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

Sobral tops the list at 34 °C in December. Ranked from 1991–2020 climate normals across 50 destinations in South America.

Top three in December: Sobral (34 °C) , Mossoró (34 °C) , Teresina (34 °C) . Between first and 50th place the avg high differs by 4.3 °C.

# Destination Country Avg high Avg high Avg low Rainfall Wet days Sunshine Sea temp
1 Sobral Brazil 34 °C 34 °C 24 °C 28 mm 5 349 h –
2 Mossoró Brazil 34 °C 34 °C 24 °C 17 mm 4 361 h –
3 Teresina Brazil 34 °C 34 °C 24 °C 96 mm 12 338 h –
4 Petrolina Brazil 33 °C 33 °C 23 °C 54 mm 6 355 h –
5 Juazeiro do Norte Brazil 33 °C 33 °C 23 °C 39 mm 6 351 h –
6 Caxias Brazil 33 °C 33 °C 24 °C 108 mm 13 337 h –
7 Calabozo Venezuela 32 °C 32 °C 24 °C 21 mm 5 335 h –
8 Santiago del Estero Argentina 32 °C 32 °C 22 °C 132 mm 11 343 h –
9 San Fernando de Apure Venezuela 32 °C 32 °C 25 °C 24 mm 5 331 h –
10 Arapiraca Brazil 32 °C 32 °C 22 °C 18 mm 5 366 h –
11 Parnaíba Brazil 32 °C 32 °C 25 °C 34 mm 7 352 h 28 °C
12 Castanhal Brazil 32 °C 32 °C 24 °C 110 mm 17 336 h –
13 Alagoinhas Brazil 32 °C 32 °C 23 °C 45 mm 8 359 h –
14 Sullana Peru 32 °C 32 °C 20 °C 17 mm 4 348 h –
15 Feira de Santana Brazil 32 °C 32 °C 22 °C 47 mm 8 352 h –
16 Boa Vista Brazil 32 °C 32 °C 24 °C 63 mm 10 341 h –
17 Valle de La Pascua Venezuela 32 °C 32 °C 23 °C 21 mm 5 336 h –
18 Formosa Argentina 31 °C 31 °C 22 °C 164 mm 11 351 h –
19 Ciudad Bolívar Venezuela 31 °C 31 °C 24 °C 39 mm 9 331 h –
20 Maracanaú Brazil 31 °C 31 °C 25 °C 33 mm 9 354 h 28 °C
21 Piura Peru 31 °C 31 °C 20 °C 19 mm 4 348 h –
22 Ananindeua Brazil 31 °C 31 °C 24 °C 140 mm 19 338 h 29 °C
23 Asunción Paraguay 31 °C 31 °C 23 °C 165 mm 13 351 h –
24 Abaetetuba Brazil 31 °C 31 °C 25 °C 118 mm 16 334 h –
25 San Lorenzo Paraguay 31 °C 31 °C 23 °C 165 mm 13 351 h –
26 El Tigre Venezuela 31 °C 31 °C 22 °C 27 mm 8 328 h –
27 Cuiabá Brazil 31 °C 31 °C 24 °C 210 mm 24 315 h –
28 Várzea Grande Brazil 31 °C 31 °C 24 °C 214 mm 23 309 h –
29 Coro Venezuela 31 °C 31 °C 24 °C 30 mm 7 336 h 27 °C
30 Rondonópolis Brazil 31 °C 31 °C 23 °C 247 mm 24 307 h –
31 Belém Brazil 31 °C 31 °C 25 °C 113 mm 18 335 h 29 °C
32 Resistencia Argentina 31 °C 31 °C 22 °C 148 mm 10 359 h –
33 Maracaibo Venezuela 31 °C 31 °C 24 °C 32 mm 6 332 h 28 °C
34 Barreiras Brazil 31 °C 31 °C 22 °C 142 mm 15 310 h –
35 Ituzaingó Argentina 31 °C 31 °C 22 °C 166 mm 11 351 h –
36 Camaçari Brazil 31 °C 31 °C 24 °C 43 mm 10 372 h 27 °C
37 São Luís Brazil 31 °C 31 °C 26 °C 61 mm 12 346 h 28 °C
38 Corrientes Argentina 31 °C 31 °C 22 °C 151 mm 10 359 h –
39 Acarigua Venezuela 31 °C 31 °C 22 °C 34 mm 8 330 h –
40 Ciudad del Este Paraguay 30 °C 30 °C 22 °C 195 mm 15 338 h –
41 Governador Valadares Brazil 30 °C 30 °C 22 °C 215 mm 17 297 h –
42 Ciudad Ojeda Venezuela 30 °C 30 °C 24 °C 66 mm 14 329 h –
43 Caucaia Brazil 30 °C 30 °C 25 °C 24 mm 6 355 h 28 °C
44 Cabimas Venezuela 30 °C 30 °C 24 °C 64 mm 13 332 h –
45 Palmas Brazil 30 °C 30 °C 23 °C 292 mm 25 299 h –
46 Imperatriz Brazil 30 °C 30 °C 24 °C 151 mm 20 313 h –
47 Campina Grande Brazil 30 °C 30 °C 21 °C 20 mm 6 350 h –
48 Posadas Argentina 30 °C 30 °C 22 °C 164 mm 11 348 h –
49 São João de Meriti Brazil 30 °C 30 °C 23 °C 232 mm 21 305 h –
50 Araure Venezuela 30 °C 30 °C 22 °C 35 mm 8 330 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

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

January: top 5

  1. Calabozo 34 °C
  2. San Fernando de Apure 33 °C
  3. Mossoró 33 °C
  4. Sullana 33 °C
  5. Piura 33 °C

Full ranking for January

How this ranking is built

What is ranked
The average daily high temperature, in °C, in December, 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.