December weather forecast
Morteros, Argentina

The first month of the summer, December, is a tropical month in Morteros, Argentina, with an average temperature varying between 32.5°C (90.5°F) and 18.3°C (64.9°F).

Temperature

The advent of December brings an average high-temperature of a tropical 32.5°C (90.5°F), almost identical to the preceding month. A steep decline to a comfortable 18.3°C (64.9°F) characterizes the December nights.

Heat index

The heat index value for December is estimated at a fiery hot 36°C (96.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In Morteros, the average relative humidity in December is 54%.

Rainfall

In December, the rain falls for 8.7 days. Throughout December, 48mm (1.89") of precipitation is accumulated. Throughout the year, there are 94 rainfall days, and 527mm (20.75") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 14h and 6min of daylight.
On the first day of the month, sunrise is at 05:57 and sunset at 19:57. On the last day of December, sunrise is at 06:08 and sunset at 20:14 -03.

Sunshine

The month with the most sunshine is December, with an average of 10.7h of sunshine.

UV index

The months with the highest UV index are January, February and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 7 in December transforms into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.