September weather forecast
Hoi An, Vietnam

Old wooden boats and yellow ancient buildings along the Thu Bon River, in the ancient town of Hoi An, Vietnam
Old wooden boats and yellow ancient buildings along the Thu Bon River, in the ancient town of Hoi An, Vietnam

Weather in September

The first month of the autumn, September, is also a hot month in Hoi An, Vietnam, with an average temperature ranging between min 24°C (75.2°F) and max 31°C (87.8°F).

Temperature

In September, the average high-temperature is practically the same as in August - a still tropical 31°C (87.8°F). The average low-temperature, in Hoi An, is 24°C (75.2°F).

Rainfall

In September, in Hoi An, the rain falls for 19 days. Throughout September, 297mm (11.69") of precipitation is accumulated. Throughout the year, in Hoi An, there are 144 rainfall days, and 1929mm (75.94") of precipitation is accumulated.

Daylight

In September, the average length of the day in Hoi An is 12h and 14min.
On the first day of September, sunrise is at 05:33 and sunset at 17:59. On the last day of the month, sunrise is at 05:36 and sunset at 17:37 +07.

Sunshine

In Hoi An, Vietnam, the average sunshine in September is 6h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Hoi An. A UV Index value of 11, and more, symbolizes an extreme health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 12 in September interpret into the following advice:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.
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FAQ

What is the temperature in September in Hoi An?

The average high-temperature, in September, in Hoi An, is 31°C (87.8°F), while the average low-temperature is 24°C (75.2°F).

How many days does it rain in September in Hoi An?

In September, in Hoi An, Vietnam, the rain falls for 19 days. Throughout September, 297mm (11.69") of precipitation is accumulated.

How many hours of daylight does Hoi An have in September?

In Hoi An, Vietnam, the average day length in September is 12h and 14min.

When are sunrise and sunset in September in Hoi An?

In September, on the first day of the month, sunrise is at 05:33 and sunset at 17:59. On the last day of the month, sunrise is at 05:36 and sunset at 17:37 +07.

How long on average sun shines in September in Hoi An?

In Hoi An, Vietnam, the average sunshine duration in September is 6h.

What is the month with the highest UV index in Hoi An?

The months with the highest UV index are March through September, with an average maximum UV index of 12.

How high is the UV index in September in Hoi An?

In Hoi An, Vietnam, the average daily maximum UV index in September is 12. A UV Index of 11, and more, symbolizes an ultimate hazard to health from unsafe exposure to Sun's UV rays.
Average rainfall days
Average sunshine
Average UV index

Average temperature in September
Hoi An, Vietnam

Average temperature in September - Hoi An, Vietnam
  • Average high temperature in September: 31°C

The warmest months (with the highest average high temperature) are June, July and August (33°C).
The month with the lowest average high temperature is January (25°C).

  • Average low temperature in September: 24°C

The month with the highest average low temperature is July (26°C).
The coldest month (with the lowest average low temperature) is January (19°C).

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Average rainfall in September
Hoi An, Vietnam

Average rainfall in September - Hoi An, Vietnam
  • Average rainfall in September: 297mm

The wettest month (with the highest rainfall) is October (526mm).
The driest month (with the least rainfall) is March (30mm).

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Average rainfall days in September
Hoi An, Vietnam

Average rainfall days in September - Hoi An, Vietnam
  • Average rainfall days in September: 19 days

The month with the highest number of rainy days is August (23 days).
The month with the least rainy days is February (4 days).

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Average daylight in September /
Average sunshine in September
Hoi An, Vietnam

Average daylight in September / Average sunshine in September - Hoi An, Vietnam
  • Average daylight in September: 12h and 14min

The month with the longest days is June (Average daylight: 13h and 4min).
The month with the shortest days is December (Average daylight: 11h and 12min).

  • Average sunshine in September: 6h

The months with the most sunshine are January, February, March, April, May and December (Average sunshine: 7h).
The months with the least sunshine are June and August (Average sunshine: 5h).

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Average UV index in September
Hoi An, Vietnam

Average UV index in September - Hoi An, Vietnam
  • Average UV index in September: 12

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The months with the lowest UV index are January, November and December (UV index 9).

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