December weather forecastLutécia, Brazil

Weather in December

The first month of the summer, December, is still a warm month in Lutécia, Brazil, with temperature in the range of an average low of 20.1°C (68.2°F) and an average high of 29°C (84.2°F).

Temperature

Lutécia notes an average high-temperature of a still warm 29°C (84.2°F) in December, displaying minor variation from November. Throughout December, Lutécia anticipates an average low-temperature of 20.1°C (68.2°F).

Heat index

For December, the heat index is computed to be a fiery hot 35°C (95°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Lutécia, the average relative humidity in December is 81%.

Rainfall

In December, the rain falls for 23.5 days. Throughout December, 111mm (4.37") of precipitation is accumulated. In Lutécia, during the entire year, the rain falls for 183.1 days and collects up to 914mm (35.98") of precipitation.

Daylight

With an average of 13h and 30min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 05:28 and sunset at 18:52. On the last day of the month, sunrise is at 05:40 and sunset at 19:09 -03.

Sunshine

In December, the average sunshine is 7.6h.

UV index

January through March, August through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 6 in December translates into these instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.