January weather forecast
Vargem Grande, Brazil

January, the same as December, in Vargem Grande, Brazil, is a hot summer month, with an average temperature ranging between min 22.7°C (72.9°F) and max 30.8°C (87.4°F).

Temperature

Vargem Grande's shift into January is marked by a subtle change to a still tropical 30.8°C (87.4°F) from December's 32.4°C (90.3°F) in temperature. During the month of January, the temperature in Vargem Grande falls to an average of 22.7°C (72.9°F).

Heat index

The heat index in January is computed to be a scorching 42°C (107.6°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. 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 are extremely significant for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In January, the average relative humidity in Vargem Grande is 86%.

Rainfall

In Vargem Grande, Brazil, in January, it is raining for 27.8 days, with typically 155mm (6.1") of accumulated precipitation. Throughout the year, there are 258.8 rainfall days, and 1055mm (41.54") of precipitation is accumulated.

Daylight

In January, the average length of the day is 12h and 18min.
On the first day of January in Vargem Grande, sunrise is at 05:49 and sunset at 18:08. On the last day of the month, sunrise is at 06:01 and sunset at 18:17 -03.

Sunshine

The average sunshine in January in Vargem Grande, Brazil, is 7.2h.

UV index

January through April, June and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 6 in January translates into these instructions:
Deflect overexposure. Sun protection is a necessity. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.