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Warmest sea in Puerto Rico in October

73 coastal locations in Puerto Rico ranked by their typical October sea temperature. Region-wide average in October: 29.6°C. The top of the list is where to find the warmest swimming this month.

Warmest in October

Mayagüez, Puerto Rico

29.8°C October mean in Puerto Rico

Regional October average

29.6°C

across all 73 coastal locations in Puerto Rico

Vs annual mean

+1.3°C

above the year-round regional average

What the Puerto Rico sea feels like in October

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

Puerto Rico monthly average 26.9°C to 29.7°C
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  • Warmest month September 29.7°C
  • Coldest month February 26.9°C
  • Annual mean 28.3°C
  • Months above 20°C 12 of 12

Where October fits in the year

October sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Puerto Rico month rankings:

Puerto Rico sea temperature map (live)

The map shows today's latest reading at every Puerto Rico location. The list below is based on the typical October mean, useful for trip planning weeks or months ahead.

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 warmest Puerto Rico locations in October

Sorted by the typical October mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location October mean
1 Mayagüez, Puerto Rico Mayagüez 29.8°C
2 Puerto Real, Puerto Rico (sub) Cabo Rojo 29.8°C
3 Punta Guanajibo, Mayagüez, Puerto Rico Cabo Rojo 29.8°C
4 Bahía Salinas, Puerto Rico Cabo Rojo 29.8°C
5 Magueyes Island, Caribbean Sea, Puerto Rico Lajas 29.8°C
6 Guanica, Puerto Rico Guánica 29.8°C
7 Peñuelas (Punta Guayanilla), Puerto Rico Peñuelas 29.8°C
8 Playa de Ponce, Puerto Rico Ponce 29.8°C
9 Puerto Ponce Ponce 29.8°C
10 Capitanejo Juana Díaz 29.8°C
11 Playa Cortada, Puerto Rico Juana Díaz 29.8°C
12 Santa Isabel, Puerto Rico Santa Isabel 29.8°C
13 Arroyo, Puerto Rico Arroyo 29.7°C
14 Jobos Guayama 29.7°C
15 Las Mareas, Puerto Rico Guayama 29.7°C
16 Palmas Arroyo 29.7°C
17 Puerto Maunabo, Puerto Rico Maunabo 29.7°C
18 Punta Tuna Maunabo 29.7°C
19 Yabucoa Harbor, Puerto Rico Yabucoa 29.7°C
20 Aguadilla, Crashboat Beach, Puerto Rico Aguadilla 29.7°C
21 La Parguera 29.6°C
22 Mona Island, Puerto Rico Mayagüez 29.6°C
23 Naguabo, Puerto Rico Naguabo 29.6°C
24 Roosevelt Roads, Puerto Rico Ceiba 29.6°C
25 Esperanza, Vieques Island, Puerto Rico Vieques 29.6°C
Show 25 more ▸
26 Fajardo, Puerto Rico Fajardo 29.6°C
27 Isla Palominos, Puerto Rico Fajardo 29.6°C
28 Playa de Fajardo, Puerto Rico Fajardo 29.6°C
29 Puerto Ferro, Isla de Vieques, Puerto Rico Vieques 29.6°C
30 Punta Mulas, Isla de Vieques, Puerto Rico Vieques 29.6°C
31 Boqueron 29.6°C
32 Cabo Rojo 29.6°C
33 Culebra, Puerto Rico Culebra 29.6°C
34 Ensenada Honda, Culebra Island, Puerto Rico Culebra 29.6°C
35 Mayaguez 29.6°C
36 Puerto Real 29.6°C
37 Bayamón Bayamón 29.6°C
38 Culebrita, Isla, Puerto Rico Culebra 29.6°C
39 Ponce 29.6°C
40 San Juan, La Puntilla, San Juan Bay, Puerto Rico San Juan 29.6°C
41 Tallaboa 29.5°C
42 Jauca 29.5°C
43 Playita Cortada 29.5°C
44 Potala Pastillo 29.5°C
45 Arroyo 29.5°C
46 Central Aguirre 29.5°C
47 Emajagua 29.5°C
48 Palmas 29.5°C
49 Punta Santiago 29.5°C
50 Lamboglia 29.5°C

Coldest 10 in Puerto Rico in October

Same data the other way. Helpful if you want to know which Puerto Rico coasts to avoid for swimming in October.

# Location October mean
1 Culebra 29.4°C
2 Flamenco Beach 29.4°C
3 Fajardo 29.4°C
4 Luquillo 29.4°C
5 Playa Fortuna 29.4°C
6 Bayamn 29.4°C
7 Carolina 29.4°C
8 Catano 29.4°C
9 Esperanza 29.4°C
10 Isabel Segunda 29.4°C

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