January weather forecast
São Fidélis, Brazil

January is a tropical summer month in São Fidélis, Brazil, with an average temperature varying between 30.3°C (86.5°F) and 22.4°C (72.3°F).

Temperature

January's beginning signals an average high-temperature of a hot 30.3°C (86.5°F), barely different from December's 29.2°C (84.6°F). The nighttime temperature in São Fidélis dips to an agreeable 22.4°C (72.3°F) on average during January.

Heat index

January's average heat index is appraised at a fiery hot 39°C (102.2°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In São Fidélis, the average relative humidity in January is 81%.

Rainfall

In São Fidélis, in January, it is raining for 12.7 days, with typically 58mm (2.28") of accumulated precipitation. Throughout the year, there are 151.4 rainfall days, and 609mm (23.98") of precipitation is accumulated.

Daylight

In January, the average length of the day is 13h and 17min.
On the first day of the month, sunrise is at 05:07 and sunset at 18:33. On the last day of January, in São Fidélis, sunrise is at 05:27 and sunset at 18:32 -03.

Sunshine

The average sunshine in January in São Fidélis is 8.9h.

UV index

January is the month with the highest UV index, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, a daily UV index of 7 turns into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.