January weather forecast
Serra Preta, Brazil

January, like December, is another hot summer month in Serra Preta, Brazil, with an average temperature fluctuating between 21.5°C (70.7°F) and 32.4°C (90.3°F).

Temperature

As December transitions into January, Serra Preta records an average high-temperature of a still tropical 32.4°C (90.3°F), consistent with the preceding month. Serra Preta observes an average nighttime temperature of 21.5°C (70.7°F) during January.

Heat index

Throughout January, the heat index is calculated to be a scorching 42°C (107.6°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. 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 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in January is 72%.

Rainfall

In Serra Preta, in January, during 17.3 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Serra Preta, during the entire year, the rain falls for 222.1 days and collects up to 403mm (15.87") of precipitation.

Daylight

In January, the average length of the day is 12h and 44min.
On the first day of the month, sunrise is at 05:15 and sunset at 18:05. On the last day of January, sunrise is at 05:31 and sunset at 18:09 -03.

Sunshine

In January, the average sunshine in Serra Preta is 9.4h.

UV index

The months with the highest UV index in Serra Preta are January through March and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: An average UV index of 7 in January transforms into this advice:
Deter overexposure. Protecting against the sun's effects is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.