January weather forecast
Alegre, Brazil

January, like December, in Alegre, Brazil, is a moderately hot summer month, with an average temperature fluctuating between 20.3°C (68.5°F) and 29.9°C (85.8°F).

Temperature

Alegre records a slight change with January's average high-temperatures adjusting to a still warm 29.9°C (85.8°F) from December's 28.5°C (83.3°F). Alegre's nighttime temperature in January falls to an average of 20.3°C (68.5°F).

Heat index

Throughout January, the heat index is evaluated at a very hot 38°C (100.4°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In Alegre, the average relative humidity in January is 81%.

Rainfall

In Alegre, Brazil, in January, it is raining for 20.1 days, with typically 95mm (3.74") of accumulated precipitation. In Alegre, during the entire year, the rain falls for 207.5 days and collects up to 823mm (32.4") of precipitation.

Daylight

In January, the average length of the day is 13h and 14min.
On the first day of January, sunrise is at 05:08 and sunset at 18:30. On the last day of the month, sunrise is at 05:28 and sunset at 18:30 -03.

Sunshine

The average sunshine in January is 8.7h.

UV index

January through March, August, October and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, the average maximum UV index of 6 translates into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.