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
The advent of December presents an average high-temperature of a still moderately hot 74.8°F (23.8°C), maintaining a close correlation with the preceding month. December's average low-temperature is a pleasant 71.1°F (21.7°C), reflecting a minor difference from the day's peak temperatures.Humidity
In Mahaiula, Hawaii, the average relative humidity in December is 73%.Rainfall
In Mahaiula, during December, the rain falls for 9.4 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Mahaiula, 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 5:44 pm. On the last day of December, sunrise is at 6:58 am and sunset at 5:56 pm HST.
Sunshine
With an average of 7.4h of sunshine, December has the least sunshine of the year in Mahaiula, Hawaii.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 in Mahaiula are January through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily high UV index of 6 in December leads to these guidelines:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What is the average December temperature in Mahaiula?
What is the average humidity in December in Mahaiula?
How much does it rain in Mahaiula in December?
What is the month with the shortest days in Mahaiula?
What is the average length of the day in December in Mahaiula?
When are sunrise and sunset in December in Mahaiula?
What is the month with the least sunshine in Mahaiula?
How many hours of sunshine does Mahaiula have in December?
What is the month with the highest UV index in Mahaiula?
What are the months with the lowest UV index in Mahaiula?
What is the UV index intensity in December in Mahaiula?
Average temperature in December
Mahaiula, 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
Mahaiula, 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
Mahaiula, 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
Mahaiula, 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
Mahaiula, 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
Mahaiula, 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
Mahaiula, 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 June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).
Average sunshine days in December
Mahaiula, 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
Mahaiula, 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
Mahaiula, 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
Mahaiula, 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).
Mahaiula, Hawaii, USA
Weather forecast for your location
2. Allow the app to use your location
