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Warmest sea temperatures in the world in September: ranked by sea temperature

Abu Dhabi tops the list at 33 °C in September. Ranked from 1991–2020 climate normals across 50 destinations in the world.

Top three in September: Abu Dhabi (33 °C) , Lusail (33 °C) , Doha (33 °C) . Between first and 50th place the sea temp differs by 3.5 °C.

# Destination Country Sea temp Avg high Avg low Rainfall Wet days Sunshine Sea temp
1 Abu Dhabi United Arab Emirates 33 °C 38 °C 28 °C 0 mm 0 339 h 33 °C
2 Lusail Qatar 33 °C 38 °C 27 °C 0 mm 0 333 h 33 °C
3 Doha Qatar 33 °C 39 °C 27 °C 0 mm 0 333 h 33 °C
4 Ar Rayyān Qatar 33 °C 40 °C 26 °C 0 mm 0 333 h 33 °C
5 Dubai United Arab Emirates 33 °C 40 °C 26 °C 1 mm 0 344 h 33 °C
6 Al Muharraq Bahrain 33 °C 35 °C 29 °C 0 mm 0 336 h 33 °C
7 Sharjah United Arab Emirates 33 °C 39 °C 27 °C 0 mm 0 346 h 33 °C
8 Bushehr Iran 32 °C 35 °C 29 °C 0 mm 0 337 h 32 °C
9 Dammam Saudi Arabia 32 °C 38 °C 27 °C 0 mm 0 337 h 32 °C
10 Al Jubayl Saudi Arabia 32 °C 39 °C 26 °C 0 mm 0 338 h 32 °C
11 Ras Al Khaimah United Arab Emirates 32 °C 37 °C 29 °C 0 mm 0 350 h 32 °C
12 Al Ḩudaydah Yemen 32 °C 37 °C 29 °C 12 mm 2 331 h 32 °C
13 Şabyā Saudi Arabia 32 °C 36 °C 29 °C 23 mm 4 330 h 32 °C
14 Bandar Abbas Iran 32 °C 38 °C 28 °C 2 mm 0 352 h 32 °C
15 Port Sudan Sudan 31 °C 38 °C 27 °C 1 mm 0 330 h 31 °C
16 Al Aḩmadī Kuwait 31 °C 41 °C 27 °C 0 mm 0 345 h 31 °C
17 Ḩawallī Kuwait 31 °C 40 °C 28 °C 0 mm 0 345 h 31 °C
18 Djibouti Djibouti 31 °C 36 °C 29 °C 7 mm 2 347 h 31 °C
19 Jeddah Saudi Arabia 31 °C 35 °C 27 °C 0 mm 0 336 h 31 °C
20 Berbera Somalia 31 °C 37 °C 29 °C 3 mm 1 343 h 31 °C
21 Muscat Oman 30 °C 35 °C 27 °C 0 mm 0 356 h 30 °C
22 Pétionville Haiti 30 °C 30 °C 23 °C 211 mm 24 323 h 30 °C
23 Los Mochis Mexico 30 °C 33 °C 26 °C 106 mm 11 327 h 30 °C
24 Delmas Haiti 30 °C 32 °C 24 °C 199 mm 23 323 h 30 °C
25 Acapulco de Juárez Mexico 30 °C 29 °C 24 °C 344 mm 24 260 h 30 °C
26 Bandar Seri Begawan Brunei 30 °C 30 °C 24 °C 196 mm 23 300 h 30 °C
27 Saint-Marc Haiti 30 °C 31 °C 25 °C 101 mm 20 330 h 30 °C
28 La Ceiba Honduras 30 °C 29 °C 25 °C 194 mm 27 318 h 30 °C
29 La Ceiba Honduras 30 °C 29 °C 25 °C 191 mm 27 318 h 30 °C
30 Mazatlán Mexico 30 °C 30 °C 25 °C 216 mm 21 293 h 30 °C
31 Sandakan Malaysia 30 °C 30 °C 24 °C 249 mm 27 319 h 30 °C
32 Chetumal Mexico 30 °C 30 °C 25 °C 188 mm 25 314 h 30 °C
33 Santiago de Cuba Cuba 30 °C 31 °C 24 °C 121 mm 20 325 h 30 °C
34 Aden Yemen 30 °C 34 °C 28 °C 22 mm 4 335 h 30 °C
35 Yanbu Saudi Arabia 30 °C 36 °C 27 °C 0 mm 0 336 h 30 °C
36 Kota Kinabalu Malaysia 30 °C 29 °C 24 °C 197 mm 22 299 h 30 °C
37 Ciudad Lázaro Cárdenas Mexico 30 °C 29 °C 24 °C 336 mm 23 279 h 30 °C
38 Sungai Petani Malaysia 30 °C 29 °C 24 °C 250 mm 27 270 h 30 °C
39 Kota Kuala Muda Malaysia 30 °C 29 °C 25 °C 244 mm 26 269 h 30 °C
40 Alor Setar Malaysia 30 °C 29 °C 24 °C 259 mm 26 279 h 30 °C
41 Bintulu Malaysia 30 °C 30 °C 24 °C 265 mm 25 278 h 30 °C
42 Puerto Vallarta Mexico 30 °C 30 °C 24 °C 320 mm 28 254 h 30 °C
43 Campeche Mexico 30 °C 32 °C 25 °C 175 mm 23 329 h 30 °C
44 Paya Terubong Malaysia 30 °C 28 °C 24 °C 247 mm 26 271 h 30 °C
45 Sitiawan Malaysia 30 °C 29 °C 25 °C 217 mm 24 285 h 30 °C
46 George Town Malaysia 30 °C 29 °C 25 °C 250 mm 26 271 h 30 °C
47 Miri Malaysia 30 °C 29 °C 25 °C 211 mm 25 295 h 30 °C
48 Ormoc Philippines 30 °C 29 °C 25 °C 268 mm 26 283 h 30 °C
49 Kapar Malaysia 30 °C 29 °C 24 °C 179 mm 21 292 h 30 °C
50 Tanjungbalai Indonesia 30 °C 30 °C 24 °C 294 mm 28 288 h 30 °C

Monthly values for the month named in the ranking; only destinations with a published climate page are ranked. Download this ranking as CSV.

The same ranking one month earlier and later

August: top 5

  1. Lusail 34 °C
  2. Abu Dhabi 34 °C
  3. Doha 34 °C
  4. Ar Rayyān 34 °C
  5. Al Muharraq 34 °C

Full ranking for August

October: top 5

  1. Şabyā 32 °C
  2. Abu Dhabi 31 °C
  3. Al Ḩudaydah 31 °C
  4. Dubai 31 °C
  5. Sharjah 31 °C

Full ranking for October

How this ranking is built

What is ranked
The average sea surface temperature at the coast, in °C, in September, highest first.
Period
1991–2020 climate normals: the same 30 years for every destination, so the list compares like with like.
Who is included
50 destinations in the world with a published climate page. Neighbouring places that share a climate series are shown once.
Ties
Equal values are ordered by beach score.
Sources
ERA5 / ERA5-Land reanalysis via Open-Meteo; sea temperature from NOAA OISST v2.1. Measured values are reproduced unchanged; only the ordering is ours.

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.