October weather forecast
Calumbi, Brazil

October, the same as September, in Calumbi, Brazil, is another hot spring month, with an average temperature ranging between min 21.1°C (70°F) and max 33.4°C (92.1°F).

Temperature

The advent of October reveals an average high-temperature of a still tropical 33.4°C (92.1°F), showing minimal difference from the prior month. Against the high October temperatures, Calumbi records an average drop to a pleasant 21.1°C (70°F) at night.

Heat index

In October, the heat index is calculated to be a fiery hot 38°C (100.4°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In Calumbi, Brazil, the average relative humidity in October is 52%.

Rainfall

In October, in Calumbi, the rain falls for 6.5 days. Throughout October, 18mm (0.71") of precipitation is accumulated. Throughout the year, in Calumbi, there are 140.8 rainfall days, and 430mm (16.93") of precipitation is accumulated.

Daylight

In Calumbi, the average length of the day in October is 12h and 17min.
On the first day of October in Calumbi, sunrise is at 05:16 and sunset at 17:27. On the last day of the month, sunrise is at 05:04 and sunset at 17:27 -03.

Sunshine

The month with the most sunshine is October, with an average of 9.4h of sunshine.

UV index

February, March, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: In October, the maximum UV index of 7 transforms into these recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.