December weather forecast
Dededo, GU

December brings the year to a close, with temperatures dropping marginally from 83.5°F (28.6°C) to 82°F (27.8°C) and rainfall coming down to 2.99" (76mm). A festive atmosphere engulfs Dededo during these months, with the relatively cooler climate contributing to the cheer. The pacific winds gain a bit of momentum adding to the sense of comfortable coolness. December is an excellent time for water-sports enthusiasts who enjoy the blend of cooler temperatures and fair winds. With the holiday season in full swing, Dededo's December is an experience in and of itself.

Temperature

December's beginning in Dededo signals an average high-temperature of a still warm 83.5°F (28.6°C), barely different from November's 84.2°F (29°C). Dededo, in December, registers a nighttime average temperature of 82°F (27.8°C).

Heat index

During December, the heat index is evaluated at a tropical 91.4°F (33°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

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

Rainfall

In December, in Dededo, the rain falls for 22.8 days. Throughout December, 2.99" (76mm) of precipitation is accumulated. Throughout the year, there are 288.5 rainfall days, and 60.08" (1526mm) of precipitation is accumulated.

Daylight

The month with the shortest days in Dededo is December, with an average of 11h and 18min of daylight.
On the first day of December in Dededo, sunrise is at 6:28 am and sunset at 5:51 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:03 pm ChST.

Sunshine

The average sunshine in December is 6.5h.

UV index

The months with the highest UV index are January through August, October through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 during December translates into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.