January weather forecast
Cajazeiras, Brazil

January, the same as December, in Cajazeiras, Brazil, is a hot summer month, with an average temperature fluctuating between 22.5°C (72.5°F) and 32.9°C (91.2°F).

Temperature

During January, the average high-temperature is a still tropical 32.9°C (91.2°F), maintaining a close resemblance to that of the preceding month. In Cajazeiras, the average low-temperature during the month of January is an agreeable 22.5°C (72.5°F).

Heat index

In January, the heat index is calculated to be a blistering 40°C (104°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
For clarity, heat index numbers account for light winds and areas under shade. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are largely significant for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in January is 61%.

Rainfall

In Cajazeiras, in January, during 20.8 rainfall days, 91mm (3.58") of precipitation is typically accumulated. Throughout the year, there are 161.9 rainfall days, and 582mm (22.91") of precipitation is accumulated.

Daylight

In Cajazeiras, the average length of the day in January is 12h and 28min.
On the first day of the month, sunrise is at 05:22 and sunset at 17:53. On the last day of January, sunrise is at 05:35 and sunset at 17:59 -03.

Sunshine

In Cajazeiras, the average sunshine in January is 8.6h.

UV index

January through March, August through December, with an average maximum UV index of 7, are months with the highest UV index in Cajazeiras. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 7 in January suggests the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.