December weather forecast
Chave do Barão, Brazil

The first month of the summer, December, is also a moderately hot month in Chave do Barão, Brazil, with an average temperature fluctuating between 19.6°C (67.3°F) and 29°C (84.2°F).

Temperature

The beginning of December records an average high-temperature of a still warm 29°C (84.2°F), marking a negligible difference from November's 28.5°C (83.3°F). Chave do Barão's average low-temperature for the month of December records at a comfortable 19.6°C (67.3°F).

Heat index

In December, the heat index is appraised at a sweltering 35°C (95°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In December, the average relative humidity is 79%.

Rainfall

In Chave do Barão, in December, it is raining for 26.5 days, with typically 177mm (6.97") of accumulated precipitation. In Chave do Barão, during the entire year, the rain falls for 208.3 days and collects up to 1276mm (50.24") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 30min of daylight.
On the first day of the month, sunrise is at 05:16 and sunset at 18:42. On the last day of December, sunrise is at 05:28 and sunset at 18:59 -03.

Sunshine

In December, the average sunshine is 7.9h.

UV index

February through July, September and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 5 in December, converts into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.