December weather forecast
Santa Tereza do Tocantins, Brazil

The first month of the summer, December, is still a tropical month in Santa Tereza do Tocantins, Brazil, with an average temperature fluctuating between 31.3°C (88.3°F) and 22.2°C (72°F).

Temperature

December registers an average high-temperature of a still hot 31.3°C (88.3°F), slightly varied from November's 32.6°C (90.7°F). In Santa Tereza do Tocantins, an average low-temperature of 22.2°C (72°F) is recorded during December nights.

Heat index

For most parts of December, the heat index is calculated to be a blisteringly hot 41°C (105.8°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In Santa Tereza do Tocantins, the average relative humidity in December is 78%.

Rainfall

In Santa Tereza do Tocantins, in December, it is raining for 25.8 days, with typically 129mm (5.08") of accumulated precipitation. Throughout the year, in Santa Tereza do Tocantins, there are 198 rainfall days, and 907mm (35.71") of precipitation is accumulated.

Daylight

The month with the longest days in Santa Tereza do Tocantins is December, with an average of 12h and 42min of daylight.
On the first day of the month, sunrise is at 05:39 and sunset at 18:20. On the last day of December, sunrise is at 05:53 and sunset at 18:35 -03.

Sunshine

In Santa Tereza do Tocantins, the average sunshine in December is 9.3h.

UV index

The months with the lowest UV index in Santa Tereza do Tocantins are February through May and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.