September weather forecastVera Mendes, Brazil

September

Weather in September

The first month of the spring, September, is a torrid month in Vera Mendes, Brazil, with an average temperature ranging between min 21.8°C (71.2°F) and max 35.5°C (95.9°F).

Temperature

In September, Vera Mendes notes an average high-temperature of a fiery hot 35.5°C (95.9°F), hardly different from the preceding month. Despite a noticeable differential from daytime highs, Vera Mendes notes an average nighttime low-temperature of 21.8°C (71.2°F) in September.

Heat index

For September, the heat index is appraised at a very hot 39°C (102.2°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Research indicates the heat index considers values in shaded locales and with light winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

September is the least humid month, with an average relative humidity of 42%.

Rainfall

January through July, September through December are months with rainfall. September is the first month it rains. Throughout September, in the average 1.5 rainfall days, it receives 2mm (0.08") of precipitation. In Vera Mendes, during the entire year, the rain falls for 152.5 days and collects up to 872mm (34.33") of precipitation.

Daylight

In Vera Mendes, the average length of the day in September is 12h and 4min.
On the first day of September, sunrise is at 05:46 and sunset at 17:44. On the last day of the month, sunrise is at 05:30 and sunset at 17:40 -03.

Sunshine

The months with the most sunshine are August and September, with an average of 9.9h of sunshine.

UV index

The months with the highest UV index are September and October, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high daily UV index of 8 during September translates into the following directions:
Take all necessary measures. Eyes and skin are at risk if left unprotected. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Frequently asked questions

In Vera Mendes, 35.5°C (95.9°F) is the average high-temperature and 21.8°C (71.2°F) is the average low-temperature during September. In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 39°C (102.2°F).

The least humid month is September, with an average relative humidity of 42%.

In Vera Mendes, the average relative humidity in September is 42%.

September is the first month it rains. Throughout September, in the average 1.5 rainfall days, it receives 2mm (0.08") of precipitation.

The average day length in September is 12h and 4min.

In September, on the first day of the month, sunrise is at 05:46 and sunset at 17:44. On the last day of the month, sunrise is at 05:30 and sunset at 17:40 -03.

The months with the most sunshine are August and September, with an average of 9.9h of sunshine.

In September, the average sunshine duration in Vera Mendes is 9.9h.

The months with the highest UV index are September and October, with an average maximum UV index of 8.

In September, the average daily maximum UV index is 8. A UV Index value of 8 to 10 symbolizes a very high hazard to health from unsafe 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 September
Vera Mendes, Brazil

  • Average high temperature in September: 35.5°C

The warmest month (with the highest average high temperature) is October (36°C).
The months with the lowest average high temperature are March and April (31.3°C).

  • Average low temperature in September: 21.8°C

The month with the highest average low temperature is November (24.9°C).
The coldest month (with the lowest average low temperature) is July (19.8°C).

Average pressure in September
Vera Mendes, Brazil

  • Average pressure in September: 1012.9mbar

The month with the highest atmospheric pressure is July (1014.8mbar).
The month with the lowest atmospheric pressure is November (1009.5mbar).

Average wind speed in September
Vera Mendes, Brazil

  • Average wind speed in September: 16.7km/h

The windiest month (with the highest average wind speed) is July (16.9km/h).
The calmest month (with the lowest average wind speed) is March (8.1km/h).

Average humidity in September
Vera Mendes, Brazil

  • Average humidity in September: 42%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (42%).

Average rainfall in September
Vera Mendes, Brazil

  • Average rainfall in September: 2mm

The wettest month (with the highest rainfall) is March (200mm).
The driest month (with the least rainfall) is August (0mm).

Average rainfall days in September
Vera Mendes, Brazil

  • Average rainfall days in September: 1.5 days

The month with the highest number of rainy days is March (26.8 days).
The month with the least rainy days is August (0.3 days).

Average daylight in September /
Average sunshine in September
Vera Mendes, Brazil

  • Average daylight in September: 12h and 6min

The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).

  • Average sunshine in September: 9h and 54min

The months with the most sunshine are August and September (Average sunshine: 9h and 54min).
The month with the least sunshine is April (Average sunshine: 7h and 36min).

Average sunshine days in September
Vera Mendes, Brazil

  • Average sunshine days in September: 28.4 days

The month with the most sunshine days is August (30.5 days).
The month with the least sunshine days is March (3.3 days).

Average UV index in September
Vera Mendes, Brazil

  • Average UV index in September: 8

The months with the highest UV index are September and October (UV index 8).
The months with the lowest UV index are February and April (UV index 6).

Average cloud cover in September
Vera Mendes, Brazil

  • Average cloud cover in September: 13

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 12).

Average visibility in September
Vera Mendes, Brazil

  • Average visibility in September: 10km

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