January weather forecastNatal, Brazil

Weather in January

The beginning of the year in Natal, Brazil witnesses slightly warmer temperatures. During this time, there seems to be a bit more rainfall recorded at 61mm (2.4") while on average, days in January see 12.4 hours of daylight. The city experiences a mean wind speed of 20.3km/h (12.6mph), pushing the relative humidity level to an average of 74% throughout the month. January sees sea temperatures that are quite ideal for swimming while visibility stands at an impressive average of 10km (6.2mi).

Temperature

Upon the onset of January, Natal witnesses an average high-temperature of a still warm 29.6°C (85.3°F), showing a close resemblance to the prior month. Natal, during the January nights, maintains an average temperature of 25.9°C (78.6°F), closely aligned with its daytime readings.

Heat index

January's average heat index is calculated to be a torrid 35°C (95°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

In January, the average relative humidity is 74%.

Rainfall

In Natal, in January, it is raining for 20.5 days, with typically 61mm (2.4") of accumulated precipitation. In Natal, during the entire year, the rain falls for 195.4 days and collects up to 692mm (27.24") of precipitation.

Sea temperature

In Natal, in January, the average water temperature is 28.2°C (82.8°F).
Note: For swimming, diving, and enjoying other water activities, the range of 25°C (77°F) to 29°C (84.2°F) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.

Daylight

In Natal, the average length of the day in January is 12h and 25min.
On the first day of the month, sunrise is at 05:10 and sunset at 17:37. On the last day of January, sunrise is at 05:23 and sunset at 17:45 -03.

Sunshine

In Natal, the average sunshine in January is 8.2h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In January, the maximum UV index of 7 translates into these guidelines:
Deter overexposure. Protecting against the sun's effects is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. During bright days, sunglasses that offer UVA and UVB defense are recommended. Attention! UV radiation is markedly stronger with water and sand reflections.