Warmest sea temperatures in the world in September
Abu Dhabi tops the list at 33 °C in September. Ranked from 1991–2020 climate normals across 50 destinations.
| # | Destination | Country | Sea temp | Avg high | Rainfall |
|---|---|---|---|---|---|
| 1 | Abu Dhabi | United Arab Emirates | 33 °C | 38 °C | 0 mm |
| 2 | Lusail | Qatar | 33 °C | 38 °C | 0 mm |
| 3 | Doha | Qatar | 33 °C | 39 °C | 0 mm |
| 4 | Ar Rayyān | Qatar | 33 °C | 40 °C | 0 mm |
| 5 | Dubai | United Arab Emirates | 33 °C | 40 °C | 1 mm |
| 6 | Al Muharraq | Bahrain | 33 °C | 35 °C | 0 mm |
| 7 | Sharjah | United Arab Emirates | 33 °C | 39 °C | 0 mm |
| 8 | Bushehr | Iran | 32 °C | 35 °C | 0 mm |
| 9 | Dammam | Saudi Arabia | 32 °C | 38 °C | 0 mm |
| 10 | Al Jubayl | Saudi Arabia | 32 °C | 39 °C | 0 mm |
| 11 | Ras Al Khaimah | United Arab Emirates | 32 °C | 37 °C | 0 mm |
| 12 | Al Ḩudaydah | Yemen | 32 °C | 37 °C | 12 mm |
| 13 | Şabyā | Saudi Arabia | 32 °C | 36 °C | 23 mm |
| 14 | Bandar Abbas | Iran | 32 °C | 38 °C | 2 mm |
| 15 | Port Sudan | Sudan | 31 °C | 38 °C | 1 mm |
| 16 | Al Aḩmadī | Kuwait | 31 °C | 41 °C | 0 mm |
| 17 | Ḩawallī | Kuwait | 31 °C | 40 °C | 0 mm |
| 18 | Djibouti | Djibouti | 31 °C | 36 °C | 7 mm |
| 19 | Jeddah | Saudi Arabia | 31 °C | 35 °C | 0 mm |
| 20 | Berbera | Somalia | 31 °C | 37 °C | 3 mm |
| 21 | Muscat | Oman | 30 °C | 35 °C | 0 mm |
| 22 | Pétionville | Haiti | 30 °C | 30 °C | 211 mm |
| 23 | Los Mochis | Mexico | 30 °C | 33 °C | 106 mm |
| 24 | Delmas | Haiti | 30 °C | 32 °C | 199 mm |
| 25 | Acapulco de Juárez | Mexico | 30 °C | 29 °C | 344 mm |
| 26 | Bandar Seri Begawan | Brunei | 30 °C | 30 °C | 196 mm |
| 27 | Saint-Marc | Haiti | 30 °C | 31 °C | 101 mm |
| 28 | La Ceiba | Honduras | 30 °C | 29 °C | 194 mm |
| 29 | La Ceiba | Honduras | 30 °C | 29 °C | 191 mm |
| 30 | Mazatlán | Mexico | 30 °C | 30 °C | 216 mm |
| 31 | Sandakan | Malaysia | 30 °C | 30 °C | 249 mm |
| 32 | Chetumal | Mexico | 30 °C | 30 °C | 188 mm |
| 33 | Santiago de Cuba | Cuba | 30 °C | 31 °C | 121 mm |
| 34 | Aden | Yemen | 30 °C | 34 °C | 22 mm |
| 35 | Yanbu | Saudi Arabia | 30 °C | 36 °C | 0 mm |
| 36 | Kota Kinabalu | Malaysia | 30 °C | 29 °C | 197 mm |
| 37 | Ciudad Lázaro Cárdenas | Mexico | 30 °C | 29 °C | 336 mm |
| 38 | Sungai Petani | Malaysia | 30 °C | 29 °C | 250 mm |
| 39 | Kota Kuala Muda | Malaysia | 30 °C | 29 °C | 244 mm |
| 40 | Alor Setar | Malaysia | 30 °C | 29 °C | 259 mm |
| 41 | Bintulu | Malaysia | 30 °C | 30 °C | 265 mm |
| 42 | Puerto Vallarta | Mexico | 30 °C | 30 °C | 320 mm |
| 43 | Campeche | Mexico | 30 °C | 32 °C | 175 mm |
| 44 | Paya Terubong | Malaysia | 30 °C | 28 °C | 247 mm |
| 45 | Sitiawan | Malaysia | 30 °C | 29 °C | 217 mm |
| 46 | George Town | Malaysia | 30 °C | 29 °C | 250 mm |
| 47 | Miri | Malaysia | 30 °C | 29 °C | 211 mm |
| 48 | Ormoc | Philippines | 30 °C | 29 °C | 268 mm |
| 49 | Kapar | Malaysia | 30 °C | 29 °C | 179 mm |
| 50 | Tanjungbalai | Indonesia | 30 °C | 30 °C | 294 mm |
Only destinations with a published page for that month are ranked. The ranking is ours; the underlying values are reproduced from the source.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: ranking order, beach and comfort scores. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.