December weather forecast
Macarani, Brazil

The first month of the summer, December, is also a moderately hot month in Macarani, Brazil, with temperature in the range of an average low of 19.1°C (66.4°F) and an average high of 28.8°C (83.8°F).

Temperature

The onset of December brings an average high-temperature of a still moderately hot 28.8°C (83.8°F), nearly matching the November temperature. Macarani, during the month of December, experiences an average low-temperature of 19.1°C (66.4°F).

Heat index

The heat index value for December is calculated to be a fiery hot 35°C (95°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in December in Macarani is 84%.

Rainfall

In December, the rain falls for 17.3 days. Throughout December, 81mm (3.19") of precipitation is accumulated. Throughout the year, in Macarani, there are 209.2 rainfall days, and 561mm (22.09") of precipitation is accumulated.

Daylight

With an average of 13h and 0min of daylight, December has the longest days of the year.
On the first day of December in Macarani, sunrise is at 05:01 and sunset at 18:00. On the last day of the month, sunrise is at 05:13 and sunset at 18:16 -03.

Sunshine

The average sunshine in December is 8h.

UV index

The months with the highest UV index in Macarani are January through April, August through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 6 during December leads to these advisories:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.