December weather forecast
Eugênio de Castro, Brazil

December, the first month of the summer in Eugênio de Castro, is still a warm month, with an average temperature varying between 29.5°C (85.1°F) and 18.7°C (65.7°F).

Temperature

January and December are known as Eugênio de Castro's warmest months, with an average high-temperature of 29.5°C (85.1°F).

Heat index

December's average heat index is computed to be a sweltering 35°C (95°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

December is the least humid month in Eugênio de Castro, with an average relative humidity of 73%.

Rainfall

In Eugênio de Castro, during December, the rain falls for 14.4 days and regularly aggregates up to 81mm (3.19") of precipitation. In Eugênio de Castro, during the entire year, the rain falls for 153.3 days and collects up to 1065mm (41.93") of precipitation.

Daylight

With an average of 13h and 54min of daylight, December has the longest days of the year in Eugênio de Castro.
On the first day of December in Eugênio de Castro, sunrise is at 05:30 and sunset at 19:20. On the last day of the month, sunrise is at 05:42 and sunset at 19:37 -03.

Sunshine

November and December, with an average of 8.7h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index in Eugênio de Castro are January through March, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 during December translates into the following directions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.