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 Wailuku, December's average high-temperature stands at a still moderately hot 75.7°F (24.3°C), closely related to the preceding month. Wailuku's average temperature throughout the nights in December exhibits a minor decrease from daytime highs, stabilizing at an agreeable 72.9°F (22.7°C).Humidity
The average relative humidity in December in Wailuku is 75%.Rainfall
The wettest months in Wailuku are March and December, with an average 0.87" (22mm) of rainfall.Daylight
With an average of 10h and 54min of daylight, December has the shortest days of the year in Wailuku.On the first day of the month, sunrise is at 6:46 am and sunset at 5:43 pm. On the last day of December, in Wailuku, sunrise is at 7:02 am and sunset at 5:56 pm HST.
Sunshine
The month with the least sunshine in Wailuku is December, with an average of 7h of sunshine.UV index
January through June, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 6 in December interprets into the following advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What are December temperatures in Wailuku?
What is the average humidity in December in Wailuku?
What is the wettest month in Wailuku?
How much does it rain in Wailuku in December?
What is the month with the shortest days in Wailuku?
How many hours of daylight does Wailuku have in December?
When is the sunrise / sunset in December in Wailuku?
What is the month with the least sunshine in Wailuku?
How many hours of sunshine does Wailuku have in December?
When is the lowest UV index in Wailuku?
How high is the UV index in December in Wailuku?
Average temperature in December
Wailuku, HI
- Average high temperature in December: 75.7°F
The warmest month (with the highest average high temperature) is September (79.9°F).
The month with the lowest average high temperature is February (73.9°F).
- Average low temperature in December: 72.9°F
The month with the highest average low temperature is October (76.5°F).
The coldest months (with the lowest average low temperature) are February and March (70.7°F).
Average pressure in December
Wailuku, HI
- Average pressure in December: 29.99"Hg
The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in December
Wailuku, HI
- Average wind speed in December: 11.7mph
The windiest month (with the highest average wind speed) is June (13.6mph).
The calmest month (with the lowest average wind speed) is January (10.4mph).
Average humidity in December
Wailuku, HI
- Average humidity in December: 75%
The months with the highest relative humidity are July and August (76%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall in December
Wailuku, HI
- Average rainfall in December: 0.87"
The wettest months (with the highest rainfall) are March and December (0.87").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in December
Wailuku, HI
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is June (6.6 days).
Average daylight in December /
Average sunshine in December
Wailuku, HI
- Average daylight in December: 10h and 5min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in December: 7h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in December
Wailuku, HI
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is June (19.9 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in December
Wailuku, HI
- Average UV index in December: 6
The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).
Average cloud cover in December
Wailuku, HI
- Average cloud cover in December: 24
The month with the most cloud cover is March (Cloud cover 30).
The months with the least cloud cover are June and September (Cloud cover 21).
Average visibility in December
Wailuku, 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).
Wailuku, Hawaii, USA
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