January weather forecast
Barcarena, Brazil

January, the same as December, in Barcarena, Brazil, is another hot summer month, with an average temperature fluctuating between 30.8°C (87.4°F) and 23.3°C (73.9°F).

Temperature

January reports an average high-temperature of a still hot 30.8°C (87.4°F), slightly varied from December's 32°C (89.6°F). Nighttime temperatures hover around an average low of 23.3°C (73.9°F) in January.

Heat index

In January, the heat index is estimated at a blistering 42°C (107.6°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In January, the average relative humidity is 84%.

Rainfall

In Barcarena, in January, during 27.3 rainfall days, 135mm (5.31") of precipitation is typically accumulated. In Barcarena, Brazil, during the entire year, the rain falls for 283.5 days and collects up to 1348mm (53.07") of precipitation.

Sea temperature

January, March and May, with an average sea temperature of 28.3°C (82.9°F), are months with the warmest seawater in Barcarena, Brazil.
Note: A water temperature from 25°C (77°F) to 29°C (84.2°F) is considered very warm and enjoyable, allowing water activities to be pleasant for extended periods without irritation.

Daylight

In Barcarena, Brazil, the average length of the day in January is 12h and 12min.
On the first day of January in Barcarena, sunrise is at 06:11 and sunset at 18:24. On the last day of the month, sunrise is at 06:22 and sunset at 18:33 -03.

Sunshine

In Barcarena, the average sunshine in January is 7.1h.

UV index

January through March, May through December, with an average maximum UV index of 7, are months with the highest UV index in Barcarena. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: In January, a daily UV index of 7 turns into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Watch out! Reflections from sand and water can surge UV radiation exposure.