September weather forecast
Vĩnh Hội, Vietnam

The first month of the autumn, September, is also a hot month in Vĩnh Hội, Vietnam, with temperature in the range of an average low of 25°C (77°F) and an average high of 30.2°C (86.4°F).

Temperature

With the onset of September, Vĩnh Hội's average high-temperature clocks in at a still hot 30.2°C (86.4°F), showing a minor fluctuation from the previous month. Vĩnh Hội records an average temperature drop to a moderately hot 25°C (77°F) in September.

Heat index

In September, the heat index is evaluated at a very hot 38°C (100.4°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
For clarity, heat index numbers account for light winds and areas under shade. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In September, the average relative humidity is 80%.

Rainfall

In Vĩnh Hội, during September, the rain falls for 24.8 days and regularly aggregates up to 134mm (5.28") of precipitation. In Vĩnh Hội, during the entire year, the rain falls for 260 days and collects up to 1343mm (52.87") of precipitation.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of the month, sunrise is at 05:31 and sunset at 17:54. On the last day of September, sunrise is at 05:32 and sunset at 17:33 +07.

Sunshine

The average sunshine in September in Vĩnh Hội is 8.6h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the maximum UV index of 7 suggests this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.