December weather forecastPapaikou, HI
December
Weather in December
December, the first month of the winter in Papaikou, is also an agreeable month, with an average temperature ranging between min 66.4°F (19.1°C) and max 71.6°F (22°C).Temperature
Papaikou experiences a subtle adjustment in high-temperatures to a still agreeable 71.6°F (22°C) with the onset of December, maintaining near parity with November's 72.9°F (22.7°C). December nighttime temperatures hover close to the daytime peak with an average of 66.4°F (19.1°C).Humidity
The average relative humidity in December is 79%.Rainfall
In Papaikou, in December, it is raining for 18.4 days, with typically 2.64" (67mm) of accumulated precipitation. Throughout the year, there are 227.7 rainfall days, and 27.83" (707mm) of precipitation is accumulated.Ocean temperature
In December, the average ocean temperature is 76.8°F (24.9°C).Note: If you're wary of the cold, the surrounding conditions—sunshine, wind, and air temperature become crucial when swimming in 76.8°F (24.9°C) waters. Olympic standards, for reference, are set between 77°F (25°C) and 82.4°F (28°C).
Daylight
With an average of 11h and 0min of daylight, December has the shortest days of the year.On the first day of December in Papaikou, sunrise is at 6:39 am and sunset at 5:40 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 5:52 pm HST.
Sunshine
With an average of 6.5h of sunshine, December has the least sunshine of the year.UV index
May through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 6 during December translates into these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. 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. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Attention! UV strength is notably upped by the reflection of sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Papaikou, HI
- Average high temperature in December: 71.6°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is March (69.6°F).
- Average low temperature in December: 66.4°F
The month with the highest average low temperature is September (70°F).
The coldest month (with the lowest average low temperature) is March (64°F).
Average pressure in December
Papaikou, HI
- Average pressure in December: 29.99"Hg
The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in December
Papaikou, HI
- Average wind speed in December: 6.9mph
The windiest month (with the highest average wind speed) is August (7.6mph).
The calmest month (with the lowest average wind speed) is October (6.7mph).
Average humidity in December
Papaikou, HI
- Average humidity in December: 79%
The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are January, May, June and July (78%).
Average rainfall in December
Papaikou, HI
- Average rainfall in December: 2.64"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is June (1.1").
Average rainfall days in December
Papaikou, HI
- Average rainfall days in December: 18.4 days
The month with the highest number of rainy days is March (22.9 days).
The month with the least rainy days is January (13.3 days).
Average sea temperature in December
Papaikou, HI
- Average sea temperature in December: 76.8°F
The best month for swimming (with the highest average sea temperature) is September (79.3°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight in December /
Average sunshine in December
Papaikou, HI
- Average daylight in December: 11h and 0min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in December: 6h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in December
Papaikou, HI
- Average sunshine days in December: 6.2 days
The month with the most sunshine days is January (12.1 days).
The month with the least sunshine days is August (1.8 days).
Average UV index in December
Papaikou, HI
- Average UV index in December: 6
The months with the highest UV index are May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March and April (UV index 5).
Average cloud cover in December
Papaikou, HI
- Average cloud cover in December: 33
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in December
Papaikou, 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).
