December weather forecast
Tomar do Geru, Brazil

The first month of the summer, December, is still a hot month in Tomar do Geru, Brazil, with an average temperature fluctuating between 32.3°C (90.1°F) and 21.2°C (70.2°F).

Temperature

The advent of December denotes an average high-temperature of a still hot 32.3°C (90.1°F), subtly different from November's 31.5°C (88.7°F). An average low-temperature of 21.2°C (70.2°F) is anticipated throughout the nights in Tomar do Geru during December.

Heat index

Throughout December, the heat index is computed to be a scorching 42°C (107.6°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The months with the lowest humidity in Tomar do Geru are February, March and December, with an average relative humidity of 72%.

Rainfall

In December, in Tomar do Geru, the rain falls for 11.6 days. Throughout December, 34mm (1.34") of precipitation is accumulated. Throughout the year, in Tomar do Geru, there are 201.7 rainfall days, and 430mm (16.93") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 12h and 48min of daylight.
On the first day of December, sunrise is at 04:58 and sunset at 17:42. On the last day of the month, sunrise is at 05:11 and sunset at 17:58 -03.

Sunshine

The average sunshine in December in Tomar do Geru is 7.3h.

UV index

The months with the highest UV index are January through March, November and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 7 in December converts into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.