January weather forecast
Guarantã, Brazil

January, like December, in Guarantã, Brazil, is another warm summer month, with an average temperature varying between 20.8°C (69.4°F) and 29.2°C (84.6°F).

Temperature

The transition into January shows a subtle variation to a still warm 29.2°C (84.6°F) from December's 29.8°C (85.6°F) in the average high-temperature. In the month of January, Guarantã records a consistent average low-temperature of 20.8°C (69.4°F).

Heat index

The heat index for January is evaluated at a torrid 36°C (96.8°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful 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.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In Guarantã, the average relative humidity in January is 83%.

Rainfall

January is the month with the most rainfall in Guarantã. Rain falls for 28.3 days and accumulates 201mm (7.91") of precipitation.

Daylight

The average length of the day in January in Guarantã is 13h and 17min.
On the first day of January in Guarantã, sunrise is at 05:38 and sunset at 19:05. On the last day of the month, sunrise is at 05:58 and sunset at 19:04 -03.

Sunshine

With an average of 7.3h of sunshine, January has the least sunshine of the year in Guarantã.

UV index

January through April, July through December, with an average maximum UV index of 6, are months with the highest UV index in Guarantã, Brazil. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 6 during January translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.