October weather forecastArco-Íris, Brazil

October

Weather in October

October, the same as September, in Arco-Íris, Brazil, is another tropical spring month, with an average temperature fluctuating between 30.8°C (87.4°F) and 19.4°C (66.9°F).

Temperature

October, with its high-temperature average of 30.8°C (87.4°F) and a low-temperature average of 19.4°C (66.9°F), is the warmest month.

Heat index

The heat index value for October is calculated to be a sweltering 36°C (96.8°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In October, the average relative humidity in Arco-Íris, Brazil, is 67%.

Rainfall

In Arco-Íris, in October, it is raining for 16.5 days, with typically 110mm (4.33") of accumulated precipitation. In Arco-Íris, during the entire year, the rain falls for 193.5 days and collects up to 1136mm (44.72") of precipitation.

Daylight

In October, the average length of the day is 12h and 37min.
On the first day of October in Arco-Íris, Brazil, sunrise is at 06:01 and sunset at 18:20. On the last day of the month, sunrise is at 05:38 and sunset at 18:32 -03.

Sunshine

In Arco-Íris, Brazil, the average sunshine in October is 8.8h.

UV index

January through March, July through December, with an average maximum UV index of 6, are months with the highest UV index in Arco-Íris. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: During October, 6 as the daily maximum UV index converts into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

October, with an average high of 30.8°C (87.4°F) and a low of 19.4°C (66.9°F), signifies the warmest month of the year.

The average high-temperature, in October, in Arco-Íris, is 30.8°C (87.4°F), while the average low-temperature is 19.4°C (66.9°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in October is calculated to be 36°C (96.8°F).

The average relative humidity in October in Arco-Íris is 67%.

In Arco-Íris, Brazil, in October, during 16.5 rainfall days, 110mm (4.33") of precipitation is typically accumulated.

The average day length in October in Arco-Íris is 12h and 37min.

In October, on the first day of the month, sunrise is at 06:01 and sunset at 18:20. On the last day of the month, in Arco-Íris, sunrise is at 05:38 and sunset at 18:32 -03.

In Arco-Íris, the average sunshine duration in October is 8.8h.

The months with the highest UV index are January through March, July through December, with an average maximum UV index of 6.

In October, the average daily maximum UV index in Arco-Íris, Brazil, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

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

Sep

October

Nov

Average high temperature

30.3°C

30.8°C

30.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11.7km/h

11.9km/h

11.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

19.7

12.6

8.3

Average UV index

Average cloud cover

Average visibility

Average temperature in October
Arco-Íris, Brazil

Average high temperature in October: 30.8°C

The warmest month (with the highest average high temperature) is October (30.8°C).
The month with the lowest average high temperature is June (24°C).

Average low temperature in October: 19.4°C

The months with the highest average low temperature are January and February (20.8°C).
The coldest month (with the lowest average low temperature) is July (14.8°C).

Average pressure in October
Arco-Íris, Brazil

Average pressure in October: 1011.8mbar

The month with the highest atmospheric pressure is July (1018.1mbar).
The month with the lowest atmospheric pressure is December (1009.9mbar).

Average wind speed in October
Arco-Íris, Brazil

Average wind speed in October: 10.7km/h

The windiest month (with the highest average wind speed) is August (11.4km/h).
The calmest month (with the lowest average wind speed) is February (7.8km/h).

Average humidity in October
Arco-Íris, Brazil

Average humidity in October: 67%

The month with the highest relative humidity is March (84%).
The month with the lowest relative humidity is August (58%).

Average rainfall in October
Arco-Íris, Brazil

Average rainfall in October: 110mm

The wettest month (with the highest rainfall) is January (203mm).
The driest month (with the least rainfall) is August (20mm).

Average rainfall days in October
Arco-Íris, Brazil

Average rainfall days in October: 16.5 days

The month with the highest number of rainy days is January (28.3 days).
The month with the least rainy days is August (5.1 days).

Average daylight in October /
Average sunshine in October
Arco-Íris, Brazil

Average daylight in October: 12h and 36min

The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 48min).

Average sunshine in October: 8h and 48min

The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 7h and 0min).

Average sunshine days in October
Arco-Íris, Brazil

Average sunshine days in October: 12.6 days

The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is January (2.6 days).

Average UV index in October
Arco-Íris, Brazil

Average UV index in October: 6

The months with the highest UV index are January, February, March, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are April, May and June (UV index 5).