September weather forecastCon Son, Vietnam
September
Weather in September
The weather in September in Con Son, Vietnam sees a continuation of the rainy season, with the highest recorded rainfall volume of 285mm (11.22"). The trend of warm temperatures persists, creating a steamy atmosphere typical of tropical climates. Meanwhile, the sea temperature shows a slight rise from August, providing warm seawater ideal for swimming and water sports. September's unique blend of warm temperatures and heavy rainfall shapes the climatic conditions within the city, seamlessly merging the sphere of land and water.Temperature
With the onset of September, a high-temperature average of a still tropical 31°C (87.8°F) emerges, matching that of August. In September, the nighttime temperature lowers to an average of 24°C (75.2°F).Rainfall
In Con Son, in September, during 21 rainfall days, 285mm (11.22") of precipitation is typically accumulated. In Con Son, during the entire year, the rain falls for 166 days and collects up to 2040mm (80.31") of precipitation.Sea temperature
In Con Son, the average seawater temperature in September is 28.8°C (83.8°F).Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities.
Daylight
In Con Son, the average length of the day in September is 12h and 10min.On the first day of the month, sunrise is at 05:44 and sunset at 18:01. On the last day of September, sunrise is at 05:41 and sunset at 17:44 +07.
Sunshine
The months with the least sunshine in Con Son are June through December, with an average of 5h of sunshine.UV index
February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an excessive health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 12 in September converts into the following recommendations:
Take every essential safety procedure. Individuals with fair skin could sustain burns in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Use liberally and reapply a broad-spectrum SPF 30+ sunscreen every two hours, or straight away after any outdoor workout or swim. Stay aware! UV radiation is magnified when reflecting off sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Con Son, Vietnam
- Average high temperature in September: 31°C
The warmest month (with the highest average high temperature) is April (33°C).
The months with the lowest average high temperature are January and December (29°C).
- Average low temperature in September: 24°C
The months with the highest average low temperature are April, May, June, July, August, September and October (24°C).
The coldest months (with the lowest average low temperature) are January, February and December (22°C).
Average rainfall in September
Con Son, Vietnam
- Average rainfall in September: 285mm
The wettest month (with the highest rainfall) is October (295mm).
The driest month (with the least rainfall) is March (43mm).
Average rainfall days in September
Con Son, Vietnam
- Average rainfall days in September: 21 days
The month with the highest number of rainy days is September (21 days).
The month with the least rainy days is February (5 days).
Average sea temperature in September
Con Son, Vietnam
- Average sea temperature in September: 28.8°C
The best month for swimming (with the highest average sea temperature) is May (29.8°C).
The coldest month (with the lowest average sea temperature) is January (24.9°C).
Average daylight in September /
Average sunshine in September
Con Son, Vietnam
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 5h
The months with the most sunshine are February and April (Average sunshine: 7h).
The months with the least sunshine are June, July, August, September, October, November and December (Average sunshine: 5h).
Average UV index in September
Con Son, Vietnam
- Average UV index in September: 12
The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).





