December weather forecast
Guajeru, Brazil

December, the first month of the summer in Guajeru, is still a warm month, with an average temperature fluctuating between 19.5°C (67.1°F) and 29.5°C (85.1°F).

Temperature

December observes an average high-temperature of a still moderately hot 29.5°C (85.1°F), marking an insignificant difference from November's 29.6°C (85.3°F). Throughout the month of December, Guajeru witnesses an average low-temperature of 19.5°C (67.1°F).

Heat index

The heat index value for December is evaluated at a very hot 35°C (95°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Guajeru, Brazil, the average relative humidity in December is 76%.

Rainfall

December is the month with the most rainfall. Rain falls for 17.7 days and accumulates 102mm (4.02") of precipitation.

Daylight

With an average of 13h and 0min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:09 and sunset at 18:04. On the last day of December, sunrise is at 05:21 and sunset at 18:20 -03.

Sunshine

In December, the average sunshine in Guajeru is 9.3h.

UV index

The average daily maximum UV index in December in Guajeru is 6. A UV Index value 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 in December converts into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.