January weather forecast
Cajueiro, Brazil

January, the same as December, in Cajueiro, Brazil, is another hot summer month, with temperature in the range of an average high of 31°C (87.8°F) and an average low of 22.3°C (72.1°F).

Temperature

As Cajueiro steps into January, the average high-temperature holds at a still tropical 31°C (87.8°F), hinting at a minor fluctuation from the prior month. The average temperature drops to an agreeable 22.3°C (72.1°F) during the night in the month of January.

Heat index

The heat index value for January is computed to be a sweltering 39°C (102.2°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The average relative humidity in January is 74%.

Rainfall

In Cajueiro, during January, the rain falls for 12.3 days and regularly aggregates up to 20mm (0.79") of precipitation. Throughout the year, in Cajueiro, there are 189 rainfall days, and 375mm (14.76") of precipitation is accumulated.

Daylight

In Cajueiro, the average length of the day in January is 12h and 36min.
On the first day of January in Cajueiro, sunrise is at 05:08 and sunset at 17:47. On the last day of the month, sunrise is at 05:22 and sunset at 17:53 -03.

Sunshine

In Cajueiro, the average sunshine in January is 7.9h.

UV index

The months with the highest UV index in Cajueiro are January through March, November and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 7 during January translates into the following directions:
Escape overexposure. People with light skin may incur burns in fewer than 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.