October weather forecast
Iaçu, Brazil

October is a hot spring month in Iaçu, Brazil, with temperature in the range of an average low of 20.6°C (69.1°F) and an average high of 31.2°C (88.2°F).

Temperature

The onset of October brings with it an average high-temperature of a hot 31.2°C (88.2°F), showing a negligible variation from the month before. Nightly temperatures in Iaçu drop to an average low of 20.6°C (69.1°F) in October.

Heat index

October's mean heat index is calculated to be a torrid 38°C (100.4°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

October is the least humid month in Iaçu, with an average relative humidity of 68%.

Rainfall

In Iaçu, in October, during 15.3 rainfall days, 46mm (1.81") of precipitation is typically accumulated. Throughout the year, there are 185.3 rainfall days, and 502mm (19.76") of precipitation is accumulated.

Daylight

The average length of the day in October in Iaçu is 12h and 23min.
On the first day of the month, sunrise is at 05:23 and sunset at 17:36. On the last day of October, sunrise is at 05:07 and sunset at 17:41 -03.

Sunshine

In October, the average sunshine in Iaçu is 6.4h.

UV index

The months with the highest UV index in Iaçu are January, February and October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 7 during October translates into the following directions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.