August weather forecast
Porto Alegre, Brazil

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Weather in August

In August, Porto Alegre weather moves towards warmer conditions with a rise in temperatures to 21.1°C (70°F), while the rainfall lessens to 76mm (2.99"). August acts as a bridging month between the cool, rainy winter and the warmer, drier spring. Although there is a substantial amount of cloud cover, Porto Alegre during August continues to endear itself to visitors with its pleasant weather. The increase in daylight with moderate temperatures makes sightseeing and outdoor activities quite enjoyable. The slowly ascending sea temperature adds a refreshing vibe to beach activities.

Temperature

August records an average high-temperature of a pleasant 21.1°C (70°F), indicating a minor variation from the preceding month. An average minimum temperature of 11.9°C (53.4°F) is recorded in Porto Alegre during the month of August.

Humidity

The average relative humidity in August is 78%.

Rainfall

In Porto Alegre, in August, it is raining for 12 days, with typically 76mm (2.99") of accumulated precipitation. In Porto Alegre, during the entire year, the rain falls for 148.3 days and collects up to 805mm (31.69") of precipitation.

Sea temperature

August is the month with the coldest seawater, with an average sea temperature of 15.8°C (60.4°F).
Note: For the majority of people, swimming in water at 15.8°C (60.4°F) is not enjoyable. The challenge of controlling breathing escalates as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Porto Alegre, the average length of the day in August is 11h and 4min.
On the first day of the month, sunrise is at 07:09 and sunset at 17:52. On the last day of August, sunrise is at 06:40 and sunset at 18:09 -03.

Sunshine

In August, the average sunshine is 7.3h.

UV index

In August, the average daily maximum UV index in Porto Alegre, Brazil, is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 5 during August translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

What is the average August temperature in Porto Alegre?

The high-temperature, in August, in Porto Alegre, records 21.1°C (70°F), while the low-temperature is 11.9°C (53.4°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in March is calculated to be 31°C (87.8°F).

What is the average humidity in August in Porto Alegre?

The average relative humidity in August is 78%.

How many days does it rain in August in Porto Alegre?

In Porto Alegre, during August, the rain falls for 12 days and regularly aggregates up to 76mm (2.99") of precipitation.

What is the month with the coldest sea water in Porto Alegre?

August is the month with the coldest seawater in Porto Alegre, Brazil, with an average sea temperature of 15.8°C (60.4°F).

What is the sea water temperature in August in Porto Alegre?

In Porto Alegre, the average seawater temperature in August is 15.8°C (60.4°F). For most, swimming in 15.8°C (60.4°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

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

The average day length in August in Porto Alegre is 11h and 4min.

What time are sunrise and sunset in August in Porto Alegre?

On the first day of August in Porto Alegre, sunrise is at 07:09 and sunset at 17:52. On the last day of the month, sunrise is at 06:40 and sunset at 18:09 -03.

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

In Porto Alegre, the average sunshine duration in August is 7.3h.

What is the UV index intensity in August in Porto Alegre?

In August, the average daily maximum UV index in Porto Alegre, Brazil, is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.

Average temperature in August
Porto Alegre, Brazil

Average temperature in August - Porto Alegre, Brazil
  • Average high temperature in August: 21.1°C

The warmest month (with the highest average high temperature) is February (30.5°C).
The month with the lowest average high temperature is July (18.8°C).

  • Average low temperature in August: 11.9°C

The months with the highest average low temperature are January and February (20°C).
The coldest month (with the lowest average low temperature) is July (10.6°C).

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Average pressure in August
Porto Alegre, Brazil

Average pressure in August - Porto Alegre, Brazil
  • Average pressure in August: 1019mbar

The month with the highest atmospheric pressure is July (1019.8mbar).
The month with the lowest atmospheric pressure is December (1011.4mbar).

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Average wind speed in August
Porto Alegre, Brazil

Average wind speed in August - Porto Alegre, Brazil
  • Average wind speed in August: 11.3km/h

The windiest month (with the highest average wind speed) is October (12.1km/h).
The calmest month (with the lowest average wind speed) is May (10km/h).

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Average humidity in August
Porto Alegre, Brazil

Average humidity in August - Porto Alegre, Brazil
  • Average humidity in August: 78%

The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is December (71%).

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Average rainfall in August
Porto Alegre, Brazil

Average rainfall in August - Porto Alegre, Brazil
  • Average rainfall in August: 76mm

The wettest month (with the highest rainfall) is July (103mm).
The driest month (with the least rainfall) is April (36mm).

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Average rainfall days in August
Porto Alegre, Brazil

Average rainfall days in August - Porto Alegre, Brazil
  • Average rainfall days in August: 12 days

The month with the highest number of rainy days is October (15 days).
The month with the least rainy days is April (9.8 days).

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Average sea temperature in August
Porto Alegre, Brazil

Average sea temperature in August - Porto Alegre, Brazil
  • Average sea temperature in August: 15.8°C

The best month for swimming (with the highest average sea temperature) is January (24.7°C).
The coldest month (with the lowest average sea temperature) is August (15.8°C).

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Average daylight in August /
Average sunshine in August
Porto Alegre, Brazil

Average daylight in August / Average sunshine in August - Porto Alegre, Brazil
  • Average daylight in August: 11h and 1min

The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 12min).

  • Average sunshine in August: 7h and 2min

The month with the most sunshine is December (Average sunshine: 8h and 18min).
The month with the least sunshine is September (Average sunshine: 7h and 0min).

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Average sunshine days in August
Porto Alegre, Brazil

Average sunshine days in August - Porto Alegre, Brazil
  • Average sunshine days in August: 17.3 days

The month with the most sunshine days is May (19.9 days).
The month with the least sunshine days is September (14.4 days).

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Average UV index in August
Porto Alegre, Brazil

Average UV index in August - Porto Alegre, Brazil
  • Average UV index in August: 5

The month with the highest UV index is December (UV index 7).
The months with the lowest UV index are May, June and July (UV index 4).

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Average cloud cover in August
Porto Alegre, Brazil

Average cloud cover in August - Porto Alegre, Brazil
  • Average cloud cover in August: 36

The month with the most cloud cover is September (Cloud cover 41).
The month with the least cloud cover is November (Cloud cover 32).

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Average visibility in August
Porto Alegre, Brazil

Average visibility in August - Porto Alegre, Brazil
  • Average visibility in August: 9km

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

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Porto Alegre, Brazil

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