December weather forecast
Crisólita, Brazil

The first month of the summer, December, is still a warm month in Crisólita, Brazil, with an average temperature ranging between min 20.5°C (68.9°F) and max 29.6°C (85.3°F).

Temperature

December's onset records a minor alteration in the average high-temperature to a still warm 29.6°C (85.3°F) from November's 28.8°C (83.8°F). Crisólita's average low-temperature for the month of December records at a pleasant 20.5°C (68.9°F).

Heat index

The heat index value during December is computed to be a fiery hot 37°C (98.6°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in December is 83%.

Rainfall

The month with the most rainfall is December, when the rain falls for 23.9 days and typically aggregates up to 148mm (5.83") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 6min of daylight.
On the first day of December, sunrise is at 05:00 and sunset at 18:05. On the last day of the month, sunrise is at 05:12 and sunset at 18:21 -03.

Sunshine

In December, the average sunshine is 7.4h.

UV index

The months with the highest UV index are January through June, August through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in December leads to these recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. 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 wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.