September weather forecast
Rio do Meio, Brazil

September

Weather in September

September, the first month of the spring in Rio do Meio, is still a warm month, with an average temperature varying between 16.6°C (61.9°F) and 27.1°C (80.8°F).

Temperature

In September, Rio do Meio's weather conditions record an average high-temperature of a still warm 27.1°C (80.8°F), demonstrating little divergence from the preceding month. Rio do Meio, during the month of September, experiences an average low-temperature of 16.6°C (61.9°F).

Heat index

September's heat index is appraised at a tropical 30°C (86°F). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

With an average relative humidity of 79%, September is the least humid month.

Rainfall

September is the month with the least rainfall in Rio do Meio, Brazil. Rain falls for 15.7 days and accumulates 19mm (0.75") of precipitation.

Daylight

In Rio do Meio, the average length of the day in September is 12h and 1min.
On the first day of the month, sunrise is at 05:44 and sunset at 17:34. On the last day of September, sunrise is at 05:22 and sunset at 17:36 -03.

Sunshine

In Rio do Meio, the average sunshine in September is 6.2h.

UV index

January through April, August through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum daily UV index of 6 during September morphs into the following directions:
Fend off overexposure. Sun protection is vital. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Frequently asked questions

What are the temperatures in September?
In Rio do Meio, in September, the average high-temperature is 27.1°C (80.8°F), and the average low-temperature is 16.6°C (61.9°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in September is appraised at 30°C (86°F).
What is the least humid month?
September is the least humid month, with an average relative humidity of 79%.
What is the average humidity in September?
The average relative humidity in September is 79%.
What is the driest month?
September is the month with the least rainfall. Rain falls for 15.7 days and accumulates 19mm (0.75") of precipitation.
How many days does it rain in September?
In Rio do Meio, in September, it is raining for 15.7 days, with typically 19mm (0.75") of accumulated precipitation.
How many hours of daylight does Rio do Meio have in September?
In Rio do Meio, the average day length in September is 12h and 1min.
When is the sunrise / sunset in September?
In September, on the first day of the month, sunrise is at 05:44 and sunset at 17:34. On the last day of the month, sunrise is at 05:22 and sunset at 17:36 -03.
How many hours of sunshine does Rio do Meio have in September?
The average sunshine duration in September is 6.2h.
What are the months with the highest UV index?
The months with the highest UV index are January through April, August through December, with an average maximum UV index of 6.
What is the UV index reading in September?
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Rio do Meio, Brazil
Average temperature in September
Rio do Meio, Brazil
  • Average high temperature in September: 27.1°C

The warmest month (with the highest average high temperature) is February (29.8°C).
The month with the lowest average high temperature is July (24.8°C).

  • Average low temperature in September: 16.6°C

The month with the highest average low temperature is March (19.3°C).
The coldest month (with the lowest average low temperature) is August (15.4°C).

Average pressure in September - Rio do Meio, Brazil
Average pressure in September
Rio do Meio, Brazil
  • Average pressure in September: 1018.1mbar

The month with the highest atmospheric pressure is July (1020mbar).
The month with the lowest atmospheric pressure is December (1013.1mbar).

Average wind speed in September - Rio do Meio, Brazil
Average wind speed in September
Rio do Meio, Brazil
  • Average wind speed in September: 7.9km/h

The windiest month (with the highest average wind speed) is October (8km/h).
The calmest months (with the lowest average wind speed) are March and April (5.6km/h).

Average humidity in September - Rio do Meio, Brazil
Average humidity in September
Rio do Meio, Brazil
  • Average humidity in September: 79%

The month with the highest relative humidity is May (87%).
The month with the lowest relative humidity is September (79%).

Average rainfall in September - Rio do Meio, Brazil
Average rainfall in September
Rio do Meio, Brazil
  • Average rainfall in September: 19mm

The wettest month (with the highest rainfall) is November (83mm).
The driest month (with the least rainfall) is September (19mm).

Average rainfall days in September - Rio do Meio, Brazil
Average rainfall days in September
Rio do Meio, Brazil
  • Average rainfall days in September: 15.7 days

The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is February (12.7 days).

Average daylight in September / Average sunshine in September - Rio do Meio, Brazil
Average daylight in September /
Average sunshine in September
Rio do Meio, Brazil
  • Average daylight in September: 12h and 0min

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

  • Average sunshine in September: 6h and 1min

The month with the most sunshine is February (Average sunshine: 8h and 18min).
The month with the least sunshine is June (Average sunshine: 4h and 48min).

Average sunshine days in September - Rio do Meio, Brazil
Average sunshine days in September
Rio do Meio, Brazil
  • Average sunshine days in September: 7.2 days

The months with the most sunshine days are January and February (12.1 days).
The month with the least sunshine days is July (5.3 days).

Average UV index in September - Rio do Meio, Brazil
Average UV index in September
Rio do Meio, Brazil
  • Average UV index in September: 6

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

Average cloud cover in September - Rio do Meio, Brazil
Average cloud cover in September
Rio do Meio, Brazil
  • Average cloud cover in September: 60

The month with the most cloud cover is May (Cloud cover 70).
The month with the least cloud cover is September (Cloud cover 60).

Average visibility in September - Rio do Meio, Brazil
Average visibility in September
Rio do Meio, Brazil
  • Average visibility in September: 6km

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

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