January weather forecast
Caatiba, Brazil

January, the same as December, is a moderately hot summer month in Caatiba, Brazil, with an average temperature varying between 29.3°C (84.7°F) and 18.8°C (65.8°F).

Temperature

With the advent of January, Caatiba's high-temperatures adjust to a still warm 29.3°C (84.7°F), closely aligning with the preceding month. Throughout the month of January, Caatiba reports a steady low-temperature average of 18.8°C (65.8°F).

Heat index

In January, the heat index is computed to be a torrid 36°C (96.8°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. 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 of high significance for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in January in Caatiba is 83%.

Rainfall

In Caatiba, Brazil, in January, it is raining for 15.9 days, with typically 42mm (1.65") of accumulated precipitation. Throughout the year, there are 209.2 rainfall days, and 561mm (22.09") of precipitation is accumulated.

Daylight

In Caatiba, Brazil, the average length of the day in January is 12h and 54min.
On the first day of the month, sunrise is at 05:15 and sunset at 18:14. On the last day of January, in Caatiba, sunrise is at 05:32 and sunset at 18:17 -03.

Sunshine

In Caatiba, the average sunshine in January is 8.2h.

UV index

January through April, August through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index, 6 in January, converts into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.