September weather forecast
Chương Dương, Vietnam

September, the first month of the autumn in Chương Dương, is also a hot month, with an average temperature varying between 24.2°C (75.6°F) and 31.7°C (89.1°F).

Temperature

As September takes hold, the average high-temperature is a still tropical 31.7°C (89.1°F), nearly mirroring that of the previous month. Chương Dương encounters a steady low-temperature average of 24.2°C (75.6°F) throughout the month of September.

Heat index

In September, the average heat index is calculated to be a blisteringly hot 43°C (109.4°F). Take note: Heat exhaustion and heat cramps are expected. Heatstroke can occur with prolonged effort.
Be aware that heat index ratings are designed for shaded locations and minor breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

August and September, with an average relative humidity of 80%, are the most humid months.

Rainfall

In September, the rain falls for 18.5 days. Throughout September, 73mm (2.87") of precipitation is accumulated. In Chương Dương, during the entire year, the rain falls for 181.2 days and collects up to 595mm (23.43") of precipitation.

Daylight

In September, the average length of the day is 12h and 16min.
On the first day of the month, sunrise is at 05:40 and sunset at 18:12. On the last day of September, sunrise is at 05:47 and sunset at 17:45 +07.

Sunshine

The average sunshine in September is 8.5h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.