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 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
December denotes a minimal variation in the average high-temperature to a still agreeable 70.5°F (21.4°C) from November's 71.8°F (22.1°C). During the nights of December, Kealakekua records an average temperature of 66.6°F (19.2°C), a minor drop from daytime peaks.Humidity
In December, the average relative humidity is 76%.Rainfall
In Kealakekua, in December, during 15.6 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Kealakekua, during the entire year, the rain falls for 216.1 days and collects up to 16.57" (421mm) of precipitation.Daylight
The month with the shortest days is December, 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 5:44 pm. On the last day of December, sunrise is at 6:57 am and sunset at 5:56 pm HST.
Sunshine
The months with the least sunshine are November and December, with an average of 7.3h of sunshine.UV index
January through April, November and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In December, the maximum UV index of 5 translates into these guidelines:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Kealakekua have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Kealakekua, HI
- Average high temperature in December: 70.5°F
The warmest months (with the highest average high temperature) are August and October (73.2°F).
The month with the lowest average high temperature is February (68.9°F).
- Average low temperature in December: 66.6°F
The month with the highest average low temperature is October (70°F).
The coldest month (with the lowest average low temperature) is March (64.8°F).
Average pressure in December
Kealakekua, HI
- Average pressure in December: 29.98"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
Kealakekua, HI
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).
Average humidity in December
Kealakekua, HI
- Average humidity in December: 76%
The months with the highest relative humidity are June, July, August and September (81%).
The month with the lowest relative humidity is February (73%).
Average rainfall in December
Kealakekua, HI
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is September (1.81").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in December
Kealakekua, HI
- Average rainfall days in December: 15.6 days
The month with the highest number of rainy days is August (21.8 days).
The month with the least rainy days is January (10.8 days).
Average daylight in December /
Average sunshine in December
Kealakekua, 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 2min
The month with the most sunshine is May (Average sunshine: 10h and 42min).
The months with the least sunshine are November and December (Average sunshine: 7h and 18min).
Average sunshine days in December
Kealakekua, HI
- Average sunshine days in December: 8.3 days
The month with the most sunshine days is January (12.7 days).
The month with the least sunshine days is May (3.2 days).
Average UV index in December
Kealakekua, HI
- Average UV index in December: 5
The months with the highest UV index are May, June, July, August, September and October (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 5).
Average cloud cover in December
Kealakekua, HI
- Average cloud cover in December: 18
The month with the most cloud cover is June (Cloud cover 31).
The month with the least cloud cover is January (Cloud cover 15).
Average visibility in December
Kealakekua, 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).
Kealakekua, Hawaii, USA
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