October weather forecast
São Luís de Montes Belos, Brazil

October, like September, is another tropical spring month in São Luís de Montes Belos, Brazil, with temperature in the range of an average low of 20.9°C (69.6°F) and an average high of 32°C (89.6°F).

Temperature

The advent of October reveals an average high-temperature of a still hot 32°C (89.6°F), showing minimal difference from the prior month. São Luís de Montes Belos's average low-temperature is measured at a pleasant 20.9°C (69.6°F) during October.

Heat index

The heat index for October is estimated at a torrid 38°C (100.4°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The average relative humidity in October in São Luís de Montes Belos is 63%.

Rainfall

In São Luís de Montes Belos, in October, during 20.1 rainfall days, 97mm (3.82") of precipitation is typically accumulated. Throughout the year, there are 205.3 rainfall days, and 1139mm (44.84") of precipitation is accumulated.

Daylight

In October, the average length of the day is 12h and 29min.
On the first day of the month, sunrise is at 06:03 and sunset at 18:18. On the last day of October, sunrise is at 05:43 and sunset at 18:26 -03.

Sunshine

In São Luís de Montes Belos, Brazil, the average sunshine in October is 9.2h.

UV index

The average daily maximum UV index in October is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 6 in October translates into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.