Best time to visit Hoi An
Vietnam · 20-year averages
February is the best month in Hoi An, scoring 84 out of 100, with August the weakest at 40. The 44-point spread means timing is worth planning around without being decisive. The good window runs January to March — 3 months within ten points of the best.
June is the warmest month at 33.1 °C and January the coolest at 24.8 °C — a 8.3 °C spread across the year. 179 days a year top 30 °C, more than a third of the calendar, so heat is the baseline here rather than a season.
There is a real wet season here. August to December carry the rain — up to 23 wet days in a month — while February to April drop as low as 6. That 17-day gap is the biggest single difference between a good month and a bad one in Hoi An, and it moves further than the temperature does.
The sea never drops below 24.1 °C, so swimming is on the table year round. Daylight barely moves: about 13.1 hours whatever the month, which removes one variable from the decision entirely.
The three strongest months are February, January, March. The one to think twice about is August. Each month below has its own page with rainfall reliability, extremes, daylight, sea temperature and crowd levels.
Hoi An month by month
| Month | High °C | Low °C | Rain days | Daylight h | Sea °C | Score | Verdict |
|---|---|---|---|---|---|---|---|
| January | 24.8 | 20 | 13 | 11.3 | 24.2 | 76 | A good month |
| February | 26.3 | 20.2 | 6 | 11.6 | 24.1 | 84 | Prime time |
| March | 28.6 | 21.9 | 7 | 12 | 25.1 | 75 | A good month |
| April | 31.2 | 24.1 | 7 | 12.5 | 26.8 | 65 | A good month |
| May | 32.6 | 26 | 12 | 12.9 | 28.9 | 51 | Shoulder season |
| June | 33.1 | 26.8 | 11 | 13.1 | 29.9 | 52 | Shoulder season |
| July | 33 | 26.7 | 14 | 13 | 29.8 | 46 | A hard month |
| August | 32.6 | 26.7 | 19 | 12.7 | 29.9 | 40 | A hard month |
| September | 31.2 | 26.2 | 22 | 12.2 | 29.5 | 43 | A hard month |
| October | 29.2 | 24.9 | 23 | 11.8 | 28.1 | 51 | Shoulder season |
| November | 27.6 | 23.4 | 21 | 11.4 | 26.8 | 56 | Shoulder season |
| December | 25.3 | 21.2 | 20 | 11.2 | 25.4 | 65 | A good month |
Planning the rest of the trip
- Flight time to Hoi An how long you are actually in the air
- Hoi An time zone and the difference from home
- Days until your trip count down to the departure date