September weather forecast
Ngọc Lôi, Vietnam

The first month of the autumn, September, is also a hot month in Ngọc Lôi, Vietnam, with temperature in the range of an average low of 24.2°C (75.6°F) and an average high of 31.7°C (89.1°F).

Temperature

September brings an average high-temperature of a still tropical 31.7°C (89.1°F), showing a slight difference from August's 33.1°C (91.6°F). In the month of September, Ngọc Lôi experiences an average low-temperature of 24.2°C (75.6°F).

Heat index

For September, the heat index is appraised at a blisteringly hot 43°C (109.4°F). Be alert: Heat exhaustion along with heat cramps are probable. Heatstroke is a threat with sustained physical activity.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. 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

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

Rainfall

In Ngọc Lôi, during September, the rain falls for 18.5 days and regularly aggregates up to 73mm (2.87") of precipitation. In Ngọc Lôi, during the entire year, the rain falls for 181.2 days and collects up to 595mm (23.43") of precipitation.

Daylight

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

Sunshine

In September, the average sunshine 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 reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 7 in September leads to these guidelines:
Shield from overexposure. Defense against sun-related harm is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.