Average sea water temperature in December:
+83.2°F
| Minimum sea water temperature in December: | 85.3°F |
| Maximum sea water temperature in December: | 80.8°F |
Daily sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 82.4°F. The highest and lowest sea temperatures during the month were 83.7°F and 81.5°F.
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Monthly sea water temperature in Unawatuna, °F
Which Sri Lanka resorts have warmest sea in December?
| Place name | December 2025 | December 2024 |
|---|---|---|
| Wadduwa | 82.6°F | 84.0°F |
| Panadura | 82.6°F | 84.0°F |
| Hikkaduwa | 82.6°F | 83.6°F |
| Dehiwala Mount Lavinia | 82.5°F | 84.1°F |
| Colombo | 82.5°F | 84.1°F |
| Unawatuna | 82.4°F | 83.7°F |
| Halle | 82.4°F | 83.7°F |
| Koggalla | 82.4°F | 83.7°F |
| Weligama | 82.4°F | 83.6°F |
| Kalutara | 82.4°F | 83.1°F |
| Marissa | 82.4°F | 83.7°F |
| Hambantota | 82.4°F | 83.5°F |
| Tangalle | 82.4°F | 83.5°F |
| Dikwella | 82.4°F | 83.5°F |
| Marawila | 82.3°F | 83.9°F |
| Negombo | 82.2°F | 84.0°F |
| Beruwela | 81.9°F | 82.4°F |
| Pasikuda | 81.7°F | 82.5°F |
| Batticaloa | 81.6°F | 82.2°F |
| Balapitiya | 81.5°F | 82.0°F |
Best time for vacation in Unawatuna
Unawatuna on a weather map
Places in Sri Lanka:
Name
°F
24 Hours Forecast
Unawatuna
Local time: 04:30
December 30, tuesday
0600
75°F
SW
3 mph
3 mph
0900
81°F
S
2 mph
2 mph
1200
82°F
E
6 mph
6 mph
1500
81°F
E
8 mph
8 mph
1800
79°F
SE
9 mph
9 mph
2100
77°F
SE
9 mph
9 mph
December 31, wednesday
0000
77°F
SE
8 mph
8 mph
0300
75°F
S
7 mph
7 mph
