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June
26.7

Kauai County weather in

July
27.0

Kauai County weather in

August
27.2

Kauai County weather in

September
26.8

Kauai County weather in

October
25.6

Kauai County weather in

November
24.5

Kauai County weather in

December