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Coldest sea in Mexico

192 coastal locations in Mexico ranked by year-round average sea temperature, coldest first. The regional average is 26.1°C. The top of the list is where the water stays cold all year. The contrast list at the bottom shows the warmest coasts for context.

Coldest location

San Quintin

Year-round average 17.3°C in Mexico

Regional average

26.1°C

across all 192 Mexico coastal locations

Coldest month

February

23.4°C region-wide average

Mexico monthly average 23.4°C to 28.9°C
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  • Warmest month August 28.9°C
  • Coldest month February 23.4°C
  • Annual mean 26.1°C
  • Months above 20°C 12 of 12

Month by month across Mexico

Sea temperatures in Mexico swing from 23.4°C in February to 28.9°C in August on average across every coast we track. That spread of 6°C hides much bigger swings at individual locations.

Want a specific month? Pick one for a dedicated ranking:

Mexico sea temperature map

Today's pin colours show the latest daily reading at every Mexico location we track. Cool blues cluster around the high-latitude coasts.

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 coldest locations in Mexico

Coastal locations across Mexico sorted by year-round average, coldest first. Honest cold-water swimming country. Click any place for its 30-day chart, monthly profile, and 10-year history.

# Location Annual mean
1 San Quintin Baja California 17.3°C
2 Ensenada Baja California 17.5°C
3 Gonzaga Bay Baja California 17.5°C
4 Playa Hermosa 17.5°C
5 Primo Tapia Baja California 17.8°C
6 Puerto Nuevo Baja California 17.8°C
7 Rosarito Baja California 17.9°C
8 Tijuana Baja California 17.9°C
9 Coronado Islands Baja California 18.1°C
10 Guadalupe Island Baja California 18.6°C
11 Guadalupe Island Baja California 18.7°C
12 Cedros Island Baja California 18.7°C
13 Guadalupe Baja California 18.8°C
14 Bahia Tortugas Baja California Sur 19.0°C
15 Guerrero Negro Baja California Sur 19.3°C
16 Bahia Asuncion Baja California Sur 19.6°C
17 Estero de La Bocana Baja California Sur 19.8°C
18 Punta Abreojos Baja California Sur 20.1°C
19 Bahia San Juanico Baja California Sur 21.1°C
20 San Juanico Baja California Sur 21.1°C
21 Scorpion Bay Baja California Sur 21.2°C
22 Puerto San Carlos Baja California Sur 21.5°C
23 San Carlos Baja California Sur 21.6°C
24 Bahia Magdalena Baja California Sur 21.8°C
25 Magdalena Bay Baja California Sur 21.9°C
Show 25 more ▸
26 Bahia de los Angeles Baja California 22.4°C
27 Bahia Los Angeles Baja California 22.5°C
28 Puerto Libertad Sonora 23.3°C
29 Puerto Lobos Sonora 23.4°C
30 Tiburon Island Sonora 23.4°C
31 Caborca Sonora 23.5°C
32 Santa Rosalia Baja California Sur 23.6°C
33 Puerto Penasco Sonora 23.7°C
34 Bahia Kino Sonora 23.7°C
35 Puertecitos Baja California 23.8°C
36 San Felipe Baja California 23.8°C
37 Hermosillo Sonora 23.9°C
38 Cerritos Beach Baja California Sur 24.2°C
39 El Pescadero Baja California Sur 24.2°C
40 Punta Lobos Baja California Sur 24.2°C
41 Todos Santos Baja California Sur 24.2°C
42 Punta Chivato Baja California Sur 24.3°C
43 San Carlos Sonora 24.4°C
44 Mulege Baja California Sur 24.4°C
45 Playa Bagdad Tamaulipas 24.4°C
46 Guaymas Sonora 24.4°C
47 Bahia de Concepcion Baja California Sur 24.5°C
48 Matamoros Tamaulipas 24.6°C
49 Loreto Baja California Sur 24.7°C
50 Yavaros Sonora 25.0°C

Warmest 10 in Mexico for contrast

Same data flipped. Useful if you want to know which Mexico coasts stay warmest year-round before you commit to a cold-water swim trip.

# Location Annual mean
1 Puerto Chiapas Chiapas 29.8°C
2 Puerto Arista Chiapas 29.7°C
3 Maldonado Guerrero 29.5°C
4 Brisas de Zicatela Oaxaca 29.5°C
5 Puerto Escondido Oaxaca 29.5°C
6 Mazunte Oaxaca 29.4°C
7 San Agustinillo Oaxaca 29.4°C
8 Zipolite beach Oaxaca 29.4°C
9 Acapulco Guerrero 29.4°C
10 Tecoanapa Guerrero 29.4°C

More on this region