October weather forecast
Cachoeira, Brazil

October, the same as September, is another warm spring month in Cachoeira, Brazil, with an average temperature varying between 29.8°C (85.6°F) and 20.4°C (68.7°F).

Temperature

With the onset of October, Cachoeira's average high-temperature clocks in at a still warm 29.8°C (85.6°F), showing a minor fluctuation from the previous month. Cachoeira temperatures generally rest at a low of 20.4°C (68.7°F) during the October nights.

Heat index

October's mean heat index is appraised at a very hot 37°C (98.6°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In Cachoeira, the average relative humidity in October is 78%.

Rainfall

In Cachoeira, in October, during 20.6 rainfall days, 45mm (1.77") of precipitation is typically accumulated. In Cachoeira, during the entire year, the rain falls for 243.3 days and collects up to 519mm (20.43") of precipitation.

Daylight

In October, the average length of the day is 12h and 23min.
On the first day of the month, sunrise is at 05:18 and sunset at 17:31. On the last day of October, in Cachoeira, Brazil, sunrise is at 05:02 and sunset at 17:36 -03.

Sunshine

In October, the average sunshine in Cachoeira is 6.5h.

UV index

The average daily maximum UV index in October is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: In October, the maximum UV index of 6 translates into these guidelines:
Resist overexposure. Safeguarding from solar damage is indispensable. 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. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.