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Weather in December in Guam

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< December >
 
Normal Max/ High Temperature 30°C (86°F)
 
Average Temperature 27°C (81°F)
 
Min/ Low Temperature 24°C (76°F)
 
Normal Precipitation 137mm (5.4in)
Number of Wet Days (probability of rain on a day) 18 (58%)
Average Sunlight per day 05:54
Average Daylight per day 11:20
Sunny (Cloudy) Daylight Hours 53% (47%)
Sun altitude at solar noon on the 21st day.
53.1°


  • The average temperature in Guam in December is hot at 27.3 °C (81.14 °F).
  • Afternoons can be very hot with average high temperatures reaching 30.1 °C (86.2 °F).
  • Overnight temperatures are generally fairly hot with an average low of 24.4 °C (75.9 °F).
  • In December the variation/ range of diurnal mean temperatures is 5.7 °C (10.3 °F).
  • The weather in December is far from dry with rain at intervals. Some 136.9mm (5.4in) of liquid accrues across an average of 18 days.
  • In December the heavens above Guam are fair with an average of a moderate 5:54 of bright sunshine per day.
  • The shortest day is 11:19 long and the longest day is 11:22 long with an average length of 11:20.
  • There are approximately 5:18 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 52.6% of daylight hours and cloudy 47.4% of daylight hours.

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Weather Trend Graph for December in Guam, Mariana Islands

Graph of weather in Guam in December

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