December weather forecast
Muritiba, Brazil

The first month of the summer, December, is a tropical month in Muritiba, Brazil, with an average temperature varying between 30.7°C (87.3°F) and 20.9°C (69.6°F).

Temperature

The high-temperature average in December for Muritiba is a tropical 30.7°C (87.3°F), staying closely aligned with November's conditions. During December, Muritiba's temperature falls to a steady low-temperature average of 20.9°C (69.6°F).

Heat index

In December, the heat index is evaluated at a very hot 39°C (102.2°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

The average relative humidity in December in Muritiba is 78%.

Rainfall

In Muritiba, Brazil, in December, during 18.6 rainfall days, 52mm (2.05") of precipitation is typically accumulated. In Muritiba, during the entire year, the rain falls for 253.4 days and collects up to 562mm (22.13") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 54min of daylight.
On the first day of December, sunrise is at 05:00 and sunset at 17:49. On the last day of the month, sunrise is at 05:13 and sunset at 18:04 -03.

Sunshine

The average sunshine in December in Muritiba, Brazil, is 7.6h.

UV index

In December, the average daily maximum UV index in Muritiba is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.