December weather forecast
Nuevo Progreso, Guatemala

The first month of the winter, December, is still a hot month in Nuevo Progreso, Guatemala, with an average temperature fluctuating between 30.5°C (86.9°F) and 19.5°C (67.1°F).

Temperature

The beginning of December reveals an average high-temperature of a still tropical 30.5°C (86.9°F), showing minimal deviation from the previous month. Nuevo Progreso's nights in December cool down to an average low-temperature of 19.5°C (67.1°F).

Heat index

The heat index in December is estimated at a sweltering 35°C (95°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
When assessing, remember that heat index measurements are for light winds and shaded spots. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In Nuevo Progreso, the average relative humidity in December is 64%.

Rainfall

In Nuevo Progreso, during December, the rain falls for 7.6 days and regularly aggregates up to 21mm (0.83") of precipitation. Throughout the year, there are 222.6 rainfall days, and 1301mm (51.22") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 11h and 18min of daylight.
On the first day of December, sunrise is at 06:17 and sunset at 17:36. On the last day of the month, sunrise is at 06:32 and sunset at 17:49 CST.

Sunshine

The average sunshine in December is 7.6h.

UV index

January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 6 in December translates into this advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.