January weather forecast
São Félix do Piauí, Brazil

January, like December, is another hot summer month in São Félix do Piauí, Brazil, with an average temperature varying between 22.9°C (73.2°F) and 31.8°C (89.2°F).

Temperature

São Félix do Piauí records an average high-temperature of a still hot 31.8°C (89.2°F) as January arrives, nearly mirroring the previous month's climate. In the month of January, the average temperature in São Félix do Piauí dips to a pleasant 22.9°C (73.2°F) during the night.

Heat index

The heat index value during January is estimated at a scorching 42°C (107.6°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In São Félix do Piauí, Brazil, the average relative humidity in January is 76%.

Rainfall

In São Félix do Piauí, in January, it is raining for 26.3 days, with typically 232mm (9.13") of accumulated precipitation. In São Félix do Piauí, during the entire year, the rain falls for 220.8 days and collects up to 1560mm (61.42") of precipitation.

Daylight

In January, the average length of the day is 12h and 25min.
On the first day of January, sunrise is at 05:37 and sunset at 18:05. On the last day of the month, sunrise is at 05:50 and sunset at 18:12 -03.

Sunshine

In January, the average sunshine in São Félix do Piauí is 8.6h.

UV index

In January, the average daily maximum UV index in São Félix do Piauí is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 7 in January translates into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.