October weather forecast
Pires do Rio, Brazil

October, like September, is another tropical spring month in Pires do Rio, Brazil, with temperature in the range of an average high of 30.8°C (87.4°F) and an average low of 19.7°C (67.5°F).

Temperature

October's onset brings an average high-temperature of a still hot 30.8°C (87.4°F), showing a minute difference from September's 31.8°C (89.2°F). October nights in Pires do Rio are marked by an average low-temperature of 19.7°C (67.5°F).

Heat index

October's average heat index is computed to be a very hot 36°C (96.8°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. 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. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are particularly relevant to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In October, the average relative humidity in Pires do Rio is 65%.

Rainfall

In Pires do Rio, during October, the rain falls for 21.6 days and regularly aggregates up to 169mm (6.65") of precipitation. In Pires do Rio, during the entire year, the rain falls for 222.7 days and collects up to 1699mm (66.89") of precipitation.

Daylight

In October, the average length of the day is 12h and 30min.
On the first day of October in Pires do Rio, sunrise is at 05:54 and sunset at 18:10. On the last day of the month, sunrise is at 05:34 and sunset at 18:18 -03.

Sunshine

In October, the average sunshine in Pires do Rio is 8.8h.

UV index

The months with the highest UV index are January, July through October, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 6 in October translates into this advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.