October weather forecast
Foz do Iguaçu, Brazil

October sees Foz do Iguaçu transition fully into spring. This month records the largest amount of rainfall, with a total of 220mm (8.66"). The increased temperatures and high relative humidity echo the approaching summer season. It’s a vibrant month in Foz do Iguaçu, where visitors can enjoy the city's flourishing flora sparked by the spring warmth.

Temperature

The average high-temperature in October, at a still moderately hot 28.8°C (83.8°F), reveals a modest deviation from September's 26.9°C (80.4°F). Foz do Iguaçu's average nighttime temperatures present a clear contrast to its daytime highs, measured at a mild 15.3°C (59.5°F) in October.

Heat index

In October, the average heat index is computed to be a hot 34°C (93.2°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.

Humidity

In Foz do Iguaçu, the average relative humidity in October is 78%.

Rainfall

The month with the most rainfall is October, when the rain falls for 9 days and typically aggregates up to 220mm (8.66") of precipitation.

Daylight

In Foz do Iguaçu, the average length of the day in October is 12h and 43min.
On the first day of the month, sunrise is at 06:17 and sunset at 18:38. On the last day of October, in Foz do Iguaçu, sunrise is at 05:49 and sunset at 18:54 -03.

Sunshine

In October, the average sunshine in Foz do Iguaçu is 6.3h.

UV index

The average daily maximum UV index in October is 11. A UV Index value of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 11 in October transforms into the following instructions:
Enforce all necessary precautions, unprotected skin might burn swiftly. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Before heading out, apply sunscreen with 30 SPF or more to avoid sunburn and harmful radiation effects.