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Warmest sea in Puerto Rico in May

73 coastal locations in Puerto Rico ranked by their typical May sea temperature. Region-wide average in May: 28.1°C. The top of the list is where to find the warmest swimming this month.

Warmest in May

Mayagüez, Puerto Rico

28.5°C May mean in Puerto Rico

Regional May average

28.1°C

across all 73 coastal locations in Puerto Rico

Vs annual mean

-0.2°C

below the year-round regional average

What the Puerto Rico sea feels like in May

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 May fits in the year

May 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 May 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 May

Sorted by the typical May 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 May mean
1 Mayagüez, Puerto Rico Mayagüez 28.5°C
2 Puerto Real, Puerto Rico (sub) Cabo Rojo 28.5°C
3 Punta Guanajibo, Mayagüez, Puerto Rico Cabo Rojo 28.5°C
4 Guanica, Puerto Rico Guánica 28.4°C
5 Peñuelas (Punta Guayanilla), Puerto Rico Peñuelas 28.4°C
6 Bahía Salinas, Puerto Rico Cabo Rojo 28.4°C
7 Magueyes Island, Caribbean Sea, Puerto Rico Lajas 28.4°C
8 Playa de Ponce, Puerto Rico Ponce 28.4°C
9 Puerto Ponce Ponce 28.4°C
10 Capitanejo Juana Díaz 28.4°C
11 Playa Cortada, Puerto Rico Juana Díaz 28.4°C
12 Santa Isabel, Puerto Rico Santa Isabel 28.4°C
13 Arroyo, Puerto Rico Arroyo 28.3°C
14 Jobos Guayama 28.3°C
15 Las Mareas, Puerto Rico Guayama 28.3°C
16 Palmas Arroyo 28.3°C
17 La Parguera 28.3°C
18 Puerto Maunabo, Puerto Rico Maunabo 28.3°C
19 Punta Tuna Maunabo 28.3°C
20 Yabucoa Harbor, Puerto Rico Yabucoa 28.3°C
21 Aguadilla, Crashboat Beach, Puerto Rico Aguadilla 28.2°C
22 Boqueron 28.2°C
23 Cabo Rojo 28.2°C
24 Mayaguez 28.2°C
25 Mona Island, Puerto Rico Mayagüez 28.2°C
Show 25 more ▸
26 Puerto Real 28.2°C
27 Ponce 28.2°C
28 Esperanza, Vieques Island, Puerto Rico Vieques 28.1°C
29 Puerto Ferro, Isla de Vieques, Puerto Rico Vieques 28.1°C
30 Punta Mulas, Isla de Vieques, Puerto Rico Vieques 28.1°C
31 Naguabo, Puerto Rico Naguabo 28.1°C
32 Roosevelt Roads, Puerto Rico Ceiba 28.1°C
33 Tallaboa 28.1°C
34 Jauca 28.1°C
35 Playita Cortada 28.1°C
36 Potala Pastillo 28.1°C
37 Arroyo 28.1°C
38 Central Aguirre 28.1°C
39 Emajagua 28.0°C
40 Palmas 28.0°C
41 Punta Santiago 28.0°C
42 Aguadilla 28.0°C
43 Isabela 28.0°C
44 La Playa 28.0°C
45 Lamboglia 28.0°C
46 Rincon 28.0°C
47 Culebra, Puerto Rico Culebra 28.0°C
48 Culebrita, Isla, Puerto Rico Culebra 28.0°C
49 Ensenada Honda, Culebra Island, Puerto Rico Culebra 28.0°C
50 Fajardo, Puerto Rico Fajardo 28.0°C

Coldest 10 in Puerto Rico in May

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

# Location May mean
1 Carolina 27.6°C
2 Loiza 27.6°C
3 Bayamn 27.6°C
4 Catano 27.6°C
5 Isla Verde 27.6°C
6 Levittown 27.6°C
7 San Juan 27.6°C
8 Fajardo 27.6°C
9 Luquillo 27.6°C
10 Playa Fortuna 27.6°C

More on this region