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
In December, the average high-temperature is relatively the same as in November - a still pleasant 70.5°F (21.4°C). In Captain Cook, Hawaii, the average low-temperature is 66.6°F (19.2°C).Humidity
The average relative humidity in December in Captain Cook is 76%.Rainfall
In Captain Cook, during December, the rain falls for 15.6 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Captain Cook, 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 10h and 59min of daylight.On the first day of the month, sunrise is at 6:41 am and sunset at 5:44 pm. On the last day of December, in Captain Cook, sunrise is at 6:57 am and sunset at 5:56 pm HST.
Sunshine
November and December, with an average of 7.3h of sunshine, are months with the least sunshine in Captain Cook, Hawaii.UV index
January through April, November and December, with an average maximum UV index of 5, are months with the lowest UV index in Captain Cook. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
FAQ
What is the temperature in December in Captain Cook?
What is the average humidity in December in Captain Cook?
How many days does it rain in December in Captain Cook?
What is the month with the shortest days in Captain Cook?
How many hours of daylight does Captain Cook have in December?
When are sunrise and sunset in December in Captain Cook?
What is the month with the least sunshine in Captain Cook?
How many hours of sunshine does Captain Cook have in December?
What are the months with the lowest UV index in Captain Cook?
What is the UV index reading in December in Captain Cook?
Average temperature in December
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, HI
- Average daylight in December: 10h and 59min
The month with the longest days is June (Average daylight: 13h and 17min).
The month with the shortest days is December (Average daylight: 10h and 59min).
- Average sunshine in December: 7h and 18min
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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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).
Weather forecast for your location
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