May weather forecast and climate
Porto Alegre, Brazil

What is the temperature in May in Porto Alegre?

In May, in Porto Alegre, the average high-temperature is 22.1°C (71.8°F), and the average low-temperature is 13°C (55.4°F).

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

In Porto Alegre, in May, it is raining for 8 days, with typically 90mm (3.5") of accumulated precipitation.

What is the sea temperature in May in Porto Alegre?

The average seawater temperature, in May, in Porto Alegre, is 20.3°C (68.5°F). For swimming, a surface water temperature of 20.3°C (68.5°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
Average temperature in May - Porto Alegre, Brazil
  • Average high temperature in May: 22.1°C

The warmest month (with the highest average high temperature) is January (30.2°C).
The month with the lowest average high temperature is June (19.4°C).

  • Average low temperature in May: 13°C

The month with the highest average low temperature is February (20.8°C).
Coldest months (with the lowest average low temperature) are June and July (10.7°C).

Average humidity in May - Porto Alegre, Brazil
  • Average humidity in May: 81%

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is December (69%).

Average rainfall in May - Porto Alegre, Brazil
  • Average rainfall in May: 90mm

The wettest month (with the highest rainfall) is September (142.2mm).
The driest month (with the lowest rainfall) is April (77.3mm).

Average rainfall days in May - Porto Alegre, Brazil
  • Average rainfall days in May: 8 days

The month with the highest number of rainy days is September (10 days).
Months with the lowest number of rainy days are April and December (7 days).

Average sea temperature in May - Porto Alegre, Brazil
  • Average sea temperature in May: 20.3°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).

Average daylight in May / Average sunshine in May - Porto Alegre, Brazil
  • Average daylight in May: 10.6h

The month with the longest days is December (Average daylight: 14.1h).
The month with shortest days is June (Average daylight: 10.2h).

  • Average sunshine in May: 5.4h

The month with most sunshine is December (Average sunshine: 7.9h).
The month with least sunshine is June (Average sunshine: 4.5h).

Average UV index in May - Porto Alegre, Brazil
  • Average UV index in May: 4

Months with the highest UV index are January, February, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 3).

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