December weather forecast
Itamarati, Brazil

The first month of the summer, December, is also a moderately hot month in Itamarati, Brazil, with an average temperature ranging between max 29.9°C (85.8°F) and min 22.2°C (72°F).

Temperature

The introduction of December sees an average high-temperature of a warm 29.9°C (85.8°F), hardly deviating from November. Itamarati, during December, witnesses an average low-temperature of 22.2°C (72°F).

Heat index

In December, the average heat index is calculated to be a blistering 40°C (104°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Understand that the heat index values take into account shaded locations and mild winds. 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', joins air temperature with relative humidity to produce a temperature perception for humans. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In Itamarati, the average relative humidity in December is 88%.

Rainfall

In Itamarati, during December, the rain falls for 28.4 days and regularly aggregates up to 196mm (7.72") of precipitation. Throughout the year, there are 281.1 rainfall days, and 1504mm (59.21") of precipitation is accumulated.

Daylight

The month with the longest days in Itamarati is December, with an average of 12h and 30min of daylight.
On the first day of December, sunrise is at 06:08 and sunset at 18:36. On the last day of the month, sunrise is at 06:21 and sunset at 18:51 -04.

Sunshine

In December, the average sunshine is 6h.

UV index

January through June, November 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 exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 in December translates into these instructions:
Ward off overexposure. Defence against solar harm is crucial. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.