January weather forecast
Ariranha, Brazil

January, the same as December, is another warm summer month in Ariranha, Brazil, with an average temperature varying between 28.8°C (83.8°F) and 20.7°C (69.3°F).

Temperature

January's arrival shows an average high-temperature of a still moderately hot 28.8°C (83.8°F), hardly different from the previous month. An average low-temperature of 20.7°C (69.3°F) is common during the nights of January.

Heat index

For January, the heat index is computed to be a fiery hot 35°C (95°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

The average relative humidity in January in Ariranha is 84%.

Rainfall

January is the month with the most rainfall. Rain falls for 28.7 days and accumulates 226mm (8.9") of precipitation.

Daylight

In January, the average length of the day in Ariranha is 13h and 15min.
On the first day of the month, sunrise is at 05:36 and sunset at 19:00. On the last day of January, in Ariranha, Brazil, sunrise is at 05:56 and sunset at 19:00 -03.

Sunshine

January has the least sunshine of the year in Ariranha, with an average of 7h of sunshine.

UV index

The months with the highest UV index are January through April, June through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In January, the maximum UV index of 6 suggests these recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Enhance your sun protection with tightly woven, yet airy clothing.