January weather forecast
Mataraca, Brazil

January, like December, is another tropical summer month in Mataraca, Brazil, with an average temperature varying between 30.8°C (87.4°F) and 24.2°C (75.6°F).

Temperature

The introduction of January sees an average high-temperature of a still tropical 30.8°C (87.4°F), hardly deviating from December. In Mataraca, in January, the average low-temperature is a moderately hot 24.2°C (75.6°F).

Heat index

January's average heat index is calculated to be a fiery hot 38°C (100.4°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Be advised, the heat index considers values for conditions in shade and with a light breeze. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one'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 particularly relevant to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In January, the average relative humidity is 73%.

Rainfall

In Mataraca, Brazil, in January, it is raining for 14.8 days, with typically 29mm (1.14") of accumulated precipitation. In Mataraca, during the entire year, the rain falls for 199.6 days and collects up to 460mm (18.11") of precipitation.

Daylight

In January, the average length of the day is 12h and 28min.
On the first day of the month, sunrise is at 05:08 and sunset at 17:38. On the last day of January, in Mataraca, sunrise is at 05:21 and sunset at 17:45 -03.

Sunshine

January, March and November, with an average of 7.8h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index in Mataraca are January through March, September through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 7 during January translates into the following guidance:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.