January weather forecast
Serra de São Bento, Brazil

January, like December, is another tropical summer month in Serra de São Bento, Brazil, with temperature in the range of an average low of 22.8°C (73°F) and an average high of 31.7°C (89.1°F).

Temperature

The advent of January reveals an average high-temperature of a still tropical 31.7°C (89.1°F), showing minimal difference from the prior month. January generally records an average low-temperature of 22.8°C (73°F).

Heat index

The heat index in January is computed to be an extremely hot 40°C (104°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
One should consider that heat index numbers are for shaded settings and light wind. 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 aggregate value of air's warmth and moisture to show the human-felt temperature. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In January, the average relative humidity is 72%.

Rainfall

In January, in Serra de São Bento, the rain falls for 15.7 days. Throughout January, 34mm (1.34") of precipitation is accumulated. Throughout the year, in Serra de São Bento, there are 205.7 rainfall days, and 444mm (17.48") of precipitation is accumulated.

Daylight

In January, the average length of the day is 12h and 27min.
On the first day of January in Serra de São Bento, Brazil, sunrise is at 05:11 and sunset at 17:40. On the last day of the month, sunrise is at 05:24 and sunset at 17:47 -03.

Sunshine

In Serra de São Bento, the average sunshine in January is 6.5h.

UV index

The months with the highest UV index are January, February and October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In January, a daily maximum UV index of 7 leads to the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.