January weather forecast
Terra Santa, Brazil

January, like December, is another hot summer month in Terra Santa, Brazil, with an average temperature fluctuating between 31.5°C (88.7°F) and 23.1°C (73.6°F).

Temperature

The transition from December to January sees an average high-temperature of a still hot 31.5°C (88.7°F), indicating a minor variance from the prior month. Terra Santa's average low-temperature in the month of January is recorded at a moderately hot 23.1°C (73.6°F).

Heat index

January's heat index is estimated at a blisteringly hot 43°C (109.4°F). Keep wary: Heat cramps along with heat exhaustion are expected. Heatstroke is a possible outcome of ongoing activity.
When assessing, remember that heat index measurements are for light winds and shaded spots. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. 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. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In Terra Santa, Brazil, the average relative humidity in January is 80%.

Rainfall

In January, in Terra Santa, the rain falls for 21.5 days. Throughout January, 67mm (2.64") of precipitation is accumulated. In Terra Santa, Brazil, during the entire year, the rain falls for 213.6 days and collects up to 640mm (25.2") of precipitation.

Daylight

In Terra Santa, the average length of the day in January is 12h and 14min.
On the first day of January, sunrise is at 06:42 and sunset at 18:56. On the last day of the month, sunrise is at 06:53 and sunset at 19:05 -03.

Sunshine

In Terra Santa, the average sunshine in January is 7.4h.

UV index

The months with the lowest UV index in Terra Santa are January through April, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 6 in January translates into this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.