Average sea water temperature in September:
+85.7°F
| Minimum sea water temperature in September: | 89.2°F |
| Maximum sea water temperature in September: | 81.9°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 85.0°F. The highest and lowest sea temperatures during the month were 86.5°F and 82.6°F.
Monthly sea water temperature in Ha Long, °F
Which Vietnam resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Thanh Hoa | 85.4°F | 86.0°F |
| Cat Ba Island | 85.3°F | 85.7°F |
| Doc Let Beach | 85.2°F | 85.4°F |
| Da Nang | 85.1°F | 85.1°F |
| Hoi An | 85.0°F | 85.0°F |
| Ha Long | 85.0°F | 85.6°F |
| Con Dao | 85.0°F | 84.0°F |
| Hue | 84.8°F | 85.8°F |
| Cam Ranh | 84.7°F | 84.9°F |
| Tuan Chau | 84.7°F | 85.3°F |
| Nha Trang | 84.7°F | 85.2°F |
| Vinpearl | 84.5°F | 85.0°F |
| Phu Quoc | 84.3°F | 84.0°F |
| Vung Tau | 84.2°F | 83.6°F |
| Ho Chi Minh | 83.9°F | 83.8°F |
| Hai Phong | 83.8°F | 84.5°F |
| Phan Rang | 83.6°F | 84.0°F |
| Ke Ga | 83.5°F | 82.4°F |
| Phan Thiet | 82.8°F | 82.1°F |
| Mui Ne | 82.8°F | 82.1°F |
Best time for vacation in Ha Long
Ha Long on a weather map
Places in Vietnam:
Name
°F
24 Hours Forecast
Ha Long
Local time: 02:17
October 05, monday
0300
72°F
S
10 mph
10 mph
0600
70°F
S
7 mph
7 mph
0900
75°F
S
8 mph
8 mph
1200
81°F
S
9 mph
9 mph
1500
81°F
SW
8 mph
8 mph
1800
73°F
S
9 mph
9 mph
2100
73°F
S
8 mph
8 mph
October 06, tuesday
0000
72°F
S
7 mph
7 mph
