January weather forecast
Nova Iguaçu, Brazil

Commencing the year, the climate in Nova Iguaçu is characterized by high humidity levels of 81% and an anticipated rainfall of 148mm (5.83"). Akin to a tropical region, this month experiences occasional showers making the city lush and vibrant. Transitioning from the high heat of the previous year, the city still experiences warmth, but with a noticeable decrease. The city offers a great escape for sun chasers as it maintains an enjoyable balance between warm temperatures and soothing breezes. A slightly higher wind speed of 6.6km/h (4.1mph) adds to the comfortable weather, making outdoor activities pleasant.

Temperature

Nova Iguaçu registers an average high-temperature of a tropical 30.1°C (86.2°F) with the arrival of January, showing minor deviation from the preceding month. In Nova Iguaçu, the nighttime temperature averages to a pleasant 21.6°C (70.9°F) during January.

Heat index

Throughout January, the heat index is appraised at a sweltering 38°C (100.4°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. 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. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in January in Nova Iguaçu is 81%.

Rainfall

The month with the most rainfall in Nova Iguaçu is January, when the rain falls for 23.6 days and typically aggregates up to 148mm (5.83") of precipitation.

Daylight

In Nova Iguaçu, Brazil, the average length of the day in January is 13h and 20min.
On the first day of the month, sunrise is at 05:12 and sunset at 18:42. On the last day of January, in Nova Iguaçu, sunrise is at 05:33 and sunset at 18:41 -03.

Sunshine

In Nova Iguaçu, the average sunshine in January is 8.1h.

UV index

In Nova Iguaçu, the average daily maximum UV index in January is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 6 during January leads to these instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.