Weather in Kauai Island, United States in December

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Visiting Kauai Island, United States in December

The weather in December is marginally cooler than the previous month and temperatures continue to drop slightly into January. December has average maximum temperatures of 26°C (79°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 46.8% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.1 hours of sunshine per day. It is not an optimal time for sunbathing but it is possible on clearer days in Kauai Island.

December has total rainfall of 13.8cm (5.4inches) making it a bit rainy but with only moderate tropical showers. There are 17.8 days with some rainfall so you can still enjoy the beach on the clear days.

Sea temperatures are a warm 25°C (76°F). December is a good month for swimming in Kauai Island with comfortable temperatures for most people. The sea temperature in December is slightly cooler than the previous month.

Consider visiting Kauai Island in the months of April, May, August, September, for the best beach weather. Also consider one of our other suggestions for December.

Can you sunbathe in Kauai Island in December?

Yes, December is not an optimal time for sunbathing but it is possible on clearer days in Kauai Island.

December has average maximum temperatures of 26°C (79°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 46.8% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.1 hours of sunshine per day. December has total rainfall of 13.8cm (5.4inches) making it a bit rainy but with only moderate tropical showers. There are 17.8 days with some rainfall so you can still enjoy the beach on the clear days.

More about December temperature and sunshine.

Can you swim in Kauai Island in December?

Yes, December is a good month for swimming in Kauai Island with warm sea temperatures 25°C (76°F).

More about December sea temperatures.

Is December a good time to holiday in Kauai Island?

Yes, December is a good time for a holiday in Kauai Island.

December has average maximum temperatures of 26°C (79°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 46.8% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.1 hours of sunshine per day. December has total rainfall of 13.8cm (5.4inches) making it a bit rainy but with only moderate tropical showers. There are 17.8 days with some rainfall so you can still enjoy the beach on the clear days. It is not an optimal time for sunbathing but it is possible on clearer days in Kauai Island. Sea temperatures are a warm 25°C (76°F). December is a good month for swimming in Kauai Island with comfortable temperatures for most people.

More about the December temperatures and sunshine.

Is Kauai Island warm in December?

Yes, Kauai Island is very warm and perfect for sunbathing on clear days in December.

The average maximum temperature in Kauai Island in December is 26°C (79°F). The average maximum temperature is 27°C (81°) in the previous month and 26°C (78°F) in the next month.

The average temperature in Kauai Island in December is 23°C (74°F). The average temperature is 24°C (76°F) in the previous month and 22°C (72°F) in the next month.

More info about the December temperatures and sunshine.

How sunny is Kauai Island in December?

The average day light hours per day in Kauai Island in December are 10.8. The sunshine percentage is 46.8% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.1 hours of sunshine per day.

More about December sunshine.

Temperature in Kauai Island in December

The weather in December is marginally cooler than the previous month and temperatures continue to drop slightly into January. The average maximum temperature in Kauai Island in December is 26°C (79°F). The average maximum temperature is 27°C (81°F) in the previous month and 26°C (78°F) in the next month.

The average temperature in Kauai Island in December is 23°C (74°F). The average temperature is 24°C (76°F) in the previous month and 22°C (72°F) in the next month.

The average minimum temperature in Kauai Island in December is 20°C (68°F). The minimum temperature is 21°C (70°F) in the previous month and 19°C (67°F) in the next month.

Sunshine in Kauai Island in December

The days in December are slightly shorter than the previous month. December has slightly less hours of sunshine than the previous month. During December the average day light hours are 10.8 per day in Kauai Island. The sunshine percentage is 46.8% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.1 hours of sunshine per day.

The ultraviolet index in Kauai Island in December is typically 6.2 during December. An ultraviolet index reading of 6 to 7 indicates a high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 20 minutes. Protection against skin and eye damage is needed. Tanning will be safest before 10am and after 4pm. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Kauai Island in December

The average sea water temperature in Kauai Island in December is 24.7°C (76.5°F) which is warm and pleasant for relaxing and swimming for long periods. The sea temperature in December is slightly cooler than the previous month.

Rainfall in Kauai Island in December

December weather is slightly wetter than the previous month. December has a few more days of rain than the previous month. The average total rainfall in Kauai Island in December is 13.8cm (5.4inches) and on average there are 17.8 rainy days in December making it a wet time to visit the beach.

Humidity in Kauai Island in December

The maximum dew point (an indicator of humidity) in Kauai Island in December is 20°C (68°F) which is somewhat uncomfortable for most people in cities but fine on a beach. The dew point is 21°C (69°F) in the previous month and 19°C (19°F) in the next month.

The average maximum relative humidity in Kauai Island in December is typically 86.6%. The maximum relative humidity is 84.9% in the previous month and 86.1% in the next month.

The average relative humidity in Kauai Island in December is typically 74.8%. The average relative humidity is 72.9% in the previous month and 73.8% in the next month.

Wind Speed in Kauai Island in December

The average maximum wind speed in Kauai Island in December is typically 29KM/H (18MPH). The average maximum wind speed is 29KM/H (18MPH) in the previous month and 30KM/H (18MPH) in the next month.

The average wind speed in Kauai Island in December is typically 16KM/H (10MPH). The average wind speed is 17KM/H (10MPH) in the previous month and 16KM/H (10MPH) in the next month.

The average wind direction in Kauai Island in December is from the North-Northeast.

Monthly Averages

Suggested Beaches in December

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.