October weather forecast
Riacho de Santana, Brazil

October

Weather in October

October, like September, is another hot spring month in Riacho de Santana, Brazil, with temperature in the range of an average high of 34.6°C (94.3°F) and an average low of 21.9°C (71.4°F).

Temperature

Riacho de Santana records a slight change with October's average high-temperatures adjusting to a still tropical 34.6°C (94.3°F) from September's 34.7°C (94.5°F). Throughout October nights, Riacho de Santana reports a steady thermal contrast from the day, with an average low-temperature of 21.9°C (71.4°F).

Heat index

The heat index value during October is evaluated at a blisteringly hot 40°C (104°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The average relative humidity in October is 51%.

Rainfall

In October, in Riacho de Santana, the rain falls for 9.8 days. Throughout October, 62mm (2.44") of precipitation is accumulated. In Riacho de Santana, during the entire year, the rain falls for 131.5 days and collects up to 692mm (27.24") of precipitation.

Daylight

In October, the average length of the day is 12h and 25min.
On the first day of the month, sunrise is at 05:34 and sunset at 17:48. On the last day of October, sunrise is at 05:17 and sunset at 17:53 -03.

Sunshine

In October, the average sunshine in Riacho de Santana, Brazil, is 9.3h.

UV index

February, August through October, with an average maximum UV index of 7, are months with the highest UV index in Riacho de Santana. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In October, the maximum UV index of 7 translates into these guidelines:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.

Frequently asked questions

How hot is it in Riacho de Santana in October?
The average high-temperature and low-temperature during October are 34.6°C (94.3°F) and 21.9°C (71.4°F) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in October is evaluated at 40°C (104°F).
What is the average humidity in October in Riacho de Santana?
In October, the average relative humidity is 51%.
How much does it rain in Riacho de Santana in October?
In Riacho de Santana, Brazil, in October, it is raining for 9.8 days, with typically 62mm (2.44") of accumulated precipitation.
What is the average length of the day in October in Riacho de Santana?
The average day length in October in Riacho de Santana is 12h and 25min.
When is the sunrise / sunset in October in Riacho de Santana?
In October, on the first day of the month, sunrise is at 05:34 and sunset at 17:48. On the last day of the month, in Riacho de Santana, Brazil, sunrise is at 05:17 and sunset at 17:53 -03.
How many hours of sunshine does Riacho de Santana have in October?
The average sunshine duration in October in Riacho de Santana, Brazil, is 9.3h.
When is the highest UV index in Riacho de Santana?
The months with the highest UV index are February, August through October, with an average maximum UV index of 7.
What is the UV index intensity in October in Riacho de Santana?
In October, the average daily maximum UV index in Riacho de Santana, Brazil, is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in October
Riacho de Santana, Brazil
  • Average high temperature in October: 34.6°C

The warmest month (with the highest average high temperature) is September (34.7°C).
The month with the lowest average high temperature is April (30.3°C).

  • Average low temperature in October: 21.9°C

The month with the highest average low temperature is October (21.9°C).
The coldest month (with the lowest average low temperature) is July (17.5°C).

Average pressure in October
Riacho de Santana, Brazil
  • Average pressure in October: 1012.3mbar

The month with the highest atmospheric pressure is July (1017.6mbar).
The month with the lowest atmospheric pressure is November (1011.4mbar).

Average wind speed in October
Riacho de Santana, Brazil
  • Average wind speed in October: 8km/h

The windiest month (with the highest average wind speed) is September (9km/h).
The calmest month (with the lowest average wind speed) is March (5.4km/h).

Average humidity in October
Riacho de Santana, Brazil
  • Average humidity in October: 51%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (43%).

Average rainfall in October
Riacho de Santana, Brazil
  • Average rainfall in October: 62mm

The wettest month (with the highest rainfall) is November (153mm).
The driest months (with the least rainfall) are July and August (0mm).

Average rainfall days in October
Riacho de Santana, Brazil
  • Average rainfall days in October: 9.8 days

The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (0.2 days).

Average daylight in October /
Average sunshine in October
Riacho de Santana, Brazil
  • Average daylight in October: 12h and 2min

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

  • Average sunshine in October: 9h and 2min

The month with the most sunshine is February (Average sunshine: 10h and 30min).
The month with the least sunshine is May (Average sunshine: 7h and 12min).

Average sunshine days in October
Riacho de Santana, Brazil
  • Average sunshine days in October: 20.2 days

The month with the most sunshine days is August (30.6 days).
The month with the least sunshine days is February (8.6 days).

Average UV index in October
Riacho de Santana, Brazil
  • Average UV index in October: 7

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

Average cloud cover in October
Riacho de Santana, Brazil
  • Average cloud cover in October: 24

The month with the most cloud cover is November (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 11).

Average visibility in October
Riacho de Santana, Brazil
  • Average visibility in October: 10km

The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).

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