Porto Alegre weather by month

Check out Porto Alegre weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & daylight
UV levels & humidity

Temperature in Porto Alegre (°F)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	84	84	82	77	70	66	66	68	70	75	79	82
Min temperature (night-time)	68	68	66	61	55	50	50	52	55	59	63	64
Heat & Humidity	M	M	L	0	0	0	0	0	0	L	M	L

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Porto Alegre

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	8	7	6	6	5	5	5	5	5	7	7	8
Daily hours of daylight	14	13	12	11	11	10	10	11	12	13	14	14
UV Index (Maximum)	11	11	10	7	4	3	3	5	7	10	11	11

Rainfall in Porto Alegre

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	19	17	18	12	14	17	16	16	18	16	15	16
Average monthly rainfall (inches)	4.1	4.3	4.1	3.6	3.7	5.3	4.9	5.4	5.6	4.6	4.0	4.0

More about Porto Alegre

Porto Alegre by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Brazil

Cosmos: Tour deal finder - low prices

Sale

Explore best prices on Cosmos tours worldwide
Find deals on tour holidays in 2025/2026
Filter by price, destination, duration & more

Go to Cosmos deal >>

View all Cosmos offers

The climate guide for Brazil (Porto Alegre) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Porto Alegre?

Porto Alegre has a temperate climate with hot summers and some rainfall in all months.

Porto Alegre weather in January

Expect daytime maximum temperatures of 84°F in Porto Alegre, Brazil in January based on long-term weather averages. There are 8 hours of sunshine per day on average with 19 days with some rainfall and typically 4.1 inches of rainfall in the month.

84
84°F max day temperature
8
8 hours of sunshine per day
19
19 days with some rainfall
68
68°F min night temperature
14
14 hours of daylight per day
M
Moderate heat & humidity
4.1
4.1 inches of monthly rainfall
11
11+ (Extreme) UV index

Back to months

Porto Alegre weather in February

Expect daytime maximum temperatures of 84°F in Porto Alegre, Brazil in February based on long-term weather averages. There are 7 hours of sunshine per day on average with 17 days with some rainfall and typically 4.3 inches of rainfall in the month.

84
84°F max day temperature
7
7 hours of sunshine per day
17
17 days with some rainfall
68
68°F min night temperature
13
13 hours of daylight per day
M
Moderate heat & humidity
4.3
4.3 inches of monthly rainfall
11
11+ (Extreme) UV index

Back to months

Porto Alegre weather in March

Expect daytime maximum temperatures of 82°F in Porto Alegre, Brazil in March based on long-term weather averages. There are 6 hours of sunshine per day on average with 18 days with some rainfall and typically 4.1 inches of rainfall in the month.

82
82°F max day temperature
6
6 hours of sunshine per day
18
18 days with some rainfall
66
66°F min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
4.1
4.1 inches of monthly rainfall
10
10 (Very High) UV index

Back to months

Porto Alegre weather in April

Expect daytime maximum temperatures of 77°F in Porto Alegre, Brazil in April based on long-term weather averages. There are 6 hours of sunshine per day on average with 12 days with some rainfall and typically 3.6 inches of rainfall in the month.

77
77°F max day temperature
6
6 hours of sunshine per day
12
12 days with some rainfall
61
61°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
3.6
3.6 inches of monthly rainfall
7
7 (High) UV index

Back to months

Porto Alegre weather in May

Expect daytime maximum temperatures of 70°F in Porto Alegre, Brazil in May based on long-term weather averages. There are 5 hours of sunshine per day on average with 14 days with some rainfall and typically 3.7 inches of rainfall in the month.

70
70°F max day temperature
5
5 hours of sunshine per day
14
14 days with some rainfall
55
55°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
3.7
3.7 inches of monthly rainfall
4
4 (Moderate) UV index

Back to months

Porto Alegre weather in June

Expect daytime maximum temperatures of 66°F in Porto Alegre, Brazil in June based on long-term weather averages. There are 5 hours of sunshine per day on average with 17 days with some rainfall and typically 5.3 inches of rainfall in the month.

66
66°F max day temperature
5
5 hours of sunshine per day
17
17 days with some rainfall
50
50°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
5.3
5.3 inches of monthly rainfall
3
3 (Moderate) UV index

Back to months

Porto Alegre weather in July

Expect daytime maximum temperatures of 66°F in Porto Alegre, Brazil in July based on long-term weather averages. There are 5 hours of sunshine per day on average with 16 days with some rainfall and typically 4.9 inches of rainfall in the month.

66
66°F max day temperature
5
5 hours of sunshine per day
16
16 days with some rainfall
50
50°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
4.9
4.9 inches of monthly rainfall
3
3 (Moderate) UV index

Back to months

Porto Alegre weather in August

Expect daytime maximum temperatures of 68°F in Porto Alegre, Brazil in August based on long-term weather averages. There are 5 hours of sunshine per day on average with 16 days with some rainfall and typically 5.4 inches of rainfall in the month.

68
68°F max day temperature
5
5 hours of sunshine per day
16
16 days with some rainfall
52
52°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
5.4
5.4 inches of monthly rainfall
5
5 (Moderate) UV index

Back to months

Porto Alegre weather in September

Expect daytime maximum temperatures of 70°F in Porto Alegre, Brazil in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 18 days with some rainfall and typically 5.6 inches of rainfall in the month.

70
70°F max day temperature
5
5 hours of sunshine per day
18
18 days with some rainfall
55
55°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
5.6
5.6 inches of monthly rainfall
7
7 (High) UV index

Back to months

Porto Alegre weather in October

Expect daytime maximum temperatures of 75°F in Porto Alegre, Brazil in October based on long-term weather averages. There are 7 hours of sunshine per day on average with 16 days with some rainfall and typically 4.6 inches of rainfall in the month.

75
75°F max day temperature
7
7 hours of sunshine per day
16
16 days with some rainfall
59
59°F min night temperature
13
13 hours of daylight per day
L
Low heat & humidity
4.6
4.6 inches of monthly rainfall
10
10 (Very High) UV index

Back to months

Porto Alegre weather in November

Expect daytime maximum temperatures of 79°F in Porto Alegre, Brazil in November based on long-term weather averages. There are 7 hours of sunshine per day on average with 15 days with some rainfall and typically 4.0 inches of rainfall in the month.

79
79°F max day temperature
7
7 hours of sunshine per day
15
15 days with some rainfall
63
63°F min night temperature
14
14 hours of daylight per day
M
Moderate heat & humidity
4.0
4.0 inches of monthly rainfall
11
11+ (Extreme) UV index

Back to months

Porto Alegre weather in December

Expect daytime maximum temperatures of 82°F in Porto Alegre, Brazil in December based on long-term weather averages. There are 8 hours of sunshine per day on average with 16 days with some rainfall and typically 4.0 inches of rainfall in the month.

82
82°F max day temperature
8
8 hours of sunshine per day
16
16 days with some rainfall
64
64°F min night temperature
14
14 hours of daylight per day
L
Low heat & humidity
4.0
4.0 inches of monthly rainfall
11
11+ (Extreme) UV index

Back to months