September weather forecast
Da Nang, Vietnam

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Weather in September

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.

Frequently asked questions

How hot is September?

The high-temperature, in September, in Da Nang, records 29.5°C (85.1°F), while the low-temperature is 24.3°C (75.7°F). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is computed to be 37°C (98.6°F).

What is the average humidity in September?

The average relative humidity in September is 83%.

How much does it rain in September?

In Da Nang, in September, it is raining for 24 days, with typically 183mm (7.2") of accumulated precipitation.

How warm is the water in September?

In Da Nang, the average seawater temperature in September is 28.9°C (84°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Da Nang have in September?

In Da Nang, the average day length in September is 12h and 14min.

What time are sunrise and sunset in September?

In September, on the first day of the month, 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.

How many hours of sunshine does Da Nang have in September?

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

What are the months with the highest UV index?

April through September, with an average maximum UV index of 7, are months with the highest UV index.

How high is the UV index in September?

In Da Nang, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.

Average temperature in September
Da Nang, Vietnam

Average temperature in September - Da Nang, Vietnam
  • Average high temperature in September: 29.5°C

The warmest month (with the highest average high temperature) is June (31.8°C).
The month with the lowest average high temperature is January (22.5°C).

  • Average low temperature in September: 24.3°C

The month with the highest average low temperature is June (25.3°C).
The coldest month (with the lowest average low temperature) is January (19.3°C).

Average pressure in September
Da Nang, Vietnam

Average pressure in September - Da Nang, Vietnam
  • Average pressure in September: 1007.9mbar

The month with the highest atmospheric pressure is January (1016.4mbar).
The month with the lowest atmospheric pressure is July (1005.6mbar).

Average wind speed in September
Da Nang, Vietnam

Average wind speed in September - Da Nang, Vietnam
  • Average wind speed in September: 8.4km/h

The windiest month (with the highest average wind speed) is December (10.7km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).

Average humidity in September
Da Nang, Vietnam

Average humidity in September - Da Nang, Vietnam
  • Average humidity in September: 83%

The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is June (79%).

Average rainfall in September
Da Nang, Vietnam

Average rainfall in September - Da Nang, Vietnam
  • Average rainfall in September: 183mm

The wettest month (with the highest rainfall) is November (275mm).
The driest month (with the least rainfall) is February (49mm).

Average rainfall days in September
Da Nang, Vietnam

Average rainfall days in September - Da Nang, Vietnam
  • Average rainfall days in September: 24 days

The month with the highest number of rainy days is January (25.5 days).
The month with the least rainy days is February (15.8 days).

Average sea temperature in September
Da Nang, Vietnam

Average sea temperature in September - Da Nang, Vietnam
  • Average sea temperature in September: 28.9°C

The best month for swimming (with the highest average sea temperature) is July (29.9°C).
The coldest months (with the lowest average sea temperature) are January, February and March (23.3°C).

Average daylight in September /
Average sunshine in September
Da Nang, Vietnam

Average daylight in September / Average sunshine in September - Da Nang, Vietnam
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 12min).

  • Average sunshine in September: 8h and 0min

The months with the most sunshine are May and June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 2h and 42min).

Average sunshine days in September
Da Nang, Vietnam

Average sunshine days in September - Da Nang, Vietnam
  • Average sunshine days in September: 4.5 days

The month with the most sunshine days is March (10.4 days).
The month with the least sunshine days is January (3.7 days).

Average UV index in September
Da Nang, Vietnam

Average UV index in September - Da Nang, Vietnam
  • Average UV index in September: 7

The months with the highest UV index are April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, November and December (UV index 5).

Average cloud cover in September
Da Nang, Vietnam

Average cloud cover in September - Da Nang, Vietnam
  • Average cloud cover in September: 42

The month with the most cloud cover is December (Cloud cover 76).
The month with the least cloud cover is May (Cloud cover 31).

Average visibility in September
Da Nang, Vietnam

Average visibility in September - Da Nang, Vietnam
  • Average visibility in September: 9km

The months with the highest visibility are June, July and August (10km).
The month with the lowest visibility is March (8km).

Da Nang, Vietnam

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