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
The start of December marks an average high-temperature of a still pleasant 70.5°F (21.4°C), hardly distinguishable from the conditions in November. A mild drop to an average of 66.6°F (19.2°C) marks the nights in Keauhou, Hawaii, during December.Humidity
The average relative humidity in December is 76%.Rainfall
In Keauhou, during December, the rain falls for 15.6 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, in Keauhou, there are 216.1 rainfall days, and 16.57" (421mm) of precipitation is accumulated.Ocean temperature
In Keauhou, the average seawater temperature in December is 77.4°F (25.2°C).Note: Between 77°F (25°C) and 84.2°F (29°C), water temperature is typically considered very warm and pleasurable by everyone. Water activities at these temperatures are enjoyable for extended periods without discomfort.
Daylight
December has the shortest days of the year, with an average of 11h and 0min of daylight.On the first day of December, sunrise is at 6:42 am and sunset at 5:44 pm. On the last day of the month, sunrise is at 6:58 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
The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 in December interprets into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Alert! Sand and water increase UV exposure due to their reflective properties.
Frequently asked questions
What is the average December temperature in Keauhou?
What is the average humidity in December in Keauhou?
How many days does it rain in December in Keauhou?
How warm is the water in December in Keauhou?
What is the month with the shortest days in Keauhou?
How many hours of daylight does Keauhou have in December?
When is the sunrise / sunset in December in Keauhou?
What are the months with the least sunshine in Keauhou?
How long on average sun shines in December in Keauhou?
What is the month with the lowest UV index in Keauhou?
What is the UV index intensity in December in Keauhou?
Average temperature in December
Keauhou, 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
Keauhou, 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
Keauhou, 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
Keauhou, 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
Keauhou, 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
Keauhou, 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 sea temperature in December
Keauhou, HI
- Average sea temperature in December: 77.4°F
The best month for swimming (with the highest average sea temperature) is September (80°F).
The coldest month (with the lowest average sea temperature) is March (76°F).
Average daylight in December /
Average sunshine in December
Keauhou, 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
Keauhou, 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
Keauhou, 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
Keauhou, 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
Keauhou, 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).
Keauhou, Hawaii, USA
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