December weather forecastKaumalapau, HI
December
Weather in December
December, the first month of the winter in Kaumalapau, is also a moderately hot month, with an average temperature fluctuating between 77°F (25°C) and 73.8°F (23.2°C).Temperature
December is marked by an average high-temperature of a still warm 77°F (25°C), almost identical to the preceding month. A mild drop to an average of 73.8°F (23.2°C) marks the nights during December.Humidity
In December, the average relative humidity is 74%.Rainfall
In Kaumalapau, Hawaii, in December, during 10.4 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In Kaumalapau, during the entire year, the rain falls for 98.9 days and collects up to 7.64" (194mm) of precipitation.Snowfall
January through August, October through December are months without snowfall.Daylight
December has the shortest days of the year, with an average of 10h and 54min of daylight.On the first day of December in Kaumalapau, sunrise is at 6:48 am and sunset at 5:46 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:58 pm HST.
Sunshine
With an average of 7.1h of sunshine, December has the least sunshine of the year in Kaumalapau.UV index
The months with the lowest UV index in Kaumalapau are January through April, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Deflect overexposure. Sun protection is a necessity. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Kaumalapau, HI
- Average high temperature in December: 77°F
The warmest month (with the highest average high temperature) is September (81°F).
The month with the lowest average high temperature is February (74.8°F).
- Average low temperature in December: 73.8°F
The months with the highest average low temperature are August and October (77.5°F).
The coldest month (with the lowest average low temperature) is March (71.6°F).
Average pressure in December
Kaumalapau, HI
- Average pressure in December: 29.99"Hg
The month with the highest atmospheric pressure is April (30.05"Hg).
The month with the lowest atmospheric pressure is October (29.96"Hg).
Average wind speed in December
Kaumalapau, HI
- Average wind speed in December: 10mph
The windiest months (with the highest average wind speed) are March and November (10.9mph).
The calmest month (with the lowest average wind speed) is October (9mph).
Average humidity in December
Kaumalapau, HI
- Average humidity in December: 74%
The month with the highest relative humidity is July (75%).
The months with the lowest relative humidity are January and November (73%).
Average rainfall in December
Kaumalapau, HI
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is March (1.26").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Kaumalapau, HI
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is March (12.7 days).
The month with the least rainy days is July (4.7 days).
Average snowfall days in December
Kaumalapau, HI
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Kaumalapau, HI
- Average daylight in December: 10h and 54min
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 54min).
- Average sunshine in December: 7h and 6min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in December
Kaumalapau, HI
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is July (25.6 days).
The month with the least sunshine days is February (12.7 days).
Average UV index in December
Kaumalapau, HI
- Average UV index in December: 6
The months with the highest UV index are May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, November and December (UV index 6).
Average cloud cover in December
Kaumalapau, HI
- Average cloud cover in December: 22
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is September (Cloud cover 18).
Average visibility in December
Kaumalapau, 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).
