September weather forecast
Dục Nội, Vietnam

The first month of the autumn, September, is still a hot month in Dục Nội, Vietnam, with an average temperature fluctuating between 31.7°C (89.1°F) and 24.2°C (75.6°F).

Temperature

As August transitions into September, the average high-temperature rests at a still tropical 31.7°C (89.1°F), maintaining a close resemblance to the previous month. Dục Nội experiences a consistent average temperature of 24.2°C (75.6°F) throughout the nights in September.

Heat index

The heat index value for September is estimated at an extremely hot 43°C (109.4°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Be aware that heat index ratings are designed for shaded locations and minor breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

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

Rainfall

In Dục Nội, in September, it is raining for 18.5 days, with typically 73mm (2.87") of accumulated precipitation. Throughout the year, there are 181.2 rainfall days, and 595mm (23.43") of precipitation is accumulated.

Daylight

In Dục Nội, the average length of the day in September 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

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 7 in September translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 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. Boost your sun resistance with garments that are densely woven yet spacious.