December weather forecast
Barro Duro, Brazil

The first month of the summer, December, is also a hot month in Barro Duro, Brazil, with temperature in the range of an average high of 33.8°C (92.8°F) and an average low of 23.9°C (75°F).

Temperature

Barro Duro notes an average high-temperature of a hot 33.8°C (92.8°F) in December, hardly diverging from November. An average low-temperature of 23.9°C (75°F) is recorded in the month of December.

Heat index

The average heat index in December is evaluated at an extremely hot 43°C (109.4°F). Notice: Heat cramps and heat exhaustion are likely. Continued strenuous activity might lead to heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in December is 64%.

Rainfall

In Barro Duro, in December, it is raining for 20 days, with typically 124mm (4.88") of accumulated precipitation. In Barro Duro, during the entire year, the rain falls for 220.8 days and collects up to 1560mm (61.42") of precipitation.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 05:26 and sunset at 17:52. On the last day of the month, sunrise is at 05:39 and sunset at 18:06 -03.

Sunshine

In Barro Duro, the average sunshine in December is 8.4h.

UV index

In December, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The UV index of 7 in December translates into these instructions:
Guard oneself from overexposure. Defence against sun injury is vital. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.