January weather forecast
Arauá, Brazil

January, the same as December, in Arauá, Brazil, is another tropical summer month, with an average temperature ranging between min 23.3°C (73.9°F) and max 31°C (87.8°F).

Temperature

The shift into January uncovers an average high-temperature of a still tropical 31°C (87.8°F), subtly different from the previous month. In January, the temperature in Arauá drops to an average of 23.3°C (73.9°F) at night.

Heat index

For most parts of January, the heat index is appraised at a torrid 39°C (102.2°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. 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. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

January through March, with an average relative humidity of 73%, are the least humid months.

Rainfall

In Arauá, during January, the rain falls for 14.9 days and regularly aggregates up to 28mm (1.1") of precipitation. In Arauá, during the entire year, the rain falls for 203.7 days and collects up to 514mm (20.24") of precipitation.

Daylight

In January, the average length of the day is 12h and 42min.
On the first day of the month, sunrise is at 05:10 and sunset at 17:57. On the last day of January, sunrise is at 05:25 and sunset at 18:01 -03.

Sunshine

With an average of 9.2h of sunshine, January has the most sunshine of the year in Arauá.

UV index

January through April, October through December, with an average maximum UV index of 7, are months with the highest UV index in Arauá. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In January, the UV index of 7 transforms into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.