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Places with the best weather in South America in October: ranked by comfort score

Arequipa tops the list at 97 /100 in October. Ranked from 1991–2020 climate normals across 50 destinations in South America.

Top three in October: Arequipa (97 /100) , La Serena (96 /100) , Chincha Alta (95 /100) . Between first and 50th place the comfort differs by 16 /100.

# Destination Country Comfort Avg high Avg low Rainfall Wet days Sunshine Sea temp
1 Arequipa Peru 97 /100 23 °C 11 °C 5 mm 1 373 h –
2 La Serena Chile 96 /100 22 °C 13 °C 5 mm 1 364 h 14 °C
3 Chincha Alta Peru 95 /100 23 °C 16 °C 1 mm 0 364 h 17 °C
4 Abha Saudi Arabia 95 /100 23 °C 13 °C 31 mm 8 347 h –
5 Tacna Peru 94 /100 22 °C 13 °C 1 mm 0 360 h –
6 Lima Peru 94 /100 22 °C 16 °C 2 mm 0 361 h 17 °C
7 Coquimbo Chile 94 /100 20 °C 12 °C 5 mm 1 364 h 14 °C
8 Trujillo Peru 93 /100 23 °C 17 °C 4 mm 1 357 h 17 °C
9 La Rioja Argentina 93 /100 26 °C 15 °C 48 mm 5 341 h –
10 Iquique Chile 93 /100 23 °C 15 °C 3 mm 0 381 h 18 °C
11 Maipú Chile 93 /100 21 °C 9.0 °C 38 mm 6 359 h –
12 Quillacollo Bolivia 92 /100 24 °C 12 °C 39 mm 9 346 h –
13 Antofagasta Chile 92 /100 20 °C 14 °C 1 mm 0 379 h 16 °C
14 Callao Peru 92 /100 21 °C 16 °C 2 mm 0 361 h 17 °C
15 Cochabamba Bolivia 92 /100 23 °C 12 °C 39 mm 9 346 h –
16 Santa Anita - Los Ficus Peru 92 /100 20 °C 15 °C 2 mm 0 361 h 17 °C
17 Neuquén Argentina 92 /100 22 °C 9.9 °C 30 mm 4 351 h –
18 Khamis Mushait Saudi Arabia 92 /100 26 °C 15 °C 7 mm 1 347 h –
19 Chiclayo Peru 92 /100 23 °C 17 °C 3 mm 1 352 h 17 °C
20 Talca Chile 91 /100 21 °C 8.3 °C 40 mm 5 353 h –
21 Arica Chile 91 /100 20 °C 14 °C 8 mm 2 375 h 18 °C
22 Chimbote Peru 91 /100 21 °C 16 °C 2 mm 1 358 h 17 °C
23 San Luis Argentina 90 /100 24 °C 13 °C 66 mm 8 339 h –
24 Río Cuarto Argentina 90 /100 23 °C 12 °C 85 mm 9 307 h –
25 Santiago Chile 90 /100 20 °C 8.0 °C 38 mm 6 358 h –
26 Córdoba Argentina 90 /100 24 °C 13 °C 84 mm 10 314 h –
27 Quilicura Chile 90 /100 21 °C 9.2 °C 56 mm 8 362 h –
28 Ica Peru 89 /100 27 °C 16 °C 1 mm 0 367 h –
29 Paraná Argentina 89 /100 24 °C 14 °C 119 mm 9 304 h –
30 Rosario Argentina 88 /100 23 °C 13 °C 115 mm 10 306 h –
31 Bahía Blanca Argentina 88 /100 21 °C 11 °C 63 mm 8 322 h 15 °C
32 Santa Fe Argentina 88 /100 24 °C 15 °C 128 mm 10 303 h –
33 Viña del Mar Chile 88 /100 19 °C 11 °C 14 mm 2 372 h 13 °C
34 Merlo Argentina 87 /100 21 °C 12 °C 111 mm 9 301 h –
35 Rancagua Chile 85 /100 20 °C 7.0 °C 58 mm 8 349 h –
36 La Plata Argentina 85 /100 20 °C 13 °C 106 mm 9 310 h 18 °C
37 Garanhuns Brazil 85 /100 26 °C 17 °C 24 mm 7 345 h –
38 Catamarca Argentina 85 /100 27 °C 16 °C 68 mm 9 332 h –
39 Avellaneda Argentina 84 /100 20 °C 13 °C 111 mm 9 305 h 18 °C
40 Buenos Aires Argentina 84 /100 20 °C 13 °C 119 mm 9 307 h 18 °C
41 Ta’if Saudi Arabia 84 /100 29 °C 17 °C 8 mm 2 344 h –
42 Vitória da Conquista Brazil 84 /100 27 °C 17 °C 47 mm 7 323 h –
43 Santa Maria Brazil 83 /100 24 °C 14 °C 207 mm 12 262 h –
44 Puente Alto Chile 82 /100 20 °C 6.8 °C 60 mm 10 351 h –
45 Viamão Brazil 82 /100 23 °C 15 °C 173 mm 12 266 h –
46 Sucre Bolivia 82 /100 21 °C 9.6 °C 66 mm 13 327 h –
47 Chillán Chile 82 /100 19 °C 7.2 °C 63 mm 7 349 h –
48 Pelotas Brazil 81 /100 21 °C 15 °C 141 mm 11 276 h –
49 Porto Alegre Brazil 81 /100 24 °C 15 °C 173 mm 12 265 h –
50 Loja Ecuador 81 /100 22 °C 14 °C 90 mm 16 334 h –

Monthly values for the month named in the ranking; only destinations with a published climate page are ranked. Download this ranking as CSV.

The same ranking one month earlier and later

September: top 5

  1. La Rioja 98 /100
  2. Catamarca 97 /100
  3. Chincha Alta 97 /100
  4. Quillacollo 97 /100
  5. Cochabamba 96 /100

Full ranking for September

November: top 5

  1. Khamis Mushait 98 /100
  2. Arequipa 98 /100
  3. Ta’if 97 /100
  4. Quilicura 97 /100
  5. Santiago 96 /100

Full ranking for November

How this ranking is built

What is ranked
Our 0–100 comfort score for sightseeing weather (formula on the methodology page), in October, highest first.
Period
1991–2020 climate normals: the same 30 years for every destination, so the list compares like with like.
Who is included
50 destinations in South America with a published climate page. Neighbouring places that share a climate series are shown once.
Ties
Equal values are ordered by fewest wet days.
Sources
ERA5 / ERA5-Land reanalysis via Open-Meteo; sea temperature from NOAA OISST v2.1. Measured values are reproduced unchanged; only the ordering and the score is ours.

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.