January weather forecast
São Sebastião do Passé, Brazil

January, the same as December, in São Sebastião do Passé, Brazil, is another hot summer month, with temperature in the range of an average high of 31.9°C (89.4°F) and an average low of 21.3°C (70.3°F).

Temperature

During January, São Sebastião do Passé observes a subtle ascent to a still tropical 31.9°C (89.4°F) from December's 32°C (89.6°F) in the average high-temperature. Throughout January, an average nighttime temperature of 21.3°C (70.3°F) is experienced.

Heat index

For most parts of January, the heat index is computed to be an extremely hot 42°C (107.6°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Note that heat index values are valued for light wind and location in the shade. 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 'real feel' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to 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.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

The months with the lowest humidity are January, February and December, with an average relative humidity of 76%.

Rainfall

In São Sebastião do Passé, in January, during 17.6 rainfall days, 39mm (1.54") of precipitation is typically accumulated. Throughout the year, there are 222.4 rainfall days, and 664mm (26.14") of precipitation is accumulated.

Daylight

In São Sebastião do Passé, the average length of the day in January is 12h and 46min.
On the first day of the month, sunrise is at 05:11 and sunset at 18:02. On the last day of January, in São Sebastião do Passé, sunrise is at 05:27 and sunset at 18:06 -03.

Sunshine

With an average of 9.5h of sunshine, January has the most sunshine of the year.

UV index

The months with the highest UV index are January through March, November and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 7 during January leads to these advisories:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Enhance your sun protection with tightly woven, yet airy clothing.