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Where it's hot in September in South America

South America coastal locations where the sea is genuinely warm in September. The regional average sits at 18.6°C in September. 411 of 947 tracked locations cross the comfortable swim threshold of 20°C this month — that's 43% of South America's coastline.

Above 20°C

411

43% of South America coastal locations, in September

Above 25°C

252

27% of South America coastal locations, in September

Warmest in September

Bahia el Tablazo

30.5°C in Venezuela

What the South America sea feels like in September

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

South America monthly average 18.1°C to 22.7°C
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  • Warmest month February 22.7°C
  • Coldest month August 18.1°C
  • Annual mean 20.4°C
  • Months above 20°C 7 of 12

How September compares

September is a transition month for South America. The warmer half of the region's coast is comfortable; the cooler half is borderline.

All twelve months for South America:

South America sea temperatures right now

Live pins for South America coloured by today's reading. The list below uses the typical September mean built from a decade of daily history.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 hottest South America locations in September

Sorted by typical September sea temperature. The first column is the rank; the value column is the long-term mean for September. Click any place for its full page.

# Location September mean
1 Bahia el Tablazo Zulia 30.5°C
2 El Toro Zulia 30.5°C
3 Punta de Palmas Zulia 30.5°C
4 Malecon Zulia 30.4°C
5 Covenas 30.3°C
6 Tolu 30.3°C
7 Cabimas 30.3°C
8 El Toro 30.3°C
9 Maracaibo 30.3°C
10 Tia Juana 30.3°C
11 Baru Island 30.1°C
12 Tintipan Island 30.1°C
13 Cartagena 29.9°C
14 La Boquilla 29.9°C
15 Rosario Islands 29.9°C
16 Ilha Do Brigue State of Amapá 29.9°C
17 Demarara Light Buoy Demerara-Mahaica 29.9°C
18 Punta Waini Barima-Waini 29.9°C
19 Charity Pomeroon-Supenaam 29.8°C
20 Puerto de Hierro Sucre 29.8°C
21 Belfield Demerara-Mahaica 29.8°C
22 Linden Upper Demerara-Berbice 29.8°C
23 Macapa Amapa 29.8°C
24 Santana Amapa 29.8°C
25 Georgetown 29.7°C
Show 25 more ▸
26 Arboletes 29.7°C
27 Puebloviejo 29.7°C
28 Mountain San Andres and Providencia 29.6°C
29 Necocli 29.6°C
30 Cocal State of Amapá 29.6°C
31 Providencia island 29.6°C
32 Barranquilla 29.6°C
33 Puerto Colombia 29.6°C
34 San Andres 29.6°C
35 Turbo 29.5°C
36 Acandi 29.5°C
37 Capurgana 29.5°C
38 Rosignol 29.5°C
39 New Amsterdam 29.4°C
40 Los Roques 29.4°C
41 Santa Marta 29.3°C
42 Guajira 29.3°C
43 Taganga 29.3°C
44 Tayrona 29.3°C
45 Playa Cepe 29.3°C
46 Skeldon 29.3°C
47 Gran Roque 29.3°C
48 Choroni 29.3°C
49 Costa de Oro 29.3°C
50 Catia La Mar Vargas 29.3°C

Above the comfortable-swim threshold (20°C)

Every South America location whose typical September mean sits above 20°C, the threshold most people find comfortable for unassisted swimming. 411 locations in total (43% of the region's coastline).

# Location September mean
1 Bahia el Tablazo Zulia 30.5°C
2 El Toro Zulia 30.5°C
3 Punta de Palmas Zulia 30.5°C
4 Malecon Zulia 30.4°C
5 Covenas 30.3°C
6 Tolu 30.3°C
7 Cabimas 30.3°C
8 El Toro 30.3°C
9 Maracaibo 30.3°C
10 Tia Juana 30.3°C
11 Baru Island 30.1°C
12 Tintipan Island 30.1°C
13 Cartagena 29.9°C
14 La Boquilla 29.9°C
15 Rosario Islands 29.9°C
16 Ilha Do Brigue State of Amapá 29.9°C
17 Demarara Light Buoy Demerara-Mahaica 29.9°C
18 Punta Waini Barima-Waini 29.9°C
19 Charity Pomeroon-Supenaam 29.8°C
20 Puerto de Hierro Sucre 29.8°C
Show 391 more ▸
21 Belfield Demerara-Mahaica 29.8°C
22 Linden Upper Demerara-Berbice 29.8°C
23 Macapa Amapa 29.8°C
24 Santana Amapa 29.8°C
25 Georgetown 29.7°C
26 Arboletes 29.7°C
27 Puebloviejo 29.7°C
28 Mountain San Andres and Providencia 29.6°C
29 Necocli 29.6°C
30 Cocal State of Amapá 29.6°C
31 Providencia island 29.6°C
32 Barranquilla 29.6°C
33 Puerto Colombia 29.6°C
34 San Andres 29.6°C
35 Turbo 29.5°C
36 Acandi 29.5°C
37 Capurgana 29.5°C
38 Rosignol 29.5°C
39 New Amsterdam 29.4°C
40 Los Roques 29.4°C
41 Santa Marta 29.3°C
42 Guajira 29.3°C
43 Taganga 29.3°C
44 Tayrona 29.3°C
45 Playa Cepe 29.3°C
46 Skeldon 29.3°C
47 Gran Roque 29.3°C
48 Choroni 29.3°C
49 Costa de Oro 29.3°C
50 Catia La Mar Vargas 29.3°C
51 Isla Larga 29.3°C
52 Ocumare de la Costa 29.3°C
53 Patanemo 29.3°C
54 Barcarena Para 29.2°C
55 Cameta Para 29.2°C
56 Limoeiro do Ajuru Para 29.2°C
57 Oeiras do Para Para 29.2°C
58 Puerto La Guaira Vargas 29.2°C
59 Puerto Cabello 29.2°C
60 Cayo Sombrero 29.2°C
61 Belem Para 29.2°C
62 Caraballeda Vargas 29.2°C
63 La Guaira 29.2°C
64 Maiquetia Vargas 29.2°C
65 Riohacha 29.1°C
66 Nieuw Nickerie 29.1°C
67 Chichiriviche 29.1°C
68 Morrocoy National Park 29.1°C
69 Tucacas 29.1°C
70 Caracas 29.1°C
71 Porto de Mosqueiro Pará 29.1°C
72 Ananindeua Para 29.0°C
73 Irapa 28.9°C
74 Adícora 28.9°C
75 Amuay Falcon 28.9°C
76 Domburg Wanica 28.9°C
77 Nieuw Amsterdam Commewijne 28.9°C
78 Suriname River Entrance Paramaribo 28.9°C
79 Rio Negro (near Barcelos) Amazonas 28.8°C
80 Paramaribo 28.8°C
81 Isla de Plata 28.7°C
82 La Vela de Coro 28.7°C
83 Pedernales 28.7°C
84 Punta Cardon 28.7°C
85 Punto Fijo 28.7°C
86 Soure Para 28.7°C
87 Totness 28.7°C
88 Puerto Carupano Sucre 28.6°C
89 Manaure 28.6°C
90 Barcelona 28.6°C
91 Lecherias 28.6°C
92 Puerto la Cruz 28.6°C
93 Ilha De Colares Pará 28.6°C
94 Santa Cruz de los Taques 28.6°C
95 Ilha dos Guaras State of Pará 28.6°C
96 Mochima 28.6°C
97 Playa Colorada 28.6°C
98 Vigia Para 28.6°C
99 Higuerote 28.6°C
100 Sao Caetano de Odivelas Para 28.6°C
101 Juan Griego 28.6°C
102 Playa El Agua 28.6°C
103 Playa Medina 28.6°C
104 Rio Caribe 28.6°C
105 Les Hattes Arrondissement of St.-Laurent-du-Maroni 28.6°C
106 Iles du Salut Arrondissement of Cayenne 28.5°C
107 Cabo de La Vela 28.5°C
108 Cumana 28.5°C
109 Amazon river (near Manaus) Amazonas 28.5°C
110 Marapanim Para 28.4°C
111 Boca del Rio 28.4°C
112 Punta de Piedras 28.4°C
113 Disney Espirito Santo 28.4°C
114 Kourou 28.4°C
115 Araya 28.4°C
116 Mana 28.4°C
117 Cayenne 28.4°C
118 Remire-Montjoly 28.4°C
119 Salinopolis Para 28.4°C
120 Coche Island 28.3°C
121 El Yaque 28.3°C
122 Margarita 28.3°C
123 Pampatar 28.3°C
124 Porlamar 28.3°C
125 Sao Joao de Pirabas Para 28.3°C
126 Carupano 28.3°C
127 Nuqui 28.2°C
128 Jurado 28.2°C
129 Augusto Correa Para 28.2°C
130 Itaqui Maranhão 28.2°C
131 Ponta da Madeira Maranhão 28.2°C
132 Pizarro Chocó 28.1°C
133 Bogota 28.1°C
134 Buenaventura 28.1°C
135 Mosquera 28.1°C
136 Sao Luis Maranhao 28.1°C
137 Alcantara Maranhao 28.0°C
138 Mariguitar 28.0°C
139 San Antonio del Golfo 28.0°C
140 Sao Jose de Ribamar Maranhao 28.0°C
141 Ilha de Santana State of Maranhão 27.8°C
142 El Charco 27.7°C
143 Mosquera Narino 27.7°C
144 Malpelo Island 27.5°C
145 Pizarro 27.5°C
146 Luis Correla Piauí 27.4°C
147 Puerto Tumaco Nariño 27.4°C
148 Tumaco 27.4°C
149 Tutoia Maranhao 27.4°C
150 San Lorenzo 27.4°C
151 Valdez 27.4°C
152 Lencois Maranhenses Maranhao 27.3°C
153 Luis Correia Piaui 27.2°C
154 Camocim Ceara 27.1°C
155 Saint Peter and Saint Paul Rocks Federal District 27.1°C
156 Acaraú Ceará 27.0°C
157 Esmeraldas 27.0°C
158 Jijoca de Jericoacoara Ceara 27.0°C
159 Pecem Ceara 26.9°C
160 Areia Branca (Salineiro Terminal) State of Sergipe 26.9°C
161 Barra Grande Ceara 26.9°C
162 Paracuru Ceara 26.9°C
163 Port of Pecem Ceara 26.9°C
164 Atacames 26.9°C
165 Tonsupa 26.9°C
166 Baia do Sancho Pernambuco 26.8°C
167 Caucaia Ceara 26.8°C
168 Cumbuco Ceara 26.8°C
169 Fernando de Noronha Pernambuco 26.8°C
170 Fortaleza Ceara 26.8°C
171 Canoa Quebrada Ceara 26.8°C
172 Areia Branca Rio Grande do Norte 26.7°C
173 Porto de Natal Rio Grande do Norte 26.7°C
174 Cabedelo (Rio Paraiba) Paraíba 26.7°C
175 Macau Rio Grande do Norte 26.7°C
176 La Mancha 26.7°C
177 Touros Rio Grande do Norte 26.7°C
178 Jaboatão Pernambuco 26.6°C
179 Maracajau Rio Grande do Norte 26.6°C
180 Natal Rio Grande do Norte 26.6°C
181 Ponta Negra Rio Grande do Norte 26.6°C
182 Cabedelo Paraiba 26.6°C
183 Joao Pessoa Paraiba 26.6°C
184 Pipa Rio Grande do Norte 26.6°C
185 Jacuma Paraiba 26.6°C
186 Pitimbu Paraiba 26.6°C
187 Porto de Suape Pernambuco 26.6°C
188 Tambaba Paraiba 26.6°C
189 Itamaraca Pernambuco 26.6°C
190 Mompiche 26.6°C
191 Muisne 26.6°C
192 Itapissuma Pernambuco 26.5°C
193 Muro Alto Beach Pernambuco 26.5°C
194 Olinda Pernambuco 26.5°C
195 Paulista Pernambuco 26.5°C
196 Porto de Galinhas Pernambuco 26.5°C
197 Cabo de Santo Agostinho Pernambuco 26.5°C
198 Ipojuca Pernambuco 26.5°C
199 Jaboatao dos Guararapes Pernambuco 26.5°C
200 Recife Pernambuco 26.5°C
201 Porto De Pedras Alagoas 26.5°C
202 Maracaipe Pernambuco 26.5°C
203 Maragogi Alagoas 26.5°C
204 Praia dos Carneiros Pernambuco 26.5°C
205 Serrambi Pernambuco 26.5°C
206 Maceio Alagoas 26.5°C
207 Antunes Alagoas 26.4°C
208 Sao Jose da Coroa Grande Pernambuco 26.4°C
209 Tamandare Pernambuco 26.4°C
210 Japaratinga Alagoas 26.4°C
211 Barra de Santo Antonio Alagoas 26.4°C
212 Sao Miguel dos Milagres Alagoas 26.4°C
213 Marechal Deodoro Alagoas 26.4°C
214 Ponta Verde Alagoas 26.3°C
215 Praia do Frances Alagoas 26.3°C
216 Rio Sao Francisco Bar Sergipe 26.3°C
217 Sergipe Terminal Sergipe 26.3°C
218 Aracaju Sergipe 26.1°C
219 Barra dos Coqueiros Sergipe 26.1°C
220 Ponta do Alambique Bahia 26.1°C
221 Porto de Madre De Deus Bahia 26.1°C
222 Porto de Aratu Bahia 26.0°C
223 Pedernales 26.0°C
224 Costa do Sauipe Bahia 26.0°C
225 Imbassai Bahia 26.0°C
226 Morro de Sao Paulo Bahia 25.9°C
227 Boipeba Bahia 25.9°C
228 Madre de Deus Bahia 25.9°C
229 Salvador Bahia 25.9°C
230 Sao Francisco do Conde Bahia 25.9°C
231 Guarajuba Bahia 25.9°C
232 Itaparica Island Bahia 25.9°C
233 Praia do Forte Bahia 25.9°C
234 Barra Grande Bahia 25.9°C
235 Itacare Bahia 25.9°C
236 Ilheus Bahia 25.8°C
237 Canavieiras Bahia 25.6°C
238 Belmonte Bahia 25.5°C
239 Darwin Island 25.4°C
240 Cumuruxatiba Bahia 25.4°C
241 Arraial d'Ajuda Bahia 25.2°C
242 Coroa Vermelha Bahia 25.2°C
243 Porto Seguro Bahia 25.2°C
244 Santa Cruz Cabralia Bahia 25.2°C
245 Trancoso Bahia 25.2°C
246 Caravelas Bahia 25.2°C
247 Unas dos Abrolhos Bahia 25.1°C
248 Nova Vicosa Bahia 25.1°C
249 Abrolhos Archipelago Bahia 25.1°C
250 Bahia de Caraquez 25.0°C
251 Manta 25.0°C
252 Itaunas Espirito Santo 25.0°C
253 Conceicao da Barra Espirito Santo 24.9°C
254 Mucuri Bahia 24.9°C
255 Wolf Island 24.9°C
256 Guriri Espirito Santo 24.8°C
257 Sao Mateus Espirito Santo 24.8°C
258 Bajo Alto 24.5°C
259 Jambeli 24.5°C
260 Los Frailes Beach 24.5°C
261 Machalilla 24.5°C
262 El Oro 24.5°C
263 Machala 24.5°C
264 Isla de la Plata 24.4°C
265 Huaquillas 24.3°C
266 Ayampe 24.2°C
267 Duran 24.2°C
268 Guayaquil 24.2°C
269 Puerto Lopez 24.2°C
270 Puerto Rico 24.2°C
271 Puna Island 24.2°C
272 Salango 24.2°C
273 Subida Alta 24.2°C
274 Montanita 24.0°C
275 Olon 24.0°C
276 Bajada 24.0°C
277 Puerto Pizarro 23.9°C
278 Tumbes 23.9°C
279 Data de Villamil 23.9°C
280 Engabao 23.9°C
281 Gral Villamil 23.9°C
282 Playas 23.9°C
283 Posorja 23.9°C
284 Regencia Espírito Santo 23.9°C
285 Ayangue 23.9°C
286 Ballenita 23.9°C
287 Chipipe 23.9°C
288 La Libertad 23.9°C
289 Punta Blanca 23.9°C
290 Punta Centinela 23.9°C
291 Salinas 23.9°C
292 San Pablo 23.9°C
293 Valdivia 23.9°C
294 Caleta Zorritos Zorritos 23.9°C
295 Bocapan 23.7°C
296 Zorritos 23.7°C
297 Anconcito 23.7°C
298 Una da Trinidade Espírito Santo 23.6°C
299 Ilha Da Trindade State of Espírito Santo 23.6°C
300 Monteverde 23.6°C
301 Chanduy 23.6°C
302 Trindade and Martim Vaz Espirito Santo 23.6°C
303 Cancas 23.5°C
304 Punta Sal 23.5°C
305 Porto do Tubarao Espírito Santo 23.3°C
306 Terminal de Barra do Riacho Espírito Santo 23.2°C
307 Guarapari Espirito Santo 22.9°C
308 Baltra Island 22.8°C
309 Los Organos 22.8°C
310 Mancora 22.8°C
311 Vichayito 22.8°C
312 Parati Rio de Janeiro 22.8°C
313 Disney State of Espírito Santo 22.8°C
314 Itapemirim Espírito Santo 22.8°C
315 Marataizes Espirito Santo 22.8°C
316 Vila Velha Espirito Santo 22.8°C
317 Vitoria Espirito Santo 22.8°C
318 Piuma Espirito Santo 22.7°C
319 Atafona Rio de Janeiro 22.7°C
320 Terminal da Ponta do Ubu Anchieta 22.6°C
321 Ilha Guaíba Rio de Janeiro 22.5°C
322 Itacurussá Rio de Janeiro 22.5°C
323 Itaguaí Rio de Janeiro 22.5°C
324 Cabo de Sao Tome Rio de Janeiro 22.4°C
325 Puerto Ayora 22.4°C
326 Santa Cruz 22.4°C
327 Caleta Aeolian Islas Galápagos 22.4°C
328 San Cristobal 22.3°C
329 Paraty State of Rio de Janeiro 22.2°C
330 Puerto Baquerizo Moreno 22.2°C
331 Angra dos Reis State of Rio de Janeiro 22.2°C
332 Ilha de Brocoio Rio de Janeiro 22.1°C
333 Ilha do Boqueirao Rio de Janeiro 22.1°C
334 Punta do Imbui Rio de Janeiro 22.1°C
335 Mangaratiba State of Rio de Janeiro 22.1°C
336 Porto do Açu Rio de Janeiro 22.1°C
337 Macae State of Rio de Janeiro 22.0°C
338 Sepetiba State of Rio de Janeiro 22.0°C
339 Ilha Grande State of Rio de Janeiro 22.0°C
340 Lopes Mendes State of Rio de Janeiro 22.0°C
341 Vila do Abraao State of Rio de Janeiro 22.0°C
342 Caraguatatuba Sao Paulo 21.9°C
343 Itamambuca Beach Sao Paulo 21.9°C
344 Ubatuba Sao Paulo 21.9°C
345 Santa Cruz Islas Galápagos 21.9°C
346 San Cristobal Islas Galápagos 21.9°C
347 Duque de Caxias State of Rio de Janeiro 21.9°C
348 Prainha Beach State of Rio de Janeiro 21.9°C
349 Praia do Farol State of Rio de Janeiro 21.9°C
350 Barra da Tijuca State of Rio de Janeiro 21.8°C
351 Recreio dos Bandeirantes State of Rio de Janeiro 21.8°C
352 Botafogo State of Rio de Janeiro 21.8°C
353 Copacabana State of Rio de Janeiro 21.8°C
354 Ipanema State of Rio de Janeiro 21.8°C
355 Laranjeiras State of Rio de Janeiro 21.8°C
356 Leblon State of Rio de Janeiro 21.8°C
357 Maceio State of Rio de Janeiro 21.8°C
358 Niteroi State of Rio de Janeiro 21.8°C
359 Pitangueiras State of Rio de Janeiro 21.8°C
360 Red Beach State of Rio de Janeiro 21.8°C
361 Rio de Janeiro State of Rio de Janeiro 21.8°C
362 Saquarema State of Rio de Janeiro 21.8°C
363 Arraial do Cabo State of Rio de Janeiro 21.8°C
364 Cabo Frio State of Rio de Janeiro 21.8°C
365 Pontal do Atalaia State of Rio de Janeiro 21.8°C
366 Praia do Forno State of Rio de Janeiro 21.8°C
367 Macae (Imbetiba) Rio de Janeiro 21.7°C
368 Juquei Sao Paulo 21.7°C
369 Maresias Sao Paulo 21.7°C
370 Armacao de Buzios State of Rio de Janeiro 21.6°C
371 Buzios State of Rio de Janeiro 21.6°C
372 Ferradura State of Rio de Janeiro 21.6°C
373 Ferradurinha Beach State of Rio de Janeiro 21.6°C
374 Geriba Beach State of Rio de Janeiro 21.6°C
375 Ilhabela Sao Paulo 21.6°C
376 Macae State of Rio de Janeiro 21.6°C
377 Porto Buzios Rio de Janeiro 21.6°C
378 Sao Sebastiao Sao Paulo 21.6°C
379 Tartaruga Beach State of Rio de Janeiro 21.6°C
380 Tucuns Beach State of Rio de Janeiro 21.6°C
381 Azeda Beach State of Rio de Janeiro 21.6°C
382 Joao Fernandes Beach State of Rio de Janeiro 21.6°C
383 Praia dos Ossos State of Rio de Janeiro 21.6°C
384 Rio das Ostras State of Rio de Janeiro 21.6°C
385 Bertioga Sao Paulo 21.6°C
386 Guaruja Sao Paulo 21.5°C
387 Santos Sao Paulo 21.5°C
388 Sao Vicente Sao Paulo 21.5°C
389 Puerto Villamil 21.4°C
390 Praia Grande Sao Paulo 21.4°C
391 Itanhaem Sao Paulo 21.3°C
392 Lobitos 21.2°C
393 Peruibe Sao Paulo 21.0°C
394 Ponta Paranapua State of São Paulo 20.9°C
395 Iguape Sao Paulo 20.8°C
396 Anakena 20.6°C
397 Easter Island 20.6°C
398 Hanga Roa 20.6°C
399 Cananeia Sao Paulo 20.5°C
400 Antonina Parana 20.5°C
401 Curitiba Parana 20.5°C
402 Paranagua Parana 20.5°C
403 Cananeia-B São Paulo 20.4°C
404 Caioba Parana 20.3°C
405 Guaratuba Parana 20.3°C
406 Ilha do Mel Parana 20.3°C
407 Matinhos Parana 20.3°C
408 Pontal do Parana Parana 20.3°C
409 Pontal do Sul Parana 20.3°C
410 Isla de Pascua (Hanga Piko) Valparaíso 20.3°C
411 Barra de Paranagua (Canal Sueste) Paraná 20.3°C

What this list does and doesn't tell you

Sea temperature is one input. Air temperature, wind, swell, and crowding all shape what a beach actually feels like. A 22°C sea on a cold cloudy day with strong onshore wind feels colder than the number suggests. A 17°C sea on a hot still day feels warmer.

The rankings here are typical means built from about ten years of daily readings, so they represent a normal September, not whatever's happening this week. For today's actual reading, click through to any location page. The 30-day chart will show you the current trend.

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