December weather forecast
Formosa do Rio Preto, Brazil

December, the first month of the summer in Formosa do Rio Preto, is also a hot month, with temperature in the range of an average high of 31.3°C (88.3°F) and an average low of 20.3°C (68.5°F).

Temperature

Formosa do Rio Preto, Brazil, starts December with an average high-temperature of a still hot 31.3°C (88.3°F), a minor shift from November's 32.1°C (89.8°F). Formosa do Rio Preto observes an average low-temperature of 20.3°C (68.5°F) during December.

Heat index

December's heat index is calculated to be a fiery hot 39°C (102.2°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in December is 73%.

Rainfall

In December, in Formosa do Rio Preto, the rain falls for 16.5 days. Throughout December, 65mm (2.56") of precipitation is accumulated. Throughout the year, there are 134.3 rainfall days, and 578mm (22.76") of precipitation is accumulated.

Daylight

With an average of 12h and 48min of daylight, December has the longest days of the year in Formosa do Rio Preto, Brazil.
On the first day of December in Formosa do Rio Preto, Brazil, sunrise is at 05:28 and sunset at 18:11. On the last day of the month, sunrise is at 05:41 and sunset at 18:26 -03.

Sunshine

With an average of 9.9h of sunshine, December has the most sunshine of the year.

UV index

January through July, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Formosa do Rio Preto. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A maximum UV index of 6 in December translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.