Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Wailua, Hawaii, starts December with an average high-temperature of a still warm 75.4°F (24.1°C), hinting at a minimal fluctuation from November. The nights of December in Wailua anticipate a slight dip from daytime high temperatures, settling to an average low-temperature of 71.8°F (22.1°C).Humidity
The months with the highest humidity are June through August, October and December, with an average relative humidity of 77%.Rainfall
In Wailua, Hawaii, in December, it is raining for 18.1 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated.Ocean temperature
In Wailua, Hawaii, in December, the average water temperature is 76.6°F (24.8°C).Note: Swimming in 76.6°F (24.8°C) can be enjoyable or not, depending on how you feel about the cold and conditions such as sunshine, wind, and the day's temperature. FYI: Olympic standards dictate waters of 77°F (25°C) to 82.4°F (28°C).
Daylight
With an average of 10h and 48min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:00 am and sunset at 5:53 pm. On the last day of December, in Wailua, Hawaii, sunrise is at 7:16 am and sunset at 6:05 pm HST.
Sunshine
The average sunshine in December in Wailua is 6.4h.UV index
January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Wailua. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In December, the average maximum UV index of 6 translates into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Watch out! Sand and water enhance the UV exposure you receive.
Frequently asked questions
What are the temperatures in Wailua in December?
What are the most humid months in Wailua?
What is the average humidity in December in Wailua?
How much does it rain in Wailua in December?
What is the water temperature in December in Wailua?
What is the month with the shortest days in Wailua?
How many hours of daylight does Wailua have in December?
When are sunrise and sunset in December in Wailua?
How long on average sun shines in December in Wailua?
What is the month with the lowest UV index in Wailua?
How high is the UV index in December in Wailua?
Average temperature in December
Wailua, HI
- Average high temperature in December: 75.4°F
The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).
- Average low temperature in December: 71.8°F
The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in December
Wailua, HI
- Average pressure in December: 30.01"Hg
The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).
Average wind speed in December
Wailua, HI
- Average wind speed in December: 11.2mph
The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).
Average humidity in December
Wailua, HI
- Average humidity in December: 77%
The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).
Average rainfall in December
Wailua, HI
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").
Average rainfall days in December
Wailua, HI
- Average rainfall days in December: 18.1 days
The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in December
Wailua, HI
- Average sea temperature in December: 76.6°F
The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (74.8°F).
Average daylight in December /
Average sunshine in December
Wailua, HI
- Average daylight in December: 10h and 5min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in December
Wailua, HI
- Average sunshine days in December: 6.7 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).
Average UV index in December
Wailua, HI
- Average UV index in December: 6
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover in December
Wailua, HI
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).
Average visibility in December
Wailua, HI
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Wailua, Hawaii, USA
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