December weather forecast
Humaitá, Brazil

The first month of the summer, December, is also a hot month in Humaitá, Brazil, with an average temperature varying between 23°C (73.4°F) and 30.8°C (87.4°F).

Temperature

Humaitá's average high-temperature in December sits at a still hot 30.8°C (87.4°F), showing little difference from the previous month. In the month of December, the nighttime temperature in Humaitá dips to a steady average of 23°C (73.4°F).

Heat index

The heat index value for December is appraised at a scorching 43°C (109.4°F). Prudent: Heat cramps and heat exhaustion are likely. Heatstroke becomes imminent with sustained exertion.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In December, the average relative humidity in Humaitá is 87%.

Rainfall

In Humaitá, in December, it is raining for 28.2 days, with typically 226mm (8.9") of accumulated precipitation. Throughout the year, in Humaitá, there are 246.6 rainfall days, and 1538mm (60.55") of precipitation is accumulated.

Daylight

The month with the longest days in Humaitá is December, with an average of 12h and 36min of daylight.
On the first day of the month, sunrise is at 05:45 and sunset at 18:17. On the last day of December, sunrise is at 05:58 and sunset at 18:32 -04.

Sunshine

In Humaitá, the average sunshine in December is 6.8h.

UV index

January through April and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.