January weather forecast
Naviraí, Brazil

January, the same as December, in Naviraí, Brazil, is a hot summer month, with an average temperature fluctuating between 21.3°C (70.3°F) and 30.7°C (87.3°F).

Temperature

Naviraí's warmest weather arrives in January, when temperatures average a high of 30.7°C (87.3°F) and a low of 21.3°C (70.3°F).

Heat index

Throughout January, the heat index is appraised at an extremely hot 40°C (104°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In January, the average relative humidity is 81%.

Rainfall

In Naviraí, during January, the rain falls for 22.5 days and regularly aggregates up to 130mm (5.12") of precipitation. Throughout the year, there are 180.2 rainfall days, and 1078mm (42.44") of precipitation is accumulated.

Daylight

The average length of the day in January is 13h and 22min.
On the first day of January, sunrise is at 04:54 and sunset at 18:25. On the last day of the month, sunrise is at 05:15 and sunset at 18:24 -04.

Sunshine

In Naviraí, the average sunshine in January is 8.6h.

UV index

January through March, August through December, with an average maximum UV index of 6, are months with the highest UV index in Naviraí. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In January, the average maximum UV index of 6 translates into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.