i October
Sea water temperature
Where is the sea warm enough to swim? Average water temperature for coastal destinations worldwide, by month.
The warmest seas in October
i 
Muscat
Oman
34° / 23° 30° Oct
Cartagena
Colombia
32° / 23° 29° Oct
i 
Malé
Maldives
30° / 26° 29° Oct
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i 
Havana
Cuba
30° / 23° 29° Oct
i 
Colombo
Sri Lanka
31° / 24° 28° Oct
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i 
Zanzibar
Tanzania
30° / 21° 27° Oct
i 
Honolulu
United States
30° / 22° 27° Oct
i 
Antalya
Türkiye
26° / 12° 25° Oct
i Kas
Türkiye
24° / 12° 25° Oct
i 
Rhodes
Greece
24° / 17° 24° Oct
Valletta
Malta
25° / 18° 24° Oct
i 
Funchal
Portugal
23° / 17° 23° Oct
Warmest coastal towns by country
| # | Country | Oct | How it feels | Sep → Nov | |
|---|---|---|---|---|---|
| 1 | Jizan |  Saudi Arabia | 32° | very warm | 32° → 31° |
| 2 | Al Līth | Saudi Arabia | 31° | very warm | 31° → 30° |
| 3 | Jebel Ali |  United Arab Emirates | 31° | very warm | 33° → 28° |
| 4 | Dubai Investments Park | United Arab Emirates | 31° | very warm | 33° → 28° |
| 5 | Djibouti |  Djibouti | 31° | very warm | 31° → 29° |
| 6 | Balbala | Djibouti | 31° | very warm | 31° → 29° |
| 7 | Doha |  Qatar | 31° | very warm | 33° → 27° |
| 8 | Lusail | Qatar | 31° | very warm | 33° → 27° |
| 9 | Saham | Oman | 30° | very warm | 31° → 28° |
| 10 | As Suwayq | Oman | 30° | very warm | 31° → 28° |
| 11 | Al Muharraq |  Bahrain | 30° | very warm | 33° → 26° |
| 12 | Manama | Bahrain | 30° | very warm | 33° → 26° |
| 13 | Manzanillo | Cuba | 30° | very warm | 31° → 28° |
| 14 | Manokwari |  Indonesia | 30° | very warm | 29° → 30° |
| 15 | Nabire | Indonesia | 30° | very warm | 29° → 30° |
| 16 | Acapulco de Juárez |  Mexico | 30° | very warm | 30° → 30° |
| 17 | Sandakan |  Malaysia | 30° | very warm | 30° → 29° |
| 18 | Mazatlán | Mexico | 30° | very warm | 30° → 27° |
| 19 | Kapar | Malaysia | 30° | very warm | 30° → 29° |
| 20 | Ormoc City |  Philippines | 30° | very warm | 30° → 29° |
| 21 | Darwin |  Australia | 30° | very warm | 28° → 31° |
| 22 | Santa Cruz de Mara |  Venezuela | 30° | very warm | 30° → 29° |
| 23 | San Rafael | Venezuela | 30° | very warm | 30° → 29° |
| 24 | Kāvali |  India | 30° | very warm | 29° → 28° |
| 25 | Cogan | Philippines | 30° | very warm | 30° → 29° |
| 26 | Narasapuram | India | 30° | very warm | 29° → 28° |
| 27 | Chon Buri |  Thailand | 29° | very warm | 29° → 29° |
| 28 | Si Racha | Thailand | 29° | very warm | 29° → 29° |
| 29 | Cartagena | Colombia | 29° | very warm | 30° → 29° |
| 30 | Puerto Cortez |  Honduras | 29° | very warm | 30° → 28° |
| 31 | Omoa | Honduras | 29° | very warm | 30° → 28° |
| 32 | Portmore |  Jamaica | 29° | very warm | 29° → 29° |
| 33 | Azua |  Dominican Republic | 29° | very warm | 29° → 29° |
| 34 | Georgetown |  Guyana | 29° | very warm | 29° → 29° |
| 35 | Hà Tiên |  Vietnam | 29° | very warm | 29° → 29° |
| 36 | Mayagüez |  Puerto Rico | 29° | very warm | 29° → 29° |
| 37 | Sihanoukville |  Cambodia | 29° | very warm | 29° → 29° |
| 38 | Santo Domingo | Dominican Republic | 29° | very warm | 29° → 28° |
| 39 | Ponce | Puerto Rico | 29° | very warm | 29° → 29° |
| 40 | Kalmunai | Sri Lanka | 29° | very warm | 29° → 29° |
NOAA OISST v2.1 · 1991–2020