October weather forecast
Salvaterra, Brazil

October, like September, is a hot spring month in Salvaterra, Brazil, with temperature in the range of an average low of 26.4°C (79.5°F) and an average high of 31.4°C (88.5°F).

Temperature

The warmest temperatures occur during October, when averages reach a peak of 31.4°C (88.5°F) and a low of 26.4°C (79.5°F).

Heat index

October's average heat index is calculated to be a fiery hot 39°C (102.2°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. 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', gives a temperature feeling by integrating air temperature and humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

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

Rainfall

The month with the least rainfall in Salvaterra is October, when the rain falls for 12.7 days and typically collects 29mm (1.14") of precipitation.

Daylight

In Salvaterra, Brazil, the average length of the day in October is 12h and 8min.
On the first day of October in Salvaterra, Brazil, sunrise is at 05:59 and sunset at 18:07. On the last day of the month, sunrise is at 05:53 and sunset at 18:01 -03.

Sunshine

With an average of 10.3h of sunshine, October has the most sunshine of the year.

UV index

The months with the highest UV index are February, March, May through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health 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:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.