December weather forecast
Goiatins, Brazil

December, the first month of the summer in Goiatins, is also a hot month, with an average temperature fluctuating between 22°C (71.6°F) and 31.5°C (88.7°F).

Temperature

With the onset of December, the average high-temperature registers at a still tropical 31.5°C (88.7°F), subtly different from November's 32.9°C (91.2°F). Goiatins records a consistent low-temperature of 22°C (71.6°F) during December nights.

Heat index

December's average heat index is evaluated at a blisteringly hot 41°C (105.8°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Note that heat index values are valued for light wind and location in the shade. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In December, the average relative humidity in Goiatins is 75%.

Rainfall

In Goiatins, during December, the rain falls for 24.3 days and regularly aggregates up to 107mm (4.21") of precipitation. Throughout the year, in Goiatins, there are 178.4 rainfall days, and 785mm (30.91") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 36min of daylight.
On the first day of December, sunrise is at 05:42 and sunset at 18:14. On the last day of the month, sunrise is at 05:55 and sunset at 18:29 -03.

Sunshine

In December, the average sunshine in Goiatins is 9.4h.

UV index

The months with the lowest UV index are January through June, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the UV index of 6 transforms into the following advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.