December weather forecastKalaoa, HI
December
Weather in December
Wrapping up the year, December brings milder temperatures hovering around 71.1°F (21.7°C), keeping up with November's cooling trend. The rainfall also remains consistent with November's readings. As the transition from November to January, it signals the end of the mild winter and the arrival of a new year. Even towards the end of the year, Kalaoa still sees plenty of sunshine. The climate remains agreeable with the blend of moderate rain, calm winds, and welcoming sun, rounding off the year's tropical weather pattern in Kalaoa, Hawaii.Temperature
Stepping into December, Kalaoa records an average high-temperature of a still moderately hot 74.8°F (23.8°C), almost consistent with November. Kalaoa's December nights demonstrate minimal variation from the daytime temperatures, with an average of 71.1°F (21.7°C).Humidity
The average relative humidity in December is 73%.Rainfall
In Kalaoa, in December, it is raining for 9.4 days, with typically 0.67" (17mm) of accumulated precipitation. In Kalaoa, during the entire year, the rain falls for 136 days and collects up to 8.5" (216mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 11h and 0min of daylight.On the first day of the month, sunrise is at 6:42 am and sunset at 5:43 pm. On the last day of December, sunrise is at 6:58 am and sunset at 5:56 pm HST.
Sunshine
December has the least sunshine of the year, with an average of 7.4h of sunshine.UV index
January through December, with an average maximum UV index of 6, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 6 in December converts into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Kalaoa, HI
- Average high temperature in December: 74.8°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is February (73.2°F).
- Average low temperature in December: 71.1°F
The months with the highest average low temperature are August, September and October (74.8°F).
The coldest month (with the lowest average low temperature) is March (69.4°F).
Average pressure in December
Kalaoa, HI
- Average pressure in December: 29.99"Hg
The month with the highest atmospheric pressure is April (30.04"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).
Average wind speed in December
Kalaoa, HI
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is February (6.2mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in December
Kalaoa, HI
- Average humidity in December: 73%
The months with the highest relative humidity are June, July and August (77%).
The month with the lowest relative humidity is February (71%).
Average rainfall in December
Kalaoa, HI
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in December
Kalaoa, HI
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is February (8.1 days).
Average daylight in December /
Average sunshine in December
Kalaoa, 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: 7h and 24min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).
Average sunshine days in December
Kalaoa, HI
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is January (14.5 days).
The month with the least sunshine days is October (6.8 days).
Average UV index in December
Kalaoa, HI
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in December
Kalaoa, HI
- Average cloud cover in December: 15
The months with the most cloud cover are April, May and June (Cloud cover 21).
The month with the least cloud cover is January (Cloud cover 12).
Average visibility in December
Kalaoa, 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).
