October weather forecastRio Uaçá, Brazil

October

Weather in October

October, like September, is another hot autumn month in Rio Uaçá, Brazil, with an average temperature fluctuating between 33.9°C (93°F) and 22.2°C (72°F).

Temperature

The temperatures reach their highest averages in October, with highs of 33.9°C (93°F) and lows of 22.2°C (72°F).

Heat index

In October, the average heat index is calculated to be a burning hot 49°C (120.2°F). Mind: Heat cramps along with heat exhaustion are anticipated. Heatstroke can develop with continued physical activity.
When referencing the heat index, its values are suitable for shady environments and light breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

October is the least humid month, with an average relative humidity of 75%.

Rainfall

The month with the least rainfall is October, when the rain falls for 10.9 days and typically collects 20mm (0.79") of precipitation.

Daylight

The average length of the day in October in Rio Uaçá is 12h and 2min.
On the first day of October, sunrise is at 06:12 and sunset at 18:17. On the last day of the month, sunrise is at 06:09 and sunset at 18:08 -03.

Sunshine

In October, the average sunshine is 8.7h.

UV index

The months with the highest UV index are July through November, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 7 during October translates into these guidelines:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Updated: Aug 10, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Rio Uaçá registers the average highest temperatures during October, with peaks of 33.9°C (93°F) and lows of 22.2°C (72°F).

The high-temperature during October is 33.9°C (93°F) and the low-temperature is 22.2°C (72°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, in October is calculated to be 49°C (120.2°F).

With an average relative humidity of 75%, October is the least humid month.

In October, the average relative humidity is 75%.

October is the month with the least rainfall. Rain falls for 10.9 days and accumulates 20mm (0.79") of precipitation.

In Rio Uaçá, during October, the rain falls for 10.9 days and regularly aggregates up to 20mm (0.79") of precipitation.

In Rio Uaçá, the average day length in October is 12h and 2min.

In October, on the first day of the month, sunrise is at 06:12 and sunset at 18:17. On the last day of the month, sunrise is at 06:09 and sunset at 18:08 -03.

In Rio Uaçá, the average sunshine duration in October is 8.7h.

The months with the highest UV index are July through November, with an average maximum UV index of 7.

In October, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S October N D

Sep

October

Nov

Average high temperature

33.6°C

33.9°C

33.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.5km/h

7.1km/h

6.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

14.4

17.2

10.7

Average UV index

Average cloud cover

Average visibility

Average temperature in October
Rio Uaçá, Brazil

Average high temperature in October: 33.9°C

The warmest month (with the highest average high temperature) is October (33.9°C).
The month with the lowest average high temperature is February (27.8°C).

Average low temperature in October: 22.2°C

The month with the highest average low temperature is April (22.5°C).
The coldest month (with the lowest average low temperature) is July (21.5°C).

Average pressure in October
Rio Uaçá, Brazil

Average pressure in October: 1010.7mbar

The month with the highest atmospheric pressure is July (1013.2mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).

Average wind speed in October
Rio Uaçá, Brazil

Average wind speed in October: 6.2km/h

The windiest month (with the highest average wind speed) is October (6.2km/h).
The calmest month (with the lowest average wind speed) is June (4.3km/h).

Average humidity in October
Rio Uaçá, Brazil

Average humidity in October: 75%

The month with the highest relative humidity is May (91%).
The month with the lowest relative humidity is October (75%).

Average rainfall in October
Rio Uaçá, Brazil

Average rainfall in October: 20mm

The wettest month (with the highest rainfall) is May (215mm).
The driest month (with the least rainfall) is October (20mm).

Average rainfall days in October
Rio Uaçá, Brazil

Average rainfall days in October: 10.9 days

The month with the highest number of rainy days is May (29.8 days).
The month with the least rainy days is October (10.9 days).

Average daylight in October /
Average sunshine in October
Rio Uaçá, Brazil

Average daylight in October: 12h and 0min

The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).

Average sunshine in October: 8h and 42min

The month with the most sunshine is September (Average sunshine: 8h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

Average sunshine days in October
Rio Uaçá, Brazil

Average sunshine days in October: 17.2 days

The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is April (0.5 days).

Average UV index in October
Rio Uaçá, Brazil

Average UV index in October: 7

The months with the highest UV index are July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June and December (UV index 6).

Average cloud cover in October
Rio Uaçá, Brazil

Average cloud cover in October: 45

The month with the most cloud cover is February (Cloud cover 77).
The month with the least cloud cover is October (Cloud cover 45).

Average visibility in October
Rio Uaçá, Brazil

Average visibility in October: 7km

The months with the highest visibility are September, October and November (7km).
The months with the lowest visibility are January, February, March, April, May, June, July, August and December (6km).