Where is the sea warmest in the world in December?
In December the warmest sea in the world is at Darwin, Australia, at 31.0°C. 971 of 1,642 cities measured are comfortable this month.
| # | City | Country | Sea | Swimming |
|---|---|---|---|---|
| 1 | Darwin | Australia | 31.0°C | Bath-like |
| 2 | Suai | Timor Leste | 30.4°C | Bath-like |
| 3 | Besalampy | Madagascar | 30.4°C | Bath-like |
| 4 | Kimbe | Papua New Guinea | 30.3°C | Bath-like |
| 5 | Malango | Solomon Islands | 30.3°C | Bath-like |
| 6 | Gizo | Solomon Islands | 30.3°C | Bath-like |
| 7 | Lae | Papua New Guinea | 30.3°C | Bath-like |
| 8 | Arawa | Papua New Guinea | 30.2°C | Bath-like |
| 9 | Rabaul | Papua New Guinea | 30.2°C | Bath-like |
| 10 | Kavieng | Papua New Guinea | 30.2°C | Bath-like |
| 11 | Honiara | Solomon Islands | 30.2°C | Bath-like |
| 12 | Auki | Solomon Islands | 30.2°C | Bath-like |
| 13 | Morondava | Madagascar | 30.1°C | Bath-like |
| 14 | Kokopo | Papua New Guinea | 30.1°C | Bath-like |
| 15 | Alotau | Papua New Guinea | 30.1°C | Bath-like |
| 16 | Lorengau | Papua New Guinea | 30.0°C | Bath-like |
| 17 | Daru | Papua New Guinea | 30.0°C | Bath-like |
| 18 | Funafuti | Tuvalu | 30.0°C | Bath-like |
| 19 | Savave Village | Tuvalu | 30.0°C | Bath-like |
| 20 | Hell-Ville | Madagascar | 30.0°C | Bath-like |
| 21 | Surabaya | Indonesia | 29.9°C | Bath-like |
| 22 | Mahajanga | Madagascar | 29.9°C | Bath-like |
| 23 | Kupang | Indonesia | 29.9°C | Bath-like |
| 24 | Serasa | Brunei | 29.9°C | Bath-like |
| 25 | Baukau | Timor Leste | 29.9°C | Bath-like |
Ranked on the NOAA OISST monthly climatology — a long-run average for December, not a forecast. A given December will run warmer or cooler than this, and the sea is warmest late in the afternoon and late in the season.