January weather forecast
Jaru, Brazil

January, the same as December, is another warm summer month in Jaru, Brazil, with an average temperature fluctuating between 21.9°C (71.4°F) and 28.8°C (83.8°F).

Temperature

The commencement of January records an average high-temperature of a still warm 28.8°C (83.8°F), barely varying from December's 29.5°C (85.1°F). An average nighttime temperature of 21.9°C (71.4°F) is noted in Jaru, Brazil, during the month of January.

Heat index

During January, the heat index is evaluated at a sweltering 37°C (98.6°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In January, the average relative humidity is 91%.

Rainfall

The month with the most rainfall is January, when the rain falls for 29.8 days and typically aggregates up to 272mm (10.71") of precipitation.

Daylight

In Jaru, the average length of the day in January is 12h and 39min.
On the first day of the month, sunrise is at 05:51 and sunset at 18:35. On the last day of January, sunrise is at 06:06 and sunset at 18:40 -04.

Sunshine

In Jaru, the average sunshine in January is 5.5h.

UV index

The months with the lowest UV index are January through June, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In January, a daily maximum UV index of 6 leads to the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.