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

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.