Honolulu
Hawaii, USA
Long-term weather forecast
Long-term weather forecast
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December weather forecast and Climate
Honolulu, HI

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Waikiki beach viewed from above, with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
Waikiki beach viewed from above, with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
December is characterized by pleasantly warm temperatures between 68°F (20°C) and 80.6°F (27°C). It is not as hot as during the summer, but it is favorable for every outdoor engagement. Rainfall rises further up to collect at an average of 1.8" (45.7mm), raining for an average of eleven days during the month. There is a slight drop in the average daily sunshine hours to eight, and the ocean temperature drops its warmth to 77°F (25°C). This is still warm for any water activities and any outdoor activities as the humidity is at pleasing 76%.
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  • The average high temperature in December: 81.2°F

The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is January (80.1°F).

  • The average low temperature in December: 68.3°F

The month with the highest average low temperature is August (75.1°F).
The coldest month (with the lowest average low temperature) is February (66.1°F).

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  • The average humidity in December: 72.4%

The month with the highest relative humidity is January (73.3%).
The month with the lowest relative humidity is August (64.1%).

  • The average rainfall in December: 10.2"

The wettest month (with the highest rainfall) is March (11.5").
The driest month (with the lowest rainfall) is June (6.2").

  • The average rainfall days in December: 9.7 days

The month with the highest number of rainy days is December (9.7 days).
The month with the lowest number of rainy days is August (5.6 days).

  • The average sea temperature in December: 77°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 (75.7°F).

  • The average daylight in December: 11h

Months with the longest days are April, May, June, July and August (Average daylight: 13h).
Months with shortest days are January, February, November and December (Average daylight: 11h).

  • The average sunshine in December: 6.4h

The month with most sunshine is July (Average sunshine: 9.9h).
The month with least sunshine is December (Average sunshine: 6.4h).

  • The average UV index in December: 6

Months with the highest UV index are June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 6).

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