January weather forecastPrainha, Brazil

Weather in January

January, the same as December, in Prainha, Brazil, is another hot summer month, with temperature in the range of an average high of 31.7°C (89.1°F) and an average low of 23.1°C (73.6°F).

Temperature

The initiation of January sees an average high-temperature of a still hot 31.7°C (89.1°F), showing minor variations from the previous month. Prainha witnesses an average low-temperature of 23.1°C (73.6°F) throughout the month of January.

Heat index

The heat index in January is calculated to be a blisteringly hot 42°C (107.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in January in Prainha is 78%.

Rainfall

In Prainha, in January, it is raining for 24.5 days, with typically 113mm (4.45") of accumulated precipitation. Throughout the year, there are 238.8 rainfall days, and 1168mm (45.98") of precipitation is accumulated.

Daylight

In Prainha, Brazil, the average length of the day in January is 12h and 13min.
On the first day of the month, sunrise is at 06:30 and sunset at 18:44. On the last day of January, sunrise is at 06:41 and sunset at 18:53 -03.

Sunshine

In January, the average sunshine in Prainha is 7h.

UV index

The months with the lowest UV index are January through May, 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 radiation for ordinary individuals.
Note: In January, the maximum UV index of 6 transforms into these recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. 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. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.