January weather forecast
Jacaraú, Brazil

January, like December, is another hot summer month in Jacaraú, Brazil, with an average temperature varying between 30.8°C (87.4°F) and 24.2°C (75.6°F).

Temperature

As December transitions into January, the average high-temperature rests at a still tropical 30.8°C (87.4°F), maintaining a close resemblance to the previous month. Jacaraú records an average low of 24.2°C (75.6°F) throughout the nights in January.

Heat index

The heat index for January is computed to be a fiery hot 38°C (100.4°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely vital to babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In January, the average relative humidity is 73%.

Rainfall

In Jacaraú, during January, the rain falls for 14.8 days and regularly aggregates up to 29mm (1.14") of precipitation. In Jacaraú, during the entire year, the rain falls for 199.6 days and collects up to 460mm (18.11") of precipitation.

Daylight

In January, the average length of the day is 12h and 28min.
On the first day of January in Jacaraú, sunrise is at 05:09 and sunset at 17:39. On the last day of the month, sunrise is at 05:22 and sunset at 17:46 -03.

Sunshine

The months with the most sunshine are January, March and November, with an average of 7.8h of sunshine.

UV index

January through March, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 7 in January, converts into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.