December weather forecast
Nuevo Progreso, Guatemala

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

Temperature

The introduction of December notes a subtle temperature variation to a still tropical 30.5°C (86.9°F) from November's 30.2°C (86.4°F). In December, the nighttime temperature lowers to an average of 19.5°C (67.1°F).

Heat index

The heat index for December is computed to be a torrid 35°C (95°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

The average relative humidity in December is 64%.

Rainfall

In Nuevo Progreso, Guatemala, in December, it is raining for 7.6 days, with typically 21mm (0.83") of accumulated precipitation. In Nuevo Progreso, during the entire year, the rain falls for 222.6 days and collects up to 1301mm (51.22") of precipitation.

Daylight

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

Sunshine

In December, the average sunshine 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 estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in December interprets into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.