December weather forecast
Barra do Turvo, Brazil

The first month of the summer, December, is a tropical month in Barra do Turvo, Brazil, with temperature in the range of an average low of 19.9°C (67.8°F) and an average high of 30.5°C (86.9°F).

Temperature

Barra do Turvo experiences an average high-temperature of a hot 30.5°C (86.9°F) in December, marking an insignificant shift from 27.8°C (82°F) in November. Barra do Turvo observes an average low-temperature of 19.9°C (67.8°F) during December nights.

Heat index

During December, the heat index is appraised at an extremely hot 40°C (104°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

December is the least humid month, with an average relative humidity of 82%.

Rainfall

In Barra do Turvo, in December, it is raining for 21.9 days, with typically 105mm (4.13") of accumulated precipitation. In Barra do Turvo, during the entire year, the rain falls for 210 days and collects up to 893mm (35.16") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 36min of daylight.
On the first day of the month, sunrise is at 05:16 and sunset at 18:50. On the last day of December, sunrise is at 05:27 and sunset at 19:06 -03.

Sunshine

The average sunshine in December in Barra do Turvo is 6.6h.

UV index

The months with the highest UV index are January through March, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: During December, 6 as the daily maximum UV index converts into the following advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.