Average sea water temperature in September:
+85.4°F
| Minimum sea water temperature in September: | 87.6°F |
| Maximum sea water temperature in September: | 82.0°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 85.0°F. The highest and lowest sea temperatures during the month were 86.4°F and 84.0°F.
Monthly sea water temperature in Hoi An, °F
Which Vietnam resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Thanh Hoa | 86.0°F | 85.8°F |
| Hue | 85.8°F | 86.4°F |
| Cat Ba Island | 85.7°F | 86.0°F |
| Ha Long | 85.6°F | 85.9°F |
| Doc Let Beach | 85.4°F | 85.5°F |
| Tuan Chau | 85.3°F | 85.7°F |
| Nha Trang | 85.2°F | 85.1°F |
| Da Nang | 85.1°F | 86.2°F |
| Vinpearl | 85.0°F | 85.0°F |
| Hoi An | 85.0°F | 85.8°F |
| Cam Ranh | 84.9°F | 84.9°F |
| Hai Phong | 84.5°F | 84.9°F |
| Phan Rang | 84.0°F | 83.8°F |
| Phu Quoc | 84.0°F | 84.8°F |
| Con Dao | 84.0°F | 84.7°F |
| Ho Chi Minh | 83.8°F | 84.1°F |
| Vung Tau | 83.6°F | 84.2°F |
| Ke Ga | 82.4°F | 82.7°F |
| Mui Ne | 82.1°F | 82.4°F |
| Phan Thiet | 82.1°F | 82.4°F |
Best time for vacation in Hoi An
Hoi An on a weather map
Places in Vietnam:
Name
°F
24 Hours Forecast
Hoi An
Local time: 12:23
December 05, friday
1500
75°F
W
11 mph
11 mph
1800
73°F
SW
9 mph
9 mph
2100
73°F
W
11 mph
11 mph
December 06, saturday
0000
72°F
W
9 mph
9 mph
0300
72°F
W
7 mph
7 mph
0600
72°F
W
9 mph
9 mph
0900
75°F
W
8 mph
8 mph
1200
75°F
W
7 mph
7 mph
