Average sea water temperature in September:
+82.7°F
| Minimum sea water temperature in September: | 85.5°F |
| Maximum sea water temperature in September: | 79.9°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 83.6°F. The highest and lowest sea temperatures during the month were 84.4°F and 82.2°F.
Monthly sea water temperature in Negombo, °F
Which Sri Lanka resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Jafna | 84.6°F | 85.0°F |
| Pasikuda | 84.5°F | 84.9°F |
| Batticaloa | 84.4°F | 85.6°F |
| Kalutara | 84.2°F | 83.8°F |
| Wadduwa | 84.0°F | 84.1°F |
| Beruwela | 84.0°F | 83.7°F |
| Panadura | 83.9°F | 84.1°F |
| Bentota | 83.9°F | 83.4°F |
| Dehiwala Mount Lavinia | 83.8°F | 84.1°F |
| Induruwa | 83.7°F | 83.3°F |
| Colombo | 83.7°F | 84.1°F |
| Trincomalee | 83.6°F | 83.7°F |
| Ahungalla | 83.6°F | 83.2°F |
| Negombo | 83.6°F | 84.2°F |
| Habarana | 83.5°F | 83.5°F |
| Hikkaduwa | 83.5°F | 83.9°F |
| Balapitiya | 83.5°F | 83.3°F |
| Unawatuna | 83.4°F | 83.9°F |
| Halle | 83.4°F | 83.9°F |
| Koggalla | 83.3°F | 83.8°F |
Best time for vacation in Negombo
Negombo on a weather map
Places in Sri Lanka:
Name
°F
24 Hours Forecast
Negombo
Local time: 11:42
December 05, friday
1200
82°F
E
7 mph
7 mph
1500
81°F
E
11 mph
11 mph
1800
81°F
S
9 mph
9 mph
2100
77°F
SW
11 mph
11 mph
December 06, saturday
0000
77°F
SW
8 mph
8 mph
0300
75°F
SW
9 mph
9 mph
0600
75°F
SW
9 mph
9 mph
0900
81°F
SW
7 mph
7 mph
