December weather forecast
Tombos, Brazil

December, the first month of the summer in Tombos, is still a warm month, with temperature in the range of an average low of 19.9°C (67.8°F) and an average high of 28.7°C (83.7°F).

Temperature

In December, Tombos experiences a minor shift in meteorological conditions with average high-temperatures marked at a still warm 28.7°C (83.7°F), closely mirroring the climate in November. Throughout December nights, Tombos experiences a consistent temperature average of 19.9°C (67.8°F).

Heat index

For most parts of December, the heat index is estimated at a fiery hot 35°C (95°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

The average relative humidity in December is 86%.

Rainfall

December is the month with the most rainfall. Rain falls for 26.4 days and accumulates 207mm (8.15") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 24min of daylight.
On the first day of December in Tombos, sunrise is at 04:57 and sunset at 18:16. On the last day of the month, sunrise is at 05:09 and sunset at 18:32 -03.

Sunshine

In Tombos, the average sunshine in December is 7.8h.

UV index

January, February, August, September and December, with an average maximum UV index of 6, are months with the highest UV index in Tombos. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 6 in December converts into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.