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Places with the best weather in South America in September

La Rioja tops the list at 98 /100 in September. Ranked from 1991–2020 climate normals across 50 destinations.

# Destination Country Comfort Avg high Rainfall
1 La Rioja Argentina 98 /100 23 °C 23 mm
2 Catamarca Argentina 97 /100 24 °C 32 mm
3 Chincha Alta Peru 97 /100 22 °C 0 mm
4 Quillacollo Bolivia 97 /100 23 °C 22 mm
5 Cochabamba Bolivia 96 /100 22 °C 22 mm
6 Arequipa Peru 94 /100 23 °C 3 mm
7 Córdoba Argentina 94 /100 21 °C 36 mm
8 Lima Peru 94 /100 21 °C 2 mm
9 San Luis Argentina 94 /100 22 °C 30 mm
10 Santa Fe Argentina 94 /100 21 °C 66 mm
11 Trujillo Peru 93 /100 22 °C 2 mm
12 La Serena Chile 93 /100 20 °C 6 mm
13 Iquique Chile 93 /100 22 °C 5 mm
14 Río Cuarto Argentina 93 /100 20 °C 39 mm
15 Paraná Argentina 93 /100 21 °C 64 mm
16 San Miguel de Tucumán Argentina 93 /100 24 °C 77 mm
17 Tacna Peru 92 /100 20 °C 2 mm
18 Loja Ecuador 92 /100 22 °C 38 mm
19 Chiclayo Peru 92 /100 23 °C 1 mm
20 Antofagasta Chile 92 /100 20 °C 1 mm
21 Rosario Argentina 92 /100 21 °C 63 mm
22 Ica Peru 92 /100 27 °C 0 mm
23 Callao Peru 91 /100 20 °C 2 mm
24 Santa Anita - Los Ficus Peru 91 /100 19 °C 2 mm
25 Vitória da Conquista Brazil 91 /100 26 °C 14 mm
26 Huánuco Peru 90 /100 23 °C 34 mm
27 Contagem Brazil 90 /100 26 °C 47 mm
28 Chimbote Peru 90 /100 20 °C 1 mm
29 Tarija Bolivia 90 /100 22 °C 31 mm
30 Poços de Caldas Brazil 90 /100 25 °C 91 mm
31 Coquimbo Chile 89 /100 19 °C 6 mm
32 Belo Horizonte Brazil 89 /100 27 °C 48 mm
33 Ribeirão das Neves Brazil 89 /100 27 °C 41 mm
34 Santiago del Estero Argentina 89 /100 27 °C 27 mm
35 Resistencia Argentina 88 /100 25 °C 103 mm
36 Santa Luzia Brazil 88 /100 28 °C 39 mm
37 Corrientes Argentina 88 /100 24 °C 113 mm
38 Salta Argentina 88 /100 21 °C 76 mm
39 Pouso Alegre Brazil 88 /100 26 °C 87 mm
40 Juiz de Fora Brazil 88 /100 25 °C 75 mm
41 Bragança Paulista Brazil 87 /100 25 °C 81 mm
42 Bogotá Colombia 87 /100 20 °C 30 mm
43 Ituzaingó Argentina 87 /100 24 °C 140 mm
44 Sete Lagoas Brazil 86 /100 28 °C 45 mm
45 Sucre Bolivia 86 /100 20 °C 40 mm
46 Francisco Morato Brazil 86 /100 25 °C 90 mm
47 Cotia Brazil 86 /100 24 °C 85 mm
48 Ponta Grossa Brazil 86 /100 22 °C 131 mm
49 Arica Chile 86 /100 18 °C 13 mm
50 Itapetininga Brazil 86 /100 25 °C 90 mm

Only destinations with a published page for that month are ranked. The ranking is ours; the underlying values are reproduced from the source.

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: ranking order, beach and comfort scores. 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.