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
Waialua marks the onset of December with an average high-temperature of a still warm 76.6°F (24.8°C), a subtle shift from November's 78.8°F (26°C). The temperature during December nights demonstrates a small drop from the daytime highs, settling to an average of 71.2°F (21.8°C).Humidity
February and December, with an average relative humidity of 76%, are the most humid months.Rainfall
In Waialua, Hawaii, in December, it is raining for 14.5 days, with typically 1.06" (27mm) of accumulated precipitation. In Waialua, during the entire year, the rain falls for 190.2 days and collects up to 11.65" (296mm) of precipitation.Ocean temperature
In Waialua, Hawaii, the average seawater temperature in December is 76.6°F (24.8°C).Note: Consideration of an individual's cold resistance, combined with conditions like sunshine, wind, and temperature, suggests that swimming in 76.6°F (24.8°C) water can be delightful. (Olympic swimming is usually in 77°F (25°C) to 82.4°F (28°C) water.)
Daylight
With an average of 10h and 48min of daylight, December has the shortest days of the year in Waialua, Hawaii.On the first day of December in Waialua, sunrise is at 6:54 am and sunset at 5:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:01 pm HST.
Sunshine
In December, the average sunshine is 6.3h.UV index
The months with the lowest UV index are January through June, August, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a daily UV index of 6 turns into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Attention! UV strength is notably upped by the reflection of sand and water.
Frequently asked questions
What is the average December temperature in Waialua?
What is the most humid month in Waialua?
What is the average humidity in December in Waialua?
How many days does it rain in December in Waialua?
What is the ocean temperature in December in Waialua?
What is the month with the shortest days in Waialua?
How many hours of daylight does Waialua have in December?
What time are sunrise and sunset in December in Waialua?
How long on average sun shines in December in Waialua?
When is the lowest UV index in Waialua?
What is the UV index reading in December in Waialua?
Average temperature in December
Waialua, HI
- Average high temperature in December: 76.6°F
The warmest month (with the highest average high temperature) is September (81.7°F).
The month with the lowest average high temperature is February (75°F).
- Average low temperature in December: 71.2°F
The months with the highest average low temperature are August and September (75.7°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in December
Waialua, HI
- Average pressure in December: 30"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The month with the lowest atmospheric pressure is October (29.97"Hg).
Average wind speed in December
Waialua, HI
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is January (9mph).
Average humidity in December
Waialua, HI
- Average humidity in December: 76%
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are May and September (74%).
Average rainfall in December
Waialua, HI
- Average rainfall in December: 1.06"
The wettest months (with the highest rainfall) are February and October (1.34").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in December
Waialua, HI
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is March (17.7 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in December
Waialua, 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 (75.2°F).
Average daylight in December /
Average sunshine in December
Waialua, HI
- Average daylight in December: 10h and 5min
The month with the longest days is June (Average daylight: 13h and 24min).
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 54min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in December
Waialua, HI
- Average sunshine days in December: 10.4 days
The month with the most sunshine days is January (12.9 days).
The month with the least sunshine days is September (6.5 days).
Average UV index in December
Waialua, HI
- Average UV index in December: 6
The months with the highest UV index are July and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, August, October, November and December (UV index 6).
Average cloud cover in December
Waialua, HI
- Average cloud cover in December: 40
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are January and September (Cloud cover 37).
Average visibility in December
Waialua, 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).
Waialua, Hawaii, USA
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