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

Da Nang experiences a recorded average high-temperature of a warm 29.5°C (85.1°F) in September, closely aligned with August's 30.8°C (87.4°F). During September, the temperature is averaged to a low of 24.3°C (75.7°F) at night.

Heat index

For most parts of September, the heat index is computed to be a torrid 37°C (98.6°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. 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 of high significance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In September, the average relative humidity is 83%.

Rainfall

In Da Nang, in September, during 24 rainfall days, 183mm (7.2") of precipitation is typically accumulated. In Da Nang, during the entire year, the rain falls for 269.2 days and collects up to 1570mm (61.81") of precipitation.

Sea temperature

In September, the average sea temperature is 28.9°C (84°F).
Note: Swimming, diving, and other activities in water temperatures between 25°C (77°F) and 29°C (84.2°F) are thought to be quite enjoyable and satisfying for extended periods, with no discomfort.

Daylight

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

Sunshine

In Da Nang, the average sunshine in September is 8h.

UV index

The months with the highest UV index are April through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: An average UV index of 7 in September transforms into this advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Caution! The mirror effect of sand and water ups the UV radiation strength.