, with very mild winters (from May to August) and hot summers (from December to March). The weather is very variable, and the rains are abundant and quite frequent all year round, with a maximum in winter (unlike what happens in north-central Brazil).
The city is located in southern Brazil, in the state of Rio Grande do Sul (of which it is the capital), at 30 degrees south latitude. The coast of the Atlantic Ocean is 95 km (60 mi) to the east, but the city overlooks Lake Guaíba, also known as River Guaíba, where five different rivers converge. To the south, the lake widens into the Lagoa dos Patos, a large lagoon parallel to the coast that reaches the cities of Pelotas and Rio Grande.
from the south, during which the temperature can drop to the freezing point at night, and can remain around 10/12 °C (50/54 °F) during the day.
Sometimes it can even snow. In August 1984, there was a light snowfall with accumulation.
There is no perfect time to visit Porto Alegre. From May to August, temperatures are normally mild, however, it can get cold at times. You can then choose the period from mid-April to mid-May, in which temperatures are intermediate between winter and summer.
For a beach holiday it will be necessary to choose the summer, from January to March, even though the air is often hot and humid, there can be severe thunderstorms and sometimes even heat waves.
. Here are the average temperatures.
January, the hottest month of the year, is generally a warm to hot, muggy month. The average temperature is of
25.9 °C, with a minimum of
20.6 °C and a maximum of
31.1 °C.
On the coldest nights of the month, the temperature usually drops to around
15.5 °C. However, it dropped to
10.6 °C in January 1998.
On the warmest days of the month, the temperature usually reaches around
36 °C. However, it reached
39 °C in January 2006.
Precipitation amounts to
110 mm, distributed over 9 days.
The day lasts on average 13 hours and 50 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
12.5 kph.
The average sea temperature is of
24.4 °C. Therefore, the sea is warm enough for swimming.
February is generally a warm to hot, muggy month. The average temperature is of
25.9 °C, with a minimum of
20.9 °C and a maximum of
30.9 °C.
On the coldest nights of the month, the temperature usually drops to around
15.5 °C. However, it dropped to
9 °C in February 1991.
On the warmest days of the month, the temperature usually reaches around
36 °C. However, it reached
40 °C in February 2014.
Precipitation amounts to
105 mm, distributed over 8 days.
The day lasts on average 13 hours and 5 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
11.5 kph.
The average sea temperature is of
25 °C. Therefore, the sea is warm enough for swimming.
March is generally a warm to hot, muggy month. The average temperature is of
24.6 °C, with a minimum of
19.5 °C and a maximum of
29.7 °C.
On the coldest nights of the month, the temperature usually drops to around
13.5 °C. However, it dropped to
9.4 °C in March 2000.
On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
38 °C in March 2020.
Precipitation amounts to
90 mm, distributed over 8 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
11.2 kph.
The average sea temperature is of
24.6 °C. Therefore, the sea is warm enough for swimming.
April is generally a warm month. The average temperature is of
21.6 °C, with a minimum of
16.4 °C and a maximum of
26.8 °C.
On the coldest nights of the month, the temperature usually drops to around
9.5 °C. However, it dropped to
3.8 °C in April 1991.
On the warmest days of the month, the temperature usually reaches around
33 °C. However, it reached
37 °C in April 1996.
Precipitation amounts to
105 mm, distributed over 9 days.
The day lasts on average 11 hours and 20 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
10 kph.
The average sea temperature is of
22.9 °C. Therefore, the sea can be considered barely acceptable for swimming.
May is generally a very mild month. The average temperature is of
18 °C, with a minimum of
13 °C and a maximum of
23 °C.
On the coldest nights of the month, the temperature usually drops to around
5.5 °C. However, it dropped to
0.4 °C in May 1992.
On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
33 °C in May 2002.
Precipitation amounts to
120 mm, distributed over 9 days.
The day lasts on average 10 hours and 35 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is of
8.8 kph.
The average sea temperature is of
20.3 °C. Therefore, the sea is cool for swimming.
June is generally a very mild month. The average temperature is of
16 °C, with a minimum of
10.8 °C and a maximum of
21.1 °C.
On the coldest nights of the month, the temperature usually drops to around
3.5 °C. However, it dropped to
-1 °C in June 1996.
On the warmest days of the month, the temperature usually reaches around
29 °C. However, it reached
32 °C in June 2006.
Precipitation amounts to
140 mm, distributed over 9 days.
The day lasts on average 10 hours and 10 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
There are on average 4 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is of
8.2 kph.
The average sea temperature is of
18 °C. Therefore, the sea is cold for swimming.
July, the coldest month of the year, is generally a very mild month. The average temperature is of
15.1 °C, with a minimum of
9.8 °C and a maximum of
20.4 °C.
On the coldest nights of the month, the temperature usually drops to around
2 °C. However, it dropped to
-3.2 °C in July 1991.
On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
32.3 °C in July 2005.
Precipitation amounts to
140 mm, distributed over 9 days.
The day lasts on average 10 hours and 25 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 41% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of
9.3 kph.
The average sea temperature is of
16.4 °C. Therefore, the sea is cold for swimming.
August is generally a very mild month. The average temperature is of
16.8 °C, with a minimum of
11.1 °C and a maximum of
22.4 °C.
On the coldest nights of the month, the temperature usually drops to around
4 °C. However, it dropped to
-1 °C in August 1991.
On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
36 °C in August 1995.
Precipitation amounts to
115 mm, distributed over 9 days.
The day lasts on average 11 hours and 5 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
9.9 kph.
The average sea temperature is of
16 °C. Therefore, the sea is cold for swimming.
September is generally a warm month. The average temperature is of
18.2 °C, with a minimum of
13 °C and a maximum of
23.3 °C.
On the coldest nights of the month, the temperature usually drops to around
6.5 °C. However, it dropped to
0 °C in September 2001.
On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
38 °C in September 1994.
Precipitation amounts to
140 mm, distributed over 10 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
11.8 kph.
The average sea temperature is of
16.7 °C. Therefore, the sea is cold for swimming.
October is generally a warm month. The average temperature is of
20.8 °C, with a minimum of
15.8 °C and a maximum of
25.8 °C.
On the coldest nights of the month, the temperature usually drops to around
9 °C. However, it dropped to
3 °C in October 1991.
On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
39 °C in October 1991.
Precipitation amounts to
140 mm, distributed over 10 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
12.8 kph.
The average sea temperature is of
18.5 °C. Therefore, the sea is very cool for swimming.
November is generally a warm to hot, muggy month. The average temperature is of
22.6 °C, with a minimum of
17.2 °C and a maximum of
28.1 °C.
On the coldest nights of the month, the temperature usually drops to around
11.5 °C. However, it dropped to
7 °C in November 1992.
On the warmest days of the month, the temperature usually reaches around
34.5 °C. However, it reached
38 °C in November 1991.
Precipitation amounts to
110 mm, distributed over 8 days.
The day lasts on average 13 hours and 40 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
13.1 kph.
The average sea temperature is of
20.6 °C. Therefore, the sea is cool for swimming.
December is generally a warm to hot, muggy month. The average temperature is of
24.9 °C, with a minimum of
19.4 °C and a maximum of
30.5 °C.
On the coldest nights of the month, the temperature usually drops to around
13.5 °C. However, it dropped to
10 °C in December 1995.
On the warmest days of the month, the temperature usually reaches around
36 °C. However, it reached
39 °C in December 1994.
Precipitation amounts to
100 mm, distributed over 8 days.
The day lasts on average 14 hours and 0 minutes. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.
There are on average 7.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
13.1 kph.
The average sea temperature is of
22.6 °C. Therefore, the sea can be considered barely acceptable for swimming.