January weather forecast
Riacho de Santana, Brazil

January, like December, is another hot summer month in Riacho de Santana, Brazil, with an average temperature varying between 19.8°C (67.6°F) and 30.9°C (87.6°F).

Temperature

Riacho de Santana's weather in January, with an average high-temperature of a still hot 30.9°C (87.6°F), subtly shifts from December's 31.1°C (88°F). In the month of January, the nighttime temperature in Riacho de Santana dips to a steady average of 19.8°C (67.6°F).

Heat index

For January, the heat index is evaluated at a sweltering 39°C (102.2°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In Riacho de Santana, the average relative humidity in January is 74%.

Rainfall

In Riacho de Santana, during January, the rain falls for 17.4 days and regularly aggregates up to 90mm (3.54") of precipitation. Throughout the year, there are 131.5 rainfall days, and 692mm (27.24") of precipitation is accumulated.

Daylight

In January, the average length of the day in Riacho de Santana, Brazil, is 12h and 49min.
On the first day of the month, sunrise is at 05:27 and sunset at 18:22. On the last day of January, in Riacho de Santana, sunrise is at 05:44 and sunset at 18:26 -03.

Sunshine

The average sunshine in January is 10.4h.

UV index

January, March through July, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 during January translates into the following directions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.