December weather forecast
Itamari, Brazil

The first month of the summer, December, is a hot month in Itamari, Brazil, with an average temperature fluctuating between 30.4°C (86.7°F) and 19.5°C (67.1°F).

Temperature

December registers an average high-temperature of a tropical 30.4°C (86.7°F), slightly varied from November's 29.1°C (84.4°F). During December, Itamari witnesses a consistent average low-temperature of 19.5°C (67.1°F).

Heat index

The heat index value for December is estimated at a blistering 40°C (104°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The average relative humidity in December is 82%.

Rainfall

In Itamari, during December, the rain falls for 19 days and regularly aggregates up to 55mm (2.17") of precipitation. Throughout the year, there are 241.8 rainfall days, and 524mm (20.63") of precipitation is accumulated.

Daylight

December has the longest days of the year in Itamari, Brazil, with an average of 12h and 54min of daylight.
On the first day of December in Itamari, sunrise is at 05:01 and sunset at 17:54. On the last day of the month, sunrise is at 05:14 and sunset at 18:09 -03.

Sunshine

In Itamari, the average sunshine in December is 7.5h.

UV index

The months with the highest UV index are January through May, September through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 6 suggests these recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.