January weather forecast
São Gonçalo, Brazil

Starting the year off in São Gonçalo, Brazil, January brings the heat with the highest humidity level, registering at 80%. The tropical climate of the city offers an ideal beach-loving atmosphere considering the rise in both temperature and daylight hours. The sunlight duration makes outdoor activates available for longer hours. It's a significant month for rainfall as well, offering a fresh retreat from the day's high temperatures. January could be seen as an ideal urban jungle haven for those who appreciate radiant warmth.

Temperature

The transition from December to January sees average high-temperatures adjusting to a still warm 29.3°C (84.7°F), from a not significantly different 28°C (82.4°F). The temperature in São Gonçalo, Brazil, lowers to an average of 23.2°C (73.8°F) during January nights.

Heat index

The heat index value during January is estimated at a very hot 36°C (96.8°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 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 body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In São Gonçalo, the average relative humidity in January is 80%.

Rainfall

In São Gonçalo, Brazil, in January, during 18.5 rainfall days, 93mm (3.66") of precipitation is typically accumulated. In São Gonçalo, during the entire year, the rain falls for 179.5 days and collects up to 747mm (29.41") of precipitation.

Daylight

In January, the average length of the day in São Gonçalo is 13h and 21min.
On the first day of January in São Gonçalo, sunrise is at 05:10 and sunset at 18:40. On the last day of the month, sunrise is at 05:31 and sunset at 18:39 -03.

Sunshine

In São Gonçalo, the average sunshine in January is 8.5h.

UV index

The months with the highest UV index are January and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 7 in January translates into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.