October weather forecast
Barra, Brazil

October, the same as September, in Barra, Brazil, is another tropical spring month, with an average temperature ranging between max 31.8°C (89.2°F) and min 22.9°C (73.2°F).

Temperature

October is the warmest month, exhibiting average temperatures of 31.8°C (89.2°F) at the peak and 22.9°C (73.2°F) at the base.

Heat index

October's average heat index is calculated to be a sweltering 35°C (95°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In Barra, the average relative humidity in October is 54%.

Rainfall

In Barra, in October, during 7 rainfall days, 46mm (1.81") of precipitation is typically accumulated. In Barra, during the entire year, the rain falls for 121.7 days and collects up to 646mm (25.43") of precipitation.

Daylight

The average length of the day in October in Barra is 12h and 21min.
On the first day of October in Barra, sunrise is at 05:35 and sunset at 17:48. On the last day of the month, sunrise is at 05:21 and sunset at 17:51 -03.

Sunshine

In October, the average sunshine is 9.5h.

UV index

The months with the highest UV index are January through May, August through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily maximum UV index of 7 in October translates into the following instructions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.