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The warmest places in South America in October: ranked by average high temperature

Teresina tops the list at 37 °C in October. Ranked from 1991–2020 climate normals across 50 destinations in South America.

Top three in October: Teresina (37 °C) , Caxias (36 °C) , Makkah (36 °C) . Between first and 50th place the avg high differs by 5.7 °C.

# Destination Country Avg high Avg high Avg low Rainfall Wet days Sunshine Sea temp
1 Teresina Brazil 37 °C 37 °C 25 °C 16 mm 2 357 h –
2 Caxias Brazil 36 °C 36 °C 24 °C 16 mm 3 356 h –
3 Makkah Saudi Arabia 36 °C 36 °C 23 °C 7 mm 3 339 h –
4 Madinah Saudi Arabia 36 °C 36 °C 20 °C 2 mm 0 336 h –
5 Al Hufūf Saudi Arabia 36 °C 36 °C 20 °C 0 mm 0 338 h –
6 Sobral Brazil 36 °C 36 °C 24 °C 3 mm 1 355 h –
7 Mossoró Brazil 35 °C 35 °C 24 °C 2 mm 0 362 h –
8 Al Kharj Saudi Arabia 35 °C 35 °C 19 °C 1 mm 0 339 h –
9 Hafar Al-Batin Saudi Arabia 35 °C 35 °C 20 °C 1 mm 0 334 h –
10 Al Jubayl Saudi Arabia 35 °C 35 °C 23 °C 1 mm 0 337 h 30 °C
11 Buraydah Saudi Arabia 34 °C 34 °C 19 °C 3 mm 0 337 h –
12 Şabyā Saudi Arabia 34 °C 34 °C 27 °C 22 mm 4 339 h 32 °C
13 Juazeiro do Norte Brazil 34 °C 34 °C 23 °C 10 mm 2 352 h –
14 Barreiras Brazil 34 °C 34 °C 23 °C 49 mm 6 339 h –
15 Dammam Saudi Arabia 34 °C 34 °C 24 °C 1 mm 0 339 h 30 °C
16 Riyadh Saudi Arabia 34 °C 34 °C 20 °C 1 mm 0 339 h –
17 Petrolina Brazil 34 °C 34 °C 22 °C 13 mm 1 350 h –
18 Unaizah Saudi Arabia 34 °C 34 °C 19 °C 2 mm 0 337 h –
19 Yanbu Saudi Arabia 34 °C 34 °C 25 °C 2 mm 0 337 h 30 °C
20 Imperatriz Brazil 33 °C 33 °C 25 °C 43 mm 6 358 h –
21 Parnaíba Brazil 33 °C 33 °C 25 °C 6 mm 1 356 h 27 °C
22 Jeddah Saudi Arabia 33 °C 33 °C 26 °C 3 mm 1 340 h 31 °C
23 Palmas Brazil 33 °C 33 °C 24 °C 129 mm 15 337 h –
24 Rondonópolis Brazil 33 °C 33 °C 23 °C 110 mm 16 326 h –
25 Castanhal Brazil 33 °C 33 °C 24 °C 34 mm 8 366 h –
26 Cuiabá Brazil 33 °C 33 °C 24 °C 128 mm 16 329 h –
27 Várzea Grande Brazil 33 °C 33 °C 24 °C 117 mm 15 322 h –
28 Abaetetuba Brazil 33 °C 33 °C 25 °C 25 mm 7 367 h –
29 Marabá Brazil 33 °C 33 °C 24 °C 71 mm 11 350 h –
30 Coro Venezuela 33 °C 33 °C 25 °C 100 mm 16 318 h 28 °C
31 Ananindeua Brazil 33 °C 33 °C 24 °C 44 mm 10 367 h 29 °C
32 Araguaína Brazil 32 °C 32 °C 23 °C 103 mm 14 343 h –
33 Belém Brazil 32 °C 32 °C 25 °C 32 mm 7 367 h 29 °C
34 Ciudad Bolívar Venezuela 32 °C 32 °C 24 °C 108 mm 16 340 h –
35 Maracanaú Brazil 32 °C 32 °C 24 °C 7 mm 2 358 h 27 °C
36 Macapá Brazil 32 °C 32 °C 25 °C 18 mm 4 364 h 30 °C
37 Boa Vista Brazil 32 °C 32 °C 24 °C 81 mm 13 343 h –
38 Parauapebas Brazil 32 °C 32 °C 23 °C 73 mm 12 345 h –
39 Porto Velho Brazil 32 °C 32 °C 24 °C 176 mm 22 311 h –
40 Ciudad Guayana Venezuela 32 °C 32 °C 24 °C 88 mm 16 340 h –
41 Ha'il Saudi Arabia 32 °C 32 °C 18 °C 3 mm 1 332 h –
42 Rio Branco Brazil 32 °C 32 °C 23 °C 138 mm 19 302 h –
43 Sinop Brazil 31 °C 31 °C 22 °C 143 mm 20 314 h –
44 Santarém Brazil 31 °C 31 °C 26 °C 107 mm 11 335 h –
45 Cayenne French Guiana 31 °C 31 °C 24 °C 58 mm 11 351 h 28 °C
46 San Fernando de Apure Venezuela 31 °C 31 °C 24 °C 153 mm 22 318 h –
47 Santa Teresa del Tuy Venezuela 31 °C 31 °C 23 °C 83 mm 17 314 h –
48 São Luís Brazil 31 °C 31 °C 26 °C 14 mm 3 362 h 28 °C
49 El Tigre Venezuela 31 °C 31 °C 23 °C 87 mm 16 334 h –
50 Manaus Brazil 31 °C 31 °C 25 °C 148 mm 21 321 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. Stanley 6.6 °C
  2. Puerto Montt 12 °C
  3. La Paz 14 °C
  4. Temuco 14 °C
  5. Valparaíso 14 °C

Full ranking for September

November: top 5

  1. Stanley 11 °C
  2. La Paz 15 °C
  3. Puerto Montt 15 °C
  4. Quito 16 °C
  5. Juliaca 17 °C

Full ranking for November

How this ranking is built

What is ranked
The average daily high temperature, in °C, 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 population.
Sources
ERA5 / ERA5-Land reanalysis via Open-Meteo; sea temperature from NOAA OISST v2.1. Measured values are reproduced unchanged; only the ordering 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.