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Monthly climate in Porto Alegre, Brazil

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Porto Alegre features a humid subtropical climate (Cfa).Temperatures typically range between 14 °C (58 °F) and 26 °C (79 °F) through the year, but rarely can drop to 2 °C (35 °F) or can rise to as high as 39 °C (103 °F).The average annual precipitation amounts to about 1330 mm (52.4 inches) and receives 121 rainy days on the 1 mm (0.04 inches) threshold annually.Porto Alegre enjoys an average of 3288 hours of sunshine throughout the year, and daylight varies from 10 hours 14 minutes to 14 hours 1 minutes per day.

Monthly average temperatures in Porto Alegre, Brazil §

The warmest months in Porto Alegre are January, February and December, with daily mean temperatures ranging from 24 to 26 °C (76 - 79 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 14 to 16 °C (58 - 61 °F) throughout the day. On average each year, Porto Alegre experiences 181 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Porto Alegre, Brazil.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 39°C
(103°F)		 38°C
(100°F)		 38°C
(100°F)		 34°C
(93°F)		 32°C
(90°F)		 31°C
(88°F)		 30°C
(87°F)		 34°C
(94°F)		 36°C
(96°F)		 37°C
(100°F)		 37°C
(99°F)		 38°C
(101°F)
Mean maximum 37°C
(99°F)		 36°C
(96°F)		 35°C
(96°F)		 33°C
(91°F)		 29°C
(85°F)		 26°C
(80°F)		 29°C
(85°F)		 31°C
(89°F)		 32°C
(90°F)		 33°C
(92°F)		 35°C
(95°F)		 36°C
(98°F)
Average high 31°C
(88°F)		 30°C
(87°F)		 28°C
(83°F)		 26°C
(79°F)		 22°C
(71°F)		 20°C
(68°F)		 19°C
(67°F)		 21°C
(70°F)		 23°C
(73°F)		 25°C
(77°F)		 27°C
(81°F)		 29°C
(85°F)
Daily mean 26°C
(79°F)		 25°C
(77°F)		 23°C
(75°F)		 21°C
(71°F)		 17°C
(63°F)		 16°C
(60°F)		 14°C
(58°F)		 16°C
(61°F)		 18°C
(65°F)		 20°C
(68°F)		 22°C
(72°F)		 24°C
(76°F)
Average low 22°C
(71°F)		 21°C
(69°F)		 20°C
(67°F)		 17°C
(64°F)		 14°C
(57°F)		 12°C
(54°F)		 10°C
(51°F)		 11°C
(53°F)		 15°C
(59°F)		 16°C
(61°F)		 17°C
(63°F)		 19°C
(67°F)
Mean minimum 17°C
(63°F)		 16°C
(61°F)		 15°C
(59°F)		 12°C
(54°F)		 8°C
(47°F)		 4°C
(40°F)		 3°C
(37°F)		 5°C
(41°F)		 9°C
(49°F)		 10°C
(51°F)		 13°C
(55°F)		 15°C
(59°F)
Minimum 15°C
(58°F)		 14°C
(58°F)		 13°C
(56°F)		 8°C
(47°F)		 5°C
(41°F)		 3°C
(38°F)		 2°C
(35°F)		 3°C
(38°F)		 7°C
(45°F)		 9°C
(49°F)		 12°C
(53°F)		 13°C
(55°F)

Compare climate in Porto Alegre with other places

Compare temperature, precipitation, sunshine, UV index in Porto Alegre, Brazil with other places around the world.

Monthly average precipitation in Porto Alegre, Brazil §

Porto Alegre usually has the most precipitation in May, September and October, with an average of 11 rainy days and 149 mm (5.9 inches) of precipitation per month.The driest months in Porto Alegre are April, August and December. On average, 74 mm (2.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Porto Alegre, Brazil.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 93 (3.7) 112 (4.4) 109 (4.3) 73 (2.9) 153 (6.0) 113 (4.4) 122 (4.8) 70 (2.8) 155 (6.1) 139 (5.5) 112 (4.4) 80 (3.2)
Average precipitation days (≥ 1 mm) 12 11 12 8 10 9 8 8 12 13 10 8

Monthly sunshine hours in Porto Alegre, Brazil §

The sunniest months in Porto Alegre are March, November and December, when the sun shines an average of 10 hours 44 minutes a day.Least sunny months in Porto Alegre: May, June and September receive an average of 7 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Porto Alegre, Brazil.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 271 310 312 270 229 219 239 257 227 273 315 360
Mean daily daylight hours 13h 48m 13h 6m 12h 13m 11h 19m 10h 35m 10h 14m 10h 25m 11h 4m 11h 55m 12h 49m 13h 36m 14h 1m

Solar UV radiation in Porto Alegre, Brazil §

Porto Alegre experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure.May, June and July are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Porto Alegre UV Index data.

Average daily maximum UV levels by month for Porto Alegre, Brazil.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 14 13 12 9 6 4 5 7 9 12 13 14