September weather forecast
Da Nang, Vietnam

September marks the beginning of the gentle fall season in Da Nang. The relentless summer heat starts to fade, replaced with a crisp yet warm breeze that sweeps across the city. Rainfall is still a regular event, further contributing to the slow decline in temperature. Of interest, September sees the most significant rainfall of the year at 183mm (7.2"). The arrival of October is an indication of further moderation in weather conditions, establishing the mid-range temperatures typical of Da Nang's autumn season.

Temperature

The transition into September in Da Nang shows a subtle variation to a moderately hot 29.5°C (85.1°F) from August's 30.8°C (87.4°F) in the average high-temperature. Throughout September, the temperature in Da Nang falls to an average low of 24.3°C (75.7°F).

Heat index

September's heat index is estimated at a torrid 37°C (98.6°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The average relative humidity in September is 83%.

Rainfall

In Da Nang, in September, during 24 rainfall days, 183mm (7.2") of precipitation is typically accumulated. Throughout the year, in Da Nang, there are 269.2 rainfall days, and 1570mm (61.81") of precipitation is accumulated.

Sea temperature

In Da Nang, the average seawater temperature in September is 28.9°C (84°F).
Note: For activities such as swimming and diving, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as particularly pleasant and satisfying for prolonged periods without feeling uneasy.

Daylight

In September, the average length of the day in Da Nang is 12h and 14min.
On the first day of the month, sunrise is at 05:34 and sunset at 18:00. On the last day of September, in Da Nang, Vietnam, sunrise is at 05:36 and sunset at 17:37 +07.

Sunshine

In September, the average sunshine is 8h.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index in Da Nang. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Always opt for UVA and UVB-resistant sunglasses on radiant days. Attention! The reflection of both water and sand can increase the intensity of UV rays.