December weather forecastCatiguá, Brazil

Weather in December

The first month of the summer, December, is also a moderately hot month in Catiguá, Brazil, with an average temperature varying between 29.4°C (84.9°F) and 21°C (69.8°F).

Temperature

December experiences an average high-temperature of a still warm 29.4°C (84.9°F), barely different from November's 29.9°C (85.8°F). Catiguá cools down to an average low-temperature of 21°C (69.8°F) throughout the month of December.

Heat index

December's average heat index is computed to be a torrid 36°C (96.8°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. 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 extremely significant for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In Catiguá, the average relative humidity in December is 80%.

Rainfall

In Catiguá, Brazil, during December, the rain falls for 27.7 days and regularly aggregates up to 183mm (7.2") of precipitation. In Catiguá, during the entire year, the rain falls for 204.1 days and collects up to 1207mm (47.52") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 24min of daylight.
On the first day of December in Catiguá, sunrise is at 05:25 and sunset at 18:45. On the last day of the month, sunrise is at 05:37 and sunset at 19:01 -03.

Sunshine

In Catiguá, the average sunshine in December is 7.6h.

UV index

The months with the highest UV index in Catiguá are January through April, June through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 6 in December translates into these instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. 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. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.