Monthly Climate
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Best time to visit Porto Alegre

May is the best time to visit Porto Alegre for general sightseeing, with average highs of 21 °C and about 9 wet days. The comfortable season runs roughly April to November.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking May comfort 87/100
The least cloud March 52 % average cloud cover
The least rain April 107 mm
Warmth January 29 °C
Cooler weather July 19 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 May 87 21 °C 9
2 April 84 25 °C 9
3 August 84 21 °C 10
4 September 84 22 °C 11
5 June 83 19 °C 9
6 October 81 24 °C 12
7 July 79 19 °C 10
8 November 79 26 °C 11
9 March 72 28 °C 12
10 December 69 28 °C 12
11 February 64 29 °C 13
12 January 62 29 °C 14

When to think twice

January scores lowest with about 14 wet days and highs near 29 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

Month Avg high Rainfall Cloud
January 29.3 °C 138 mm 55 %
February 28.8 °C 127 mm 56 %
March 27.6 °C 111 mm 52 %
April 25.0 °C 107 mm 55 %
May 21.2 °C 108 mm 60 %
June 19.2 °C 118 mm 63 %
July 18.6 °C 140 mm 59 %
August 20.7 °C 122 mm 56 %
September 21.7 °C 149 mm 61 %
October 23.9 °C 173 mm 64 %
November 26.1 °C 125 mm 54 %
December 28.5 °C 123 mm 54 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.