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Guam weather in December 2019
- 3030°C max day temperature
- 2323 days with some rainfall
- 2424°C min night temperature
- 1111 hours of daylight per day
- HHigh heat & humidity
- 150150 mm of monthly rainfall
- 99 (Very High) UV index
- 2828°C sea temperature
The December weather guide for Guam shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
Guide to Guam weather in December
The average maximum daytime temperature in Guam in December is a hot 30°C (86°F) with high heat & humidity. The average night-time temperature is usually a warm 24°C (75°F). There are usually 5 hours of bright sunshine each day, which represents 41% of the 11 hours of daylight.
Expect 150mm (5.9 inches) of rainfall across the whole of December with 23 days with some rain falling. Maximum UV levels will be very high (9 UV index) at midday when the skies are clear.
The average sea temperature in and around Guam in December is 28°C (82°F).
The weather in Guam in December is represented by Agana.
Guam sunrise & sunset times for December 2019
Browse the sunrise & sunset times for Guam in December 2019. Select a month to view Guam sunrise & sunset times for the next twelve months. The Guam sunrise & sunset times shown below are for Agana.
|Date||Sunrise times||Sunset times|
|Sunday, 1st December 2019||06:28||17:52|
|Monday, 16th December 2019||06:36||17:56|
|Tuesday, 31st December 2019||06:43||18:04|
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