The Sri Lanka resorts with the warmest sea water temperature in January are Marissa, Weligama and Koggalla.
Below you can see a list of all popular Sri Lanka resorts and information about sea water temperature in January for the last two years.
| Resort Name | January 2025 | January 2024 | January 2023 |
|---|---|---|---|
| Marissa | 85.8°F | 86.7°F | 85.3°F |
| Weligama | 85.8°F | 86.8°F | 85.4°F |
| Koggalla | 85.7°F | 86.9°F | 85.5°F |
| Dikwella | 85.7°F | 86.6°F | 85.2°F |
| Halle | 85.7°F | 87.1°F | 85.6°F |
| Colombo | 85.7°F | 87.1°F | 85.5°F |
| Unawatuna | 85.7°F | 87.1°F | 85.6°F |
| Dehiwala Mount Lavinia | 85.7°F | 87.2°F | 85.5°F |
| Negombo | 85.7°F | 86.9°F | 84.9°F |
| Panadura | 85.6°F | 87.2°F | 85.5°F |
| Wadduwa | 85.6°F | 87.2°F | 85.5°F |
| Tangalle | 85.6°F | 86.5°F | 85.2°F |
| Marawila | 85.5°F | 86.9°F | 84.8°F |
| Kalutara | 85.1°F | 87.2°F | 85.4°F |
| Hikkaduwa | 85.1°F | 87.5°F | 85.6°F |
| Hambantota | 85.0°F | 86.4°F | 84.9°F |
| Pasikuda | 84.5°F | 86.0°F | 84.3°F |
| Batticaloa | 84.5°F | 86.1°F | 84.3°F |
| Beruwela | 84.3°F | 87.4°F | 85.4°F |
| Trincomalee | 84.1°F | 85.6°F | 83.9°F |
| Habarana | 84.1°F | 85.1°F | 84.0°F |
| Jafna | 83.6°F | 85.1°F | 83.5°F |
| Bentota | 83.6°F | 87.5°F | 85.5°F |
| Balapitiya | 83.4°F | 87.6°F | 85.5°F |
| Induruwa | 83.2°F | 87.5°F | 85.5°F |
| Ahungalla | 83.0°F | 87.6°F | 85.5°F |
Please see following sea water temperature averages charts for the warmest Sri Lanka resorts in January.
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
15
30
45
60
75
90
105
120
86.8
88
86.8
85.9
85.1
85.3
86.3
88.1
89.6
88.1
86.4
85.7
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
15
30
45
60
75
90
105
120
86.8
87.9
86.8
85.9
85.1
85.3
86.3
88.2
89.6
88.1
86.5
85.8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
15
30
45
60
75
90
105
120
86.9
88
86.9
86
85.3
85.4
86.5
88.3
89.7
88.2
86.5
85.8
You can also get the same information for the every other month of the year when the average sea water temperature is greater then 70°F.
