August weather forecast
Porto Alegre, São Tomé and Príncipe

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Weather in August

The weather in August in Porto Alegre is quite consistent with that of July, showing a slight increase in average temperatures and rainfall. The city remains in the grip of winter, though hints of spring are starting to emerge. The overall climate remains comfortably cool, making this an opportune time for visitors seeking a tranquil vacation. August brings a unique kind of beauty to Porto Alegre, imbuing the city with a quiet charm and tranquility.

Temperature

Porto Alegre, São Tomé and Príncipe, experiences a recorded average high-temperature of a still moderately hot 24.8°C (76.6°F) in August, closely aligned with July's 24.5°C (76.1°F). Porto Alegre's temperature during August nights registers a minor decrease to an average low of 23.2°C (73.8°F).

Humidity

August through October, with an average relative humidity of 83%, are the most humid months.

Rainfall

In Porto Alegre, during August, the rain falls for 12.8 days and regularly aggregates up to 21mm (0.83") of precipitation. Throughout the year, in Porto Alegre, there are 241.7 rainfall days, and 1287mm (50.67") of precipitation is accumulated.

Daylight

In August, the average length of the day is 12h and 7min.
On the first day of the month, sunrise is at 05:36 and sunset at 17:43. On the last day of August, in Porto Alegre, São Tomé and Príncipe, sunrise is at 05:30 and sunset at 17:37 GMT.

Sunshine

With an average of 5h of sunshine, August has the least sunshine of the year.

UV index

In August, the average daily maximum UV index in Porto Alegre, São Tomé and Príncipe, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
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Frequently asked questions

What is the usual temperature for Porto Alegre in August?

In August, in Porto Alegre, the average high-temperature is 24.8°C (76.6°F), and the average low-temperature is 23.2°C (73.8°F). In May, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is appraised at 31°C (87.8°F).

What is the most humid month in Porto Alegre?

August through October, with an average relative humidity of 83%, are most humid months.

What is the average humidity in August in Porto Alegre?

In Porto Alegre, São Tomé and Príncipe, the average relative humidity in August is 83%.

How much does it rain in Porto Alegre in August?

In Porto Alegre, São Tomé and Príncipe, in August, it is raining for 12.8 days, with typically 21mm (0.83") of accumulated precipitation.

How many hours of daylight does Porto Alegre have in August?

In August, the average day length is 12h and 7min.

When are sunrise and sunset in August in Porto Alegre?

On the first day of August in Porto Alegre, São Tomé and Príncipe, sunrise is at 05:36 and sunset at 17:43. On the last day of the month, sunrise is at 05:30 and sunset at 17:37 GMT.

What is the month with the least sunshine in Porto Alegre?

August has the least sunshine of the year in Porto Alegre, with an average of 5h of sunshine.

How long on average sun shines in August in Porto Alegre?

In August, the average sunshine duration is 5h.

How high is the UV index in August in Porto Alegre?

In Porto Alegre, São Tomé and Príncipe, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.

Average temperature in August
Porto Alegre, São Tomé and Príncipe

Average temperature in August - Porto Alegre, São Tomé and Príncipe
  • Average high temperature in August: 24.8°C

The warmest month (with the highest average high temperature) is March (28.8°C).
The month with the lowest average high temperature is July (24.5°C).

  • Average low temperature in August: 23.2°C

The month with the highest average low temperature is March (27.5°C).
The coldest month (with the lowest average low temperature) is July (23°C).

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Average pressure in August
Porto Alegre, São Tomé and Príncipe

Average pressure in August - Porto Alegre, São Tomé and Príncipe
  • Average pressure in August: 1014.1mbar

The month with the highest atmospheric pressure is July (1014.3mbar).
The month with the lowest atmospheric pressure is February (1009.8mbar).

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Average wind speed in August
Porto Alegre, São Tomé and Príncipe

Average wind speed in August - Porto Alegre, São Tomé and Príncipe
  • Average wind speed in August: 17.1km/h

The windiest month (with the highest average wind speed) is July (17.7km/h).
The calmest month (with the lowest average wind speed) is December (10.8km/h).

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Average humidity in August
Porto Alegre, São Tomé and Príncipe

Average humidity in August - Porto Alegre, São Tomé and Príncipe
  • Average humidity in August: 83%

The months with the highest relative humidity are August, September and October (83%).
The month with the lowest relative humidity is March (76%).

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Average rainfall in August
Porto Alegre, São Tomé and Príncipe

Average rainfall in August - Porto Alegre, São Tomé and Príncipe
  • Average rainfall in August: 21mm

The wettest month (with the highest rainfall) is November (224mm).
The driest month (with the least rainfall) is July (9mm).

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Average rainfall days in August
Porto Alegre, São Tomé and Príncipe

Average rainfall days in August - Porto Alegre, São Tomé and Príncipe
  • Average rainfall days in August: 12.8 days

The month with the highest number of rainy days is December (28.6 days).
The month with the least rainy days is June (7.3 days).

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Average daylight in August /
Average sunshine in August
Porto Alegre, São Tomé and Príncipe

Average daylight in August / Average sunshine in August - Porto Alegre, São Tomé and Príncipe
  • Average daylight in August: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 6min).
The months with the shortest days are March and September (Average daylight: 12h and 6min).

  • Average sunshine in August: 5h and 0min

The month with the most sunshine is February (Average sunshine: 8h and 36min).
The month with the least sunshine is August (Average sunshine: 5h and 0min).

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Average sunshine days in August
Porto Alegre, São Tomé and Príncipe

Average sunshine days in August - Porto Alegre, São Tomé and Príncipe
  • Average sunshine days in August: 8 days

The month with the most sunshine days is June (16.4 days).
The month with the least sunshine days is December (1.5 days).

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Average UV index in August
Porto Alegre, São Tomé and Príncipe

Average UV index in August - Porto Alegre, São Tomé and Príncipe
  • Average UV index in August: 6

The months with the highest UV index are January, February, March, April, May, October, November and December (UV index 7).
The month with the lowest UV index is July (UV index 5).

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Average cloud cover in August
Porto Alegre, São Tomé and Príncipe

Average cloud cover in August - Porto Alegre, São Tomé and Príncipe
  • Average cloud cover in August: 65

The month with the most cloud cover is August (Cloud cover 65).
The month with the least cloud cover is February (Cloud cover 37).

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Average visibility in August
Porto Alegre, São Tomé and Príncipe

Average visibility in August - Porto Alegre, São Tomé and Príncipe
  • Average visibility in August: 10km

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

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Porto Alegre, São Tomé and Príncipe

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