December weather forecast
Talofofo, GU

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Weather in December

December in Talofofo sees the arrival of winter, with a minor increase in wind speed from 14.7mph (23.7km/h) in November to 15.7mph (25.3km/h). The meteorological conditions during December frame a weather picture driven by light winds, regular daytime temperatures, and slightly longer nights. After November's cool wind, the mildness of December arrives, bringing with it a comfortable, peaceful Christmas season. As the year ends, December carries on the tradition of incredibly balanced weather that Talofofo has exhibited throughout the year. Even as the curtain falls on the year, Talofofo’s climatic stability persists, ending the year on a pleasant note and setting the stage for the new year ahead.

Temperature

At the start of December, Talofofo's average high-temperature reaches a still moderately hot 83.5°F (28.6°C), subtly different from the preceding month. During December's nights, Talofofo notes a minor temperature decline, reaching an average of 82°F (27.8°C).

Heat index

The heat index in December is calculated to be a hot 91.4°F (33°C). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

January, March through May, October through December, with an average relative humidity of 78%, are the most humid months.

Rainfall

In Talofofo, during December, the rain falls for 22.8 days and regularly aggregates up to 2.99" (76mm) of precipitation. In Talofofo, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.

Daylight

The month with the shortest days is December, with an average of 11h and 24min of daylight.
On the first day of the month, sunrise is at 6:28 am and sunset at 5:52 pm. On the last day of December, sunrise is at 6:43 am and sunset at 6:04 pm ChST.

Sunshine

The average sunshine in December in Talofofo is 6.5h.

UV index

January through August, October through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 7 in December translates into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

Is it hot in Talofofo during December?

The high-temperature in Talofofo, Guam, during December is 83.5°F (28.6°C) and the low-temperature is 82°F (27.8°C). In December, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 91.4°F (33°C).

What are the most humid months in Talofofo?

The months with the highest humidity in Talofofo are January, March through May, October through December, with an average relative humidity of 78%.

What is the average humidity in December in Talofofo?

In Talofofo, Guam, the average relative humidity in December is 78%.

How much does it rain in Talofofo in December?

In Talofofo, in December, it is raining for 22.8 days, with typically 2.99" (76mm) of accumulated precipitation.

What is the month with the shortest days in Talofofo?

The month with the shortest days in Talofofo, Guam, is December, with an average of 11h and 24min of daylight.

What is the average length of the day in December in Talofofo?

In Talofofo, the average day length in December is 11h and 22min.

When is the sunrise / sunset in December in Talofofo?

On the first day of December, sunrise is at 6:28 am and sunset at 5:52 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:04 pm ChST.

How long on average sun shines in December in Talofofo?

The average sunshine duration in December in Talofofo, Guam, is 6.5h.

When is the highest UV index in Talofofo?

January through August, October through December, with an average maximum UV index of 7, are months with the highest UV index in Talofofo.

What is the UV index intensity in December in Talofofo?

The average daily maximum UV index in December is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Talofofo, GU

Average temperature in December - Talofofo, GU
  • Average high temperature in December: 83.5°F

The warmest months (with the highest average high temperature) are July and August (84.7°F).
The month with the lowest average high temperature is February (81.7°F).

  • Average low temperature in December: 82°F

The month with the highest average low temperature is June (83.3°F).
The coldest month (with the lowest average low temperature) is February (79.7°F).

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Average pressure in December
Talofofo, GU

Average pressure in December - Talofofo, GU
  • Average pressure in December: 29.83"Hg

The month with the highest atmospheric pressure is February (29.88"Hg).
The months with the lowest atmospheric pressure are August, September and October (29.79"Hg).

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Average wind speed in December
Talofofo, GU

Average wind speed in December - Talofofo, GU
  • Average wind speed in December: 15.7mph

The windiest month (with the highest average wind speed) is February (16.3mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

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Average humidity in December
Talofofo, GU

Average humidity in December - Talofofo, GU
  • Average humidity in December: 78%

The months with the highest relative humidity are January, March, April, May, October, November and December (78%).
The month with the lowest relative humidity is August (76%).

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Average rainfall in December
Talofofo, GU

Average rainfall in December - Talofofo, GU
  • Average rainfall in December: 2.99"

The wettest month (with the highest rainfall) is September (10.28").
The driest month (with the least rainfall) is March (1.81").

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Average rainfall days in December
Talofofo, GU

Average rainfall days in December - Talofofo, GU
  • Average rainfall days in December: 22.8 days

The months with the highest number of rainy days are July and August (28.9 days).
The month with the least rainy days is February (17.5 days).

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Average daylight in December /
Average sunshine in December
Talofofo, GU

Average daylight in December / Average sunshine in December - Talofofo, GU
  • Average daylight in December: 11h and 2min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in December: 6h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is November (Average sunshine: 6h and 18min).

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Average sunshine days in December
Talofofo, GU

Average sunshine days in December - Talofofo, GU
  • Average sunshine days in December: 4.7 days

The month with the most sunshine days is March (6.6 days).
The month with the least sunshine days is September (1.1 days).

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Average UV index in December
Talofofo, GU

Average UV index in December - Talofofo, GU
  • Average UV index in December: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 7).
The month with the lowest UV index is September (UV index 6).

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Average cloud cover in December
Talofofo, GU

Average cloud cover in December - Talofofo, GU
  • Average cloud cover in December: 44

The months with the most cloud cover are January, August and October (Cloud cover 46).
The months with the least cloud cover are May and June (Cloud cover 39).

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Average visibility in December
Talofofo, GU

Average visibility in December - Talofofo, GU
  • 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).

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Talofofo, Guam, USA

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