Average sea water temperature in September:
+82.7°F
| Minimum sea water temperature in September: | 85.3°F |
| Maximum sea water temperature in September: | 80.1°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 84.5°F. The highest and lowest sea temperatures during the month were 85.3°F and 83.8°F.
Monthly sea water temperature in Colombo, °F
Which Sri Lanka resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Pasikuda | 85.2°F | 84.5°F |
| Bentota | 85.2°F | 83.9°F |
| Batticaloa | 85.1°F | 84.4°F |
| Induruwa | 85.1°F | 83.7°F |
| Beruwela | 85.1°F | 84.0°F |
| Kalutara | 85.1°F | 84.2°F |
| Wadduwa | 85.1°F | 84.0°F |
| Ahungalla | 85.0°F | 83.6°F |
| Panadura | 84.9°F | 83.9°F |
| Balapitiya | 84.9°F | 83.5°F |
| Jafna | 84.8°F | 84.6°F |
| Dehiwala Mount Lavinia | 84.6°F | 83.8°F |
| Colombo | 84.5°F | 83.7°F |
| Hikkaduwa | 84.4°F | 83.5°F |
| Negombo | 84.3°F | 83.6°F |
| Trincomalee | 84.2°F | 83.6°F |
| Marawila | 84.0°F | 83.3°F |
| Unawatuna | 83.9°F | 83.4°F |
| Halle | 83.9°F | 83.4°F |
| Marissa | 83.9°F | 83.3°F |
Best time for vacation in Colombo
Colombo on a weather map
Places in Sri Lanka:
Name
°F
24 Hours Forecast
Colombo
Local time: 05:00
September 16, wednesday
0600
81°F
NE
11 mph
11 mph
0900
82°F
NE
12 mph
12 mph
1200
81°F
NE
12 mph
12 mph
1500
81°F
NE
14 mph
14 mph
1800
82°F
NE
12 mph
12 mph
2100
82°F
NE
13 mph
13 mph
September 17, thursday
0000
81°F
NE
14 mph
14 mph
0300
81°F
N
12 mph
12 mph
