September weather forecast
Hoi An, Vietnam

September brings the highest rainfall of the year to Hoi An, with a significant increase to 297mm (11.69"). Despite the heavy rain, the city maintains a warm climate throughout the month. The increase in rainfall marks the peak of the monsoon season and offers a unique perspective regarding Vietnamese cuisine as the region enjoys a bounty of fresh produce and abundant seafood. The spectacle of rain-soaked streets and traditional Vietnamese umbrellas create a unique setting that is enchanting to locals and visitors alike.

Temperature

September's beginning signals an average high-temperature of a still tropical 31°C (87.8°F), barely different from August's 33°C (91.4°F). An average low-temperature of 24°C (75.2°F) is common during the nights of September.

Rainfall

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

Daylight

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

Sunshine

In September, the average sunshine is 6h.

UV index

The months with the highest UV index in Hoi An are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 12 translates into the following recommendations:
Enforce all necessary safety measures, unprotected skin may suffer burns swiftly. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Even when the sky is cloudy, apply generously and frequently reapply a sunscreen with SPF 30 or more, especially post every swim or outdoor exercise.