Climate Insights for Hoi An

The climate in Hoi An is hot. The average annual temperature is 26°C and approximately 2703mm of precipitation falls per year. Hoi An receives a notable amount of rainfall throughout the year, including during its driest month. Hoi An is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, August, July. The coldest months are January, February, December, when temperatures can drop to 21°C.

Hoi An sees moderate temperature variation throughout the year, ranging from 21°C to 33°C. The warmest month is June, when average highs reach 33°C and the mean temperature sits around 30°C. January is the coolest month, with minimum temperatures around 21°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between November and December, with a 2°C shift in average temperatures.

Hoi An is a very wet location, receiving approximately 2703mm of precipitation annually, which averages out to around 225mm per month. The wettest month is October, averaging 556mm of rainfall. November and December also tend to see above-average precipitation. The driest month is April, with just 78mm. That's 478mm less than October, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Hoi An is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 11km/h in winter, 9km/h in spring, 7km/h in summer, 10km/h in autumn.

It is currently autumn in Hoi An, which began on September 23, 2026. Hoi An is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in June at around 33°C, while the coldest stretch bottoms out in January near 21°C. Winter is next, beginning on December 21, 2026 (88 days from now).

The best time to visit Hoi An is during March, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 90mm per month. By contrast, June can be uncomfortably hot with highs reaching 33°C, while January is the coldest period with lows dropping to 21°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Hoi An based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.