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Sea Temperature in Ha Long in September
Complete information on the sea temperature range in the South China Sea in Ha Long in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Ha Long. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Water Temperature Range in Ha Long in September
26°C
MINIMUN
29°C
AVERAGE
32°C
MAXIMUM
Historical Data of Water Temperature in September in Ha Long
Water Temperature Chart for South China Sea in Ha Long in September
Sea Temperature Table in Ha Long in September Over the Past Years
Day | 2024 | 2023 | 2022 | Average |
---|---|---|---|---|
Sep 1 | 30°C | 31°C | 30°C | 30.3°C |
Sep 2 | 30°C | 31°C | 30°C | 30.3°C |
Sep 3 | 30°C | 31°C | 30°C | 30.3°C |
Sep 4 | 30°C | 32°C | 31°C | 30.8°C |
Sep 5 | 30°C | 31°C | 31°C | 30.5°C |
Sep 6 | 30°C | 31°C | 31°C | 30.5°C |
Sep 7 | 30°C | 31°C | 30°C | 30.3°C |
Sep 8 | 30°C | 30°C | 31°C | 30.3°C |
Sep 9 | 30°C | 30°C | 31°C | 30.3°C |
Sep 10 | 30°C | 31°C | 30°C | 30.3°C |
Sep 11 | 30°C | 30°C | 30°C | 30.0°C |
Sep 12 | 30°C | 30°C | 30°C | 30.3°C |
Sep 13 | 31°C | 30°C | 30°C | 30.3°C |
Sep 14 | 31°C | 31°C | 30°C | 30.3°C |
Sep 15 | 31°C | 30°C | 29°C | 29.8°C |
Sep 16 | 31°C | 31°C | 30°C | 30.5°C |
Sep 17 | 30°C | 30°C | 30°C | 30.0°C |
Sep 18 | 30°C | 30°C | 30°C | 30.0°C |
Sep 19 | 30°C | 29°C | 31°C | 29.8°C |
Sep 20 | 30°C | 29°C | 31°C | 29.8°C |
Sep 21 | 30°C | 29°C | 30°C | 29.8°C |
Sep 22 | 30°C | 29°C | 30°C | 29.8°C |
Sep 23 | 30°C | 30°C | 31°C | 30.3°C |
Sep 24 | 30°C | 29°C | 30°C | 29.5°C |
Sep 25 | 30°C | 30°C | 30°C | 29.8°C |
Sep 26 | 30°C | 29°C | 30°C | 29.3°C |
Sep 27 | 30°C | 30°C | 31°C | 29.8°C |
Sep 28 | 30°C | 29°C | 30°C | 29.3°C |
Sep 29 | 30°C | 29°C | 30°C | 29.5°C |



Ha Long Climate and Swimming Opportunities in September
31°C
Average Day Air Temperature
24°C
Average Night Air Temperature
293 mm
Precipitation Amount per Month
16 days
Number of Rainy Days
12 hrs
Daylight
per Day
6 hrs
Sunshine
per Day
8 km/h
Average Wind Speed
81%
Average
humidity
Ha Long lies within in Vietnam. The average daytime temperature in Ha Long in September is 31°C (88°F), while the nighttime average is 24°C (76°F). There are typically 16 rainy days during the month, with a total precipitation of 293 mm (11.5 inches). The daylight duration in September in Ha Long is 12 hours, with an average of 6 hours of sunshine per day. The average wind speed in September is 8 km/h (5 mph), and the humidity level is around 81%.
The water temperature in Ha Long in September ranges from 29°C to 30°C (84°F to 86°F). At the beginning of the month, the average temperature is around 30°C (86°F), shifting to 30°C (86°F) by mid-September and reaching 30°C (86°F) in the last ten days. Overall, the average sea temperature in Ha Long for September is 30°C (86°F). The water is almost like a bath, perfect for those who prefer very warm conditions. However, it may not be as refreshing on extremely hot days.
Frequently Asked Questions About Water Temperatures in September in Ha Long
What is the sea temperature in Ha Long in September?
The water temperature in the South China Sea in Ha Long in September ranges from 29°C to 30°C (84°F to 86°F).
Is it possible to swim in the South China Sea in Ha Long in September?
The average sea temperature in Ha Long in September is 30°C (86°F), and the air temperature is 31°C (88°F), so the water is almost like a bath, perfect for those who prefer very warm conditions. However, it may not be as refreshing on extremely hot days.