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
As Hanamaulu, Hawaii, transitions from November to December, the average high-temperatures adjust to a still moderately hot 75.4°F (24.1°C), nearly the same as the previous 77.2°F (25.1°C). Hanamaulu sees a minor drop to an average minimum temperature of 71.8°F (22.1°C) during the night in the month of December.Humidity
The months with the highest humidity in Hanamaulu are June through August, October and December, with an average relative humidity of 77%.Rainfall
In Hanamaulu, during December, the rain falls for 18.1 days and regularly aggregates up to 2.2" (56mm) of precipitation. Throughout the year, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated.Ocean temperature
In Hanamaulu, in December, the average water temperature is 76.8°F (24.9°C).Note: Swimming in 76.8°F (24.9°C) can be enjoyable or not, depending on how you feel about the cold and conditions such as sunshine, wind, and the day's temperature. FYI: Olympic standards dictate waters of 77°F (25°C) to 82.4°F (28°C).
Daylight
December has the shortest days of the year, with an average of 10h and 48min of daylight.On the first day of the month, sunrise is at 7:00 am and sunset at 5:53 pm. On the last day of December, sunrise is at 7:16 am and sunset at 6:05 pm HST.
Sunshine
The average sunshine in December is 6.4h.UV index
January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.Note: The UV index of 6 in December translates into these instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Take note! The UV strength of the Sun elevates when reflected off water and sand.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hanamaulu in December?
What are the most humid months in Hanamaulu?
What is the average humidity in December in Hanamaulu?
How much does it rain in Hanamaulu in December?
What is the water temperature in December in Hanamaulu?
What is the month with the shortest days in Hanamaulu?
What is the average length of the day in December in Hanamaulu?
When is the sunrise / sunset in December in Hanamaulu?
How many hours of sunshine does Hanamaulu have in December?
When is the lowest UV index in Hanamaulu?
What is the UV index intensity in December in Hanamaulu?
Average temperature in December
Hanamaulu, HI
- Average high temperature in December: 75.4°F
The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).
- Average low temperature in December: 71.8°F
The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in December
Hanamaulu, HI
- Average pressure in December: 30.01"Hg
The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).
Average wind speed in December
Hanamaulu, HI
- Average wind speed in December: 11.2mph
The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).
Average humidity in December
Hanamaulu, HI
- Average humidity in December: 77%
The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).
Average rainfall in December
Hanamaulu, HI
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").
Average rainfall days in December
Hanamaulu, HI
- Average rainfall days in December: 18.1 days
The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in December
Hanamaulu, HI
- Average sea temperature in December: 76.8°F
The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.3°F).
Average daylight in December /
Average sunshine in December
Hanamaulu, HI
- Average daylight in December: 10h and 5min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in December
Hanamaulu, HI
- Average sunshine days in December: 6.7 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).
Average UV index in December
Hanamaulu, 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
Hanamaulu, HI
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).
Average visibility in December
Hanamaulu, 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).
Hanamaulu, Hawaii, USA
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