December weather forecast
Nipoã, Brazil

The first month of the summer, December, is also a moderately hot month in Nipoã, Brazil, with temperature in the range of an average high of 29.8°C (85.6°F) and an average low of 21.2°C (70.2°F).

Temperature

The transition from November to December brings an average high-temperature of a warm 29.8°C (85.6°F), barely different from November's 30°C (86°F). Nipoã usually reports an average low-temperature of 21.2°C (70.2°F) during the month of December.

Heat index

In December, the heat index is estimated at a fiery hot 37°C (98.6°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Consider that heat index readings are for situations in the shade and light wind. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In Nipoã, the average relative humidity in December is 81%.

Rainfall

In Nipoã, during December, the rain falls for 28.5 days and regularly aggregates up to 201mm (7.91") of precipitation. Throughout the year, there are 208.9 rainfall days, and 1257mm (49.49") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 13h and 24min of daylight.
On the first day of the month, sunrise is at 05:28 and sunset at 18:47. On the last day of December, sunrise is at 05:40 and sunset at 19:03 -03.

Sunshine

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

UV index

January, March through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 6 translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.