Weather in Guam in December 2017

Check the weather in Guam in December before you book your next holiday. Long-term weather averages give the best indication of the weather in December 2017 and include figures for temperature, sunshine and rainfall plus sunrise & sunset times for Guam.

The December weather guide for Guam shown below is for Agana.

Weather in Guam in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All months

  • 30°C maximum daytime temperature in December in Guam (Agana)30
    30°C max day temperature
  • 5 hours of sunshine per day (41% of daylight hours) in December in Guam5
    5 hours of sunshine per day
  • 23 days with some rainfall in December in Guam (Agana)23
    23 days with some rainfall
  • 24°C minimum night-time temperature in December in Guam (Agana)24
    24°C min night temperature
  • 11 hours of daylight per day in December in Guam (Agana)11
    11 hours of daylight per day
  • High heat & humidity in December in Guam (Agana)H
    High heat & humidity
  • 150 mm monthly rainfall in December in Guam (Agana)150
    150 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in December in Guam (Agana)9
    9 (Very High) UV index
  • 28°C sea temperature in December in Guam (Agana)28
    28°C sea temperature

The average maximum daytime temperature in Guam in December is a hot 30°C (86°F) with high heat & humidity. There are usually 5 hours of bright sunshine each day, which represents 41% of the 11 hours of daylight. The average sea temperature in and around Guam in December is 28°C (82°F).

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 night-time temperature is usually a warm 24°C (75°F). The weather in Guam in December is represented by Agana.

Metric (°C / mm)  |  Imperial (°F / inches)

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Guam sunrise & sunset times for December 2017

Browse the sunrise & sunset times for Guam in December 2017. 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
Friday, 1st December 2017 06:28 17:52
Saturday, 2nd December 2017 06:29 17:52
Sunday, 3rd December 2017 06:29 17:52
Monday, 4th December 2017 06:30 17:52
Tuesday, 5th December 2017 06:30 17:53
Wednesday, 6th December 2017 06:31 17:53
Thursday, 7th December 2017 06:31 17:53
Friday, 8th December 2017 06:32 17:54
Saturday, 9th December 2017 06:33 17:54
Sunday, 10th December 2017 06:33 17:54
Monday, 11th December 2017 06:34 17:55
Tuesday, 12th December 2017 06:34 17:55
Wednesday, 13th December 2017 06:35 17:55
Thursday, 14th December 2017 06:35 17:56
Friday, 15th December 2017 06:36 17:56
Saturday, 16th December 2017 06:36 17:57
Sunday, 17th December 2017 06:37 17:57
Monday, 18th December 2017 06:37 17:58
Tuesday, 19th December 2017 06:38 17:58
Wednesday, 20th December 2017 06:38 17:59
Thursday, 21st December 2017 06:39 17:59
Friday, 22nd December 2017 06:39 18:00
Saturday, 23rd December 2017 06:40 18:00
Sunday, 24th December 2017 06:40 18:01
Monday, 25th December 2017 06:41 18:01
Tuesday, 26th December 2017 06:41 18:02
Wednesday, 27th December 2017 06:42 18:02
Thursday, 28th December 2017 06:42 18:03
Friday, 29th December 2017 06:43 18:03
Saturday, 30th December 2017 06:43 18:04
Sunday, 31st December 2017 06:44 18:04
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Check Guam weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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