Hoi An has a tropical monsoon climate, classified as Am in the Köppen system. The warmest month is June with an average high of 33°C, while the coldest month is January with lows dropping to 20°C. The annual temperature range of 13°C indicates a relatively stable climate year-round.
The driest month is April with only 9 rain days and 72mm of precipitation. For travellers, April through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 78% to 78% throughout the year.
Best Time to Visit Hoi An
Based on temperature and rainfall data, the best months to visit Hoi An are February, March, April. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
In June, Hoi An experiences average highs of 33°C (91°F) and lows of 27°C (81°F). Expect around 14 rainy days and 11 hours of sunshine per day, with humidity averaging 78%. The 6°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 9, so sun protection is advisable on clear days.
Hoi An typically sees 14 rainy days in June, with total precipitation of around 83mm. Rain is moderate and manageable. Showers tend to pass quickly, and a light rain layer or foldable umbrella is sufficient protection for most days. For context, the driest month in Hoi An typically sees 4-6 fewer rain days than June.
Pack lightweight, breathable clothing (linen or cotton), a wide-brim sun hat, SPF 50+ sunscreen, and a refillable water bottle for Hoi An in June. The 33°C daytime heat demands sun protection during midday hours, typically 11am to 4pm. A compact travel umbrella is also worth packing, as 14 rainy days means afternoon showers are a real possibility. Quick-dry synthetic fabrics are preferable to cotton in 78% humidity.
June is a reasonable time to visit Hoi An. Expect 14 rainy days, so pack a light rain layer for flexibility. Average temperatures of 33°C make outdoor exploration comfortable during the dry periods. With 11 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.
The average high temperature in Hoi An in June is 33°C (91°F), and the average low is 27°C (81°F). The mean daily temperature is approximately 30°C (86°F). The day-to-night range of 6°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Hoi An is generally April. April offers the most sunshine at 11 hours per day and only 9 rainy days. Average temperatures reach 30°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around April gives you the best chance of dry, bright weather.
June is shoulder or low season in Hoi An, meaning fewer tourists and generally lower prices than peak months. With 11 sunshine hours and 14 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In June, Hoi An suits a range of activities thanks to warm temperatures of 33°C. Mix of indoor and outdoor activities works well given the moderate chance of rain. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 11 hours of sunshine, parks and waterfront walks are particularly enjoyable.