January weather forecastBarra do Rocha, Brazil

Weather in January

January, like December, is a hot summer month in Barra do Rocha, Brazil, with temperature in the range of an average low of 19.5°C (67.1°F) and an average high of 30.2°C (86.4°F).

Temperature

A minimal variation is noted in Barra do Rocha's average high-temperature at the onset of January, reaching a still hot 30.2°C (86.4°F) from December's 30.4°C (86.7°F). Barra do Rocha observes an average low-temperature of 19.5°C (67.1°F) during January nights.

Heat index

The average heat index in January is computed to be a fiery hot 39°C (102.2°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. 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 'real feel' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Barra do Rocha, the average relative humidity in January is 82%.

Rainfall

In Barra do Rocha, during January, the rain falls for 19.6 days and regularly aggregates up to 38mm (1.5") of precipitation. Throughout the year, there are 241.8 rainfall days, and 524mm (20.63") of precipitation is accumulated.

Daylight

The average length of the day in January is 12h and 52min.
On the first day of the month, sunrise is at 05:13 and sunset at 18:10. On the last day of January, sunrise is at 05:29 and sunset at 18:13 -03.

Sunshine

January and February, with an average of 8.1h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are January through May, September through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: A maximum high daily UV index of 6 during January translates into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.