October weather forecastSão Mateus, Brazil

October

Weather in October

October, the same as September, is another warm spring month in São Mateus, Brazil, with an average temperature fluctuating between 21.5°C (70.7°F) and 27.6°C (81.7°F).

Temperature

With the onset of October, São Mateus's average high-temperature clocks in at a still moderately hot 27.6°C (81.7°F), showing a minor fluctuation from the previous month. During the nights in October, São Mateus experiences a consistent average temperature of 21.5°C (70.7°F).

Heat index

Throughout October, the heat index is appraised at a tropical 31°C (87.8°F). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.
One should consider that heat index numbers are for shaded settings and light wind. 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 'apparent temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

In São Mateus, Brazil, the average relative humidity in October is 78%.

Rainfall

In São Mateus, Brazil, in October, during 16.5 rainfall days, 81mm (3.19") of precipitation is typically accumulated. Throughout the year, there are 194.6 rainfall days, and 770mm (30.31") of precipitation is accumulated.

Daylight

The average length of the day in October in São Mateus is 12h and 32min.
On the first day of the month, sunrise is at 05:20 and sunset at 17:37. On the last day of October, sunrise is at 04:59 and sunset at 17:46 -03.

Sunshine

October has the least sunshine of the year in São Mateus, with an average of 7h of sunshine.

UV index

The months with the lowest UV index in São Mateus are April through November, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 6 in October translates into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Employ a wide-brim hat for potent defense against up to 50% of UV rays.

Frequently asked questions

During October, São Mateus experiences an average high-temperature of 27.6°C (81.7°F) and a low-temperature of 21.5°C (70.7°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in October is appraised at 31°C (87.8°F).

The average relative humidity in October is 78%.

In São Mateus, in October, during 16.5 rainfall days, 81mm (3.19") of precipitation is typically accumulated.

In October, the average day length is 12h and 32min.

On the first day of October in São Mateus, sunrise is at 05:20 and sunset at 17:37. On the last day of the month, sunrise is at 04:59 and sunset at 17:46 -03.

The month with the least sunshine is October, with an average of 7h of sunshine.

In São Mateus, the average sunshine duration in October is 7h.

April through November, with an average maximum UV index of 6, are months with the lowest UV index in São Mateus, Brazil.

In São Mateus, Brazil, the average daily maximum UV index in October is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
São Mateus, Brazil

  • Average high temperature in October: 27.6°C

The warmest month (with the highest average high temperature) is February (30.1°C).
The month with the lowest average high temperature is July (25.7°C).

  • Average low temperature in October: 21.5°C

The month with the highest average low temperature is February (23.2°C).
The coldest month (with the lowest average low temperature) is July (19.2°C).

Average pressure in October
São Mateus, Brazil

  • Average pressure in October: 1015.6mbar

The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is December (1012.8mbar).

Average wind speed in October
São Mateus, Brazil

  • Average wind speed in October: 13.2km/h

The windiest month (with the highest average wind speed) is October (13.2km/h).
The calmest month (with the lowest average wind speed) is April (9.7km/h).

Average humidity in October
São Mateus, Brazil

  • Average humidity in October: 78%

The months with the highest relative humidity are March, April, June, November and December (82%).
The month with the lowest relative humidity is September (76%).

Average rainfall in October
São Mateus, Brazil

  • Average rainfall in October: 81mm

The wettest month (with the highest rainfall) is December (143mm).
The driest month (with the least rainfall) is September (17mm).

Average rainfall days in October
São Mateus, Brazil

  • Average rainfall days in October: 16.5 days

The month with the highest number of rainy days is March (20.7 days).
The month with the least rainy days is September (11.1 days).

Average daylight in October /
Average sunshine in October
São Mateus, Brazil

  • Average daylight in October: 12h and 30min

The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 0min).

  • Average sunshine in October: 7h

The month with the most sunshine is February (Average sunshine: 9h).
The month with the least sunshine is October (Average sunshine: 7h).

Average sunshine days in October
São Mateus, Brazil

  • Average sunshine days in October: 11.6 days

The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is March (7.8 days).

Average UV index in October
São Mateus, Brazil

  • Average UV index in October: 6

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

Average cloud cover in October
São Mateus, Brazil

  • Average cloud cover in October: 50

The month with the most cloud cover is November (Cloud cover 52).
The month with the least cloud cover is February (Cloud cover 32).

Average visibility in October
São Mateus, Brazil

  • Average visibility in October: 10km

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