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
December is marked by an average high-temperature of a still warm 76.5°F (24.7°C), almost identical to the preceding month. Waipahu documents a consistent average low-temperature of 70.5°F (21.4°C) at night during December.Humidity
The months with the highest humidity in Waipahu are February and December, with an average relative humidity of 76%.Rainfall
In Waipahu, during December, the rain falls for 17 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Waipahu, Hawaii, during the entire year, the rain falls for 208.4 days and collects up to 16.5" (419mm) of precipitation.Ocean temperature
In December, the average ocean temperature in Waipahu, Hawaii, is 77.4°F (25.2°C).Note: Water temperature ranging between 77°F (25°C) and 84.2°F (29°C) is considered very warm and pleasing for everyone. It allows for enjoyable water activities over extended periods without discomfort.
Daylight
With an average of 10h and 54min of daylight, December has the shortest days of the year.On the first day of December in Waipahu, sunrise is at 6:53 am and sunset at 5:49 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:01 pm HST.
Sunshine
The months with the least sunshine in Waipahu, Hawaii, are November and December, with an average of 6.3h of sunshine.UV index
The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 6 during December morphs into the following directions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Heed this! UV intensity is much stronger when reflected off sand and water.
Frequently asked questions
What is the average December temperature in Waipahu?
What is the most humid month in Waipahu?
What is the average humidity in December in Waipahu?
How many days does it rain in December in Waipahu?
What is the ocean temperature in December in Waipahu?
What is the month with the shortest days in Waipahu?
How many hours of daylight does Waipahu have in December?
When are sunrise and sunset in December in Waipahu?
What is the month with the least sunshine in Waipahu?
How long on average sun shines in December in Waipahu?
When is the lowest UV index in Waipahu?
What is the UV index reading in December in Waipahu?
Average temperature in December
Waipahu, HI
- Average high temperature in December: 76.5°F
The warmest months (with the highest average high temperature) are August and September (82°F).
The months with the lowest average high temperature are February and March (75.4°F).
- Average low temperature in December: 70.5°F
The month with the highest average low temperature is September (75°F).
The coldest month (with the lowest average low temperature) is February (68°F).
Average pressure in December
Waipahu, HI
- Average pressure in December: 30"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in December
Waipahu, HI
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is July (11.3mph).
The calmest month (with the lowest average wind speed) is January (8.4mph).
Average humidity in December
Waipahu, HI
- Average humidity in December: 76%
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are April, May, June and September (74%).
Average rainfall in December
Waipahu, HI
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is July (0.71").
Average rainfall days in December
Waipahu, HI
- Average rainfall days in December: 17 days
The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is January (13.5 days).
Average sea temperature in December
Waipahu, HI
- Average sea temperature in December: 77.3°F
The best month for swimming (with the highest average sea temperature) is September (80.6°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight in December /
Average sunshine in December
Waipahu, 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: 6h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The months with the least sunshine are November and December (Average sunshine: 6h and 18min).
Average sunshine days in December
Waipahu, HI
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is January (12.3 days).
The month with the least sunshine days is November (6.2 days).
Average UV index in December
Waipahu, HI
- Average UV index in December: 6
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover in December
Waipahu, HI
- Average cloud cover in December: 40
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 36).
Average visibility in December
Waipahu, 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).
Waipahu, Hawaii, USA
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