September weather forecast
Thai Nguyen, Vietnam

The first month of the autumn, September, is still a hot month in Thai Nguyen, Vietnam, with an average temperature varying between 23°C (73.4°F) and 30.9°C (87.6°F).

Temperature

With the onset of September, the average high-temperature registers at a still hot 30.9°C (87.6°F), subtly different from August's 31.9°C (89.4°F). September nights experience a consistent temperature drop to a moderately hot 23°C (73.4°F).

Heat index

The heat index value during September is computed to be a blisteringly hot 41°C (105.8°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In Thai Nguyen, Vietnam, the average relative humidity in September is 81%.

Rainfall

In Thai Nguyen, during September, the rain falls for 22.6 days and regularly aggregates up to 150mm (5.91") of precipitation. Throughout the year, there are 236.7 rainfall days, and 1204mm (47.4") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 05:39 and sunset at 18:13. On the last day of September, sunrise is at 05:47 and sunset at 17:45 +07.

Sunshine

The average sunshine in September is 8.7h.

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 health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 7 during September leads to these advisories:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.