January weather forecast
Macapá, Brazil

On an average, one can expect moderate temperature, high humidity, and ample rainfall in Macapá during January. Sight visibility is usually up to 9 km. The area experiences the highest rate of rainfall experienced all year, registering a significant total rainfall of 294mm (11.57"). This affects the temperature of the sea, despite the sun shining for approximately 6.7 hours a day, Sea temperature remains moderate, making water activities pleasant.

Temperature

Macapá experiences a recorded average high-temperature of a moderately hot 29.6°C (85.3°F) in January, closely aligned with December's 31.1°C (88°F). Macapá, during the month of January, experiences an average low-temperature of 24.3°C (75.7°F).

Heat index

The heat index in January is evaluated at a very hot 37°C (98.6°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. One's perception of temperature can vary depending on physical 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 extremely significant for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in January in Macapá is 82%.

Rainfall

In Macapá, Brazil, in January, during 29.6 rainfall days, 294mm (11.57") of precipitation is typically accumulated. Throughout the year, in Macapá, Brazil, there are 280.7 rainfall days, and 2496mm (98.27") of precipitation is accumulated.

Sea temperature

In Macapá, in January, the average water temperature is 27.9°C (82.2°F).
Note: Ideal surface water temperatures for any water activity fall between 25°C (77°F) and 29°C (84.2°F), offering maximum enjoyment for lengthened periods.

Daylight

In January, the average length of the day is 12h and 7min.
On the first day of January, sunrise is at 06:24 and sunset at 18:31. On the last day of the month, sunrise is at 06:34 and sunset at 18:41 -03.

Sunshine

The average sunshine in January in Macapá is 6.7h.

UV index

The months with the lowest UV index are January through April and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 6 in January translates into this advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Caution! Sand and water reflections can notably increase the UV radiation intensity.