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The coolest places in South America in September

Stanley tops the list at 6.6 °C in September. Ranked from 1991–2020 climate normals across 50 destinations.

# Destination Country Avg high Avg high Rainfall
1 Stanley Falkland Islands 6.6 °C 6.6 °C 38 mm
2 Puerto Montt Chile 12 °C 12 °C 181 mm
3 La Paz Bolivia 14 °C 14 °C 39 mm
4 Temuco Chile 14 °C 14 °C 111 mm
5 Valparaíso Chile 14 °C 14 °C 25 mm
6 Talcahuano Chile 15 °C 15 °C 65 mm
7 Mar del Plata Argentina 15 °C 15 °C 57 mm
8 Concepción Chile 15 °C 15 °C 66 mm
9 Montevideo Uruguay 16 °C 16 °C 84 mm
10 Juliaca Peru 16 °C 16 °C 46 mm
11 Huancayo Peru 16 °C 16 °C 85 mm
12 Chillán Chile 16 °C 16 °C 96 mm
13 Cusco Peru 16 °C 16 °C 38 mm
14 Peñalolén Chile 17 °C 17 °C 71 mm
15 Oruro Bolivia 17 °C 17 °C 22 mm
16 Rio Grande Brazil 17 °C 17 °C 133 mm
17 La Plata Argentina 17 °C 17 °C 72 mm
18 Puente Alto Chile 17 °C 17 °C 73 mm
19 Tunja Colombia 17 °C 17 °C 103 mm
20 Viña del Mar Chile 17 °C 17 °C 25 mm
21 Quito Ecuador 17 °C 17 °C 189 mm
22 Buenos Aires Argentina 17 °C 17 °C 79 mm
23 Talca Chile 18 °C 18 °C 61 mm
24 Avellaneda Argentina 18 °C 18 °C 75 mm
25 Ambato Ecuador 18 °C 18 °C 109 mm
26 Bahía Blanca Argentina 18 °C 18 °C 45 mm
27 Rancagua Chile 18 °C 18 °C 80 mm
28 Santiago Chile 18 °C 18 °C 55 mm
29 Latacunga Ecuador 18 °C 18 °C 97 mm
30 Cuenca Ecuador 18 °C 18 °C 68 mm
31 Neuquén Argentina 18 °C 18 °C 19 mm
32 Arica Chile 18 °C 18 °C 13 mm
33 Merlo Argentina 19 °C 19 °C 71 mm
34 Maipú Chile 19 °C 19 °C 54 mm
35 Pelotas Brazil 19 °C 19 °C 140 mm
36 Coquimbo Chile 19 °C 19 °C 6 mm
37 Pasto Colombia 19 °C 19 °C 107 mm
38 Santa Anita - Los Ficus Peru 19 °C 19 °C 2 mm
39 Lages Brazil 19 °C 19 °C 165 mm
40 Caxias do Sul Brazil 19 °C 19 °C 171 mm
41 Riobamba Ecuador 19 °C 19 °C 48 mm
42 San Salvador de Jujuy Argentina 19 °C 19 °C 118 mm
43 Bogotá Colombia 20 °C 20 °C 30 mm
44 Antofagasta Chile 20 °C 20 °C 1 mm
45 Callao Peru 20 °C 20 °C 2 mm
46 Cajamarca Peru 20 °C 20 °C 151 mm
47 La Serena Chile 20 °C 20 °C 6 mm
48 Chimbote Peru 20 °C 20 °C 1 mm
49 Soacha Colombia 20 °C 20 °C 103 mm
50 Río Cuarto Argentina 20 °C 20 °C 39 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.