December weather forecast
Alegrete, Brazil

The first month of the summer, December, is a tropical month in Alegrete, Brazil, with temperature in the range of an average high of 30.8°C (87.4°F) and an average low of 18.8°C (65.8°F).

Temperature

The advent of December presents an average high-temperature of a tropical 30.8°C (87.4°F), maintaining a close correlation with the preceding month. A sharp reduction from the daytime highs is witnessed during December, with nighttime temperatures averaging a low of 18.8°C (65.8°F).

Heat index

The heat index value during December is estimated at a sweltering 36°C (96.8°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

December is the least humid month in Alegrete, Brazil, with an average relative humidity of 65%.

Rainfall

In Alegrete, in December, it is raining for 12.9 days, with typically 103mm (4.06") of accumulated precipitation. Throughout the year, there are 139.6 rainfall days, and 983mm (38.7") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 14h and 0min of daylight.
On the first day of the month, sunrise is at 05:34 and sunset at 19:30. On the last day of December, in Alegrete, Brazil, sunrise is at 05:45 and sunset at 19:47 -03.

Sunshine

November and December, with an average of 9h of sunshine, are months with the most sunshine in Alegrete.

UV index

In Alegrete, the average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during December translates into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.