October weather forecast
Barcarena, Brazil

October, like September, is a hot spring month in Barcarena, Brazil, with an average temperature varying between 33.7°C (92.7°F) and 23.9°C (75°F).

Temperature

Barcarena's warmest period falls in October and November, when the average high-temperatures ascend to 33.7°C (92.7°F).

Heat index

The heat index in October is estimated at a life-threatening hot 47°C (116.6°F). Remain alert: Heat exhaustion and heat cramps are predicted. Extended effort can lead to heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. 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 are largely significant for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The months with the lowest humidity in Barcarena are October and November, with an average relative humidity of 72%.

Rainfall

In Barcarena, in October, during 19.9 rainfall days, 50mm (1.97") of precipitation is typically accumulated. Throughout the year, in Barcarena, there are 283.5 rainfall days, and 1348mm (53.07") of precipitation is accumulated.

Sea temperature

September and October, with an average sea temperature of 27.8°C (82°F), are months with the coldest seawater.
Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

The average length of the day in October is 12h and 9min.
On the first day of the month, sunrise is at 06:00 and sunset at 18:07. On the last day of October, sunrise is at 05:52 and sunset at 18:03 -03.

Sunshine

With an average of 10.1h of sunshine, October has the most sunshine of the year in Barcarena.

UV index

January through March, May through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 7 during October translates into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.