September weather forecast
Porto Alegre do Tocantins, Brazil

September

Weather in September

September, the first month of the spring in Porto Alegre do Tocantins, is still a tropical month, with an average temperature ranging between min 21.2°C (70.2°F) and max 33.9°C (93°F).

Temperature

September registers as the month with the highest average temperatures, reaching 33.9°C (93°F) at its peak and 21.2°C (70.2°F) at the lowest.

Humidity

September is the least humid month, with an average relative humidity of 37%.

Rainfall

In Porto Alegre do Tocantins, Brazil, during September, the rain falls for 3.6 days and regularly aggregates up to 8mm (0.31") of precipitation. In Porto Alegre do Tocantins, during the entire year, the rain falls for 189.7 days and collects up to 1222mm (48.11") of precipitation.

Daylight

In September, the average length of the day is 12h and 2min.
On the first day of September, sunrise is at 06:11 and sunset at 18:04. On the last day of the month, sunrise is at 05:51 and sunset at 18:04 -03.

Sunshine

In September, the average sunshine is 10.8h.

UV index

August and September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: In September, the UV index of 7 transforms into the following advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Frequently asked questions

What is the hottest time of year?
With average high temperatures of 33.9°C (93°F) and lows of 21.2°C (70.2°F), September is the warmest month.
How hot is it in September?
In Porto Alegre do Tocantins, 33.9°C (93°F) is the average high-temperature and 21.2°C (70.2°F) is the average low-temperature during September. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 32°C (89.6°F).
What is the least humid month?
With an average relative humidity of 37%, September is the least humid month.
What is the average humidity in September?
The average relative humidity in September is 37%.
How much does it rain in September?
In September, the rain falls for 3.6 days. Throughout September, 8mm (0.31") of precipitation is accumulated.
How many hours of daylight does Porto Alegre do Tocantins have in September?
The average day length in September is 12h and 2min.
What time are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 06:11 and sunset at 18:04. On the last day of the month, in Porto Alegre do Tocantins, sunrise is at 05:51 and sunset at 18:04 -03.
How long on average sun shines in September?
In Porto Alegre do Tocantins, Brazil, the average sunshine duration in September is 10.8h.
When is the highest UV index in Porto Alegre do Tocantins?
The months with the highest UV index are August and September, with an average maximum UV index of 7.
What is the UV index intensity in September?
In Porto Alegre do Tocantins, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health 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 September
Porto Alegre do Tocantins, Brazil
  • Average high temperature in September: 33.9°C

The warmest month (with the highest average high temperature) is September (33.9°C).
The months with the lowest average high temperature are January, April and May (28.3°C).

  • Average low temperature in September: 21.2°C

The month with the highest average low temperature is October (22.3°C).
The coldest month (with the lowest average low temperature) is July (18.4°C).

Average pressure in September
Porto Alegre do Tocantins, Brazil
  • Average pressure in September: 1013.3mbar

The month with the highest atmospheric pressure is July (1016.4mbar).
The month with the lowest atmospheric pressure is November (1010.8mbar).

Average wind speed in September
Porto Alegre do Tocantins, Brazil
  • Average wind speed in September: 12.1km/h

The windiest month (with the highest average wind speed) is August (12.8km/h).
The calmest month (with the lowest average wind speed) is March (6km/h).

Average humidity in September
Porto Alegre do Tocantins, Brazil
  • Average humidity in September: 37%

The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is September (37%).

Average rainfall in September
Porto Alegre do Tocantins, Brazil
  • Average rainfall in September: 8mm

The wettest month (with the highest rainfall) is March (207mm).
The driest month (with the least rainfall) is July (0mm).

Average rainfall days in September
Porto Alegre do Tocantins, Brazil
  • Average rainfall days in September: 3.6 days

The month with the highest number of rainy days is March (28 days).
The month with the least rainy days is August (0.6 days).

Average daylight in September /
Average sunshine in September
Porto Alegre do Tocantins, Brazil
  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 30min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is October (Average sunshine: 10h and 54min).
The month with the least sunshine is May (Average sunshine: 7h and 0min).

Average sunshine days in September
Porto Alegre do Tocantins, Brazil
  • Average sunshine days in September: 26.1 days

The month with the most sunshine days is July (30.3 days).
The month with the least sunshine days is March (2.3 days).

Average UV index in September
Porto Alegre do Tocantins, Brazil
  • Average UV index in September: 7

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

Average cloud cover in September
Porto Alegre do Tocantins, Brazil
  • Average cloud cover in September: 13

The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 11).

Average visibility in September
Porto Alegre do Tocantins, Brazil
  • Average visibility in September: 10km

The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, March and April (8km).

englishespañol中文
Share