December weather forecastCatunda, Brazil

Weather in December

December, the first month of the summer in Catunda, is also a hot month, with an average temperature fluctuating between 33.8°C (92.8°F) and 23.7°C (74.7°F).

Temperature

The onset of December marks an average high-temperature of a tropical 33.8°C (92.8°F), hardly differing from November's 35.2°C (95.4°F). In December, Catunda records an average nighttime temperature of 23.7°C (74.7°F).

Heat index

For most parts of December, the heat index is evaluated at a blistering 41°C (105.8°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In December, the average relative humidity is 59%.

Rainfall

In Catunda, Brazil, in December, during 10.7 rainfall days, 43mm (1.69") of precipitation is typically accumulated. In Catunda, during the entire year, the rain falls for 163.2 days and collects up to 877mm (34.53") of precipitation.

Daylight

With an average of 12h and 24min of daylight, December has the longest days of the year in Catunda, Brazil.
On the first day of December in Catunda, sunrise is at 05:18 and sunset at 17:41. On the last day of the month, sunrise is at 05:32 and sunset at 17:55 -03.

Sunshine

The average sunshine in December in Catunda, Brazil, is 8h.

UV index

January, July through December, with an average maximum UV index of 7, are months with the highest UV index in Catunda, Brazil. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In December, an average UV index of 7 transforms into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.