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

The arrival of September brings an average high-temperature of a still hot 31°C (87.8°F), closely following the temperature pattern of August. During September, the average low-temperature is recorded at a warm 24°C (75.2°F).

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 Hoi An, the average length of the day in September 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, in Hoi An, sunrise is at 05:36 and sunset at 17:36 +07.

Sunshine

The average sunshine in September is 6h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an excessive health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index, 12 in September, converts into the following recommendations:
Execute all crucial precautions. Warding off sun exposure is non-negotiable. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Broad-spectrum SPF 30+ sunscreen must be generously applied and reapplied every two hours or post any outdoor activity or swim.