October weather forecast
Guariba, Brazil

October, the same as September, in Guariba, Brazil, is another tropical spring month, with temperature in the range of an average low of 19.6°C (67.3°F) and an average high of 30.8°C (87.4°F).

Temperature

The transition from September to October brings an average high-temperature of a still tropical 30.8°C (87.4°F), barely different from September's 30.9°C (87.6°F). In October, Guariba experiences an average nighttime temperature of 19.6°C (67.3°F).

Heat index

In October, the heat index is computed to be a torrid 36°C (96.8°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
For clarity, heat index numbers account for light winds and areas under shade. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In Guariba, Brazil, the average relative humidity in October is 66%.

Rainfall

In Guariba, in October, during 14.4 rainfall days, 76mm (2.99") of precipitation is typically accumulated. In Guariba, during the entire year, the rain falls for 167.1 days and collects up to 688mm (27.09") of precipitation.

Daylight

In October, the average length of the day is 12h and 36min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:11. On the last day of October, in Guariba, sunrise is at 05:29 and sunset at 18:23 -03.

Sunshine

In Guariba, the average sunshine in October is 9h.

UV index

The months with the highest UV index in Guariba, Brazil, are January through March, July through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 6 in October interprets into the following advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.