Best time to visit Thanh Hóa
Vietnam · 20-year averages
Thanh Hóa is a city of two halves. February scores 92 and July scores 37 — a 55-point swing, which is the difference between a holiday and an endurance test. The month you pick matters more here than almost anywhere. 4 of the twelve months sit within ten points of the best, so there is more than one right answer.
June is the warmest month at 32.9 °C and January the coolest at 21.5 °C — a 11.4 °C spread across the year. 164 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. July to September carry the rain — up to 23 wet days in a month — while January, February, March, November and December drop as low as 5. That 18-day gap is the biggest single difference between a good month and a bad one in Thanh Hóa, and it moves further than the temperature does.
The sea never drops below 21 °C, so swimming is on the table year round. Daylight runs from 10.9 hours in winter to 13.3 in summer, enough to notice on a sightseeing itinerary.
The three strongest months are February, January, December. The one to think twice about is July. Each month below has its own page with rainfall reliability, extremes, daylight, sea temperature and crowd levels.
Thanh Hóa month by month
| Month | High °C | Low °C | Rain days | Daylight h | Sea °C | Score | Verdict |
|---|---|---|---|---|---|---|---|
| January | 21.5 | 13.3 | 5 | 11.1 | 21.5 | 91 | Prime time |
| February | 24.3 | 15.4 | 5 | 11.5 | 21 | 92 | Prime time |
| March | 27.3 | 18.3 | 9 | 12 | 21.8 | 80 | Prime time |
| April | 30.9 | 21.7 | 10 | 12.6 | 24.2 | 63 | Shoulder season |
| May | 32.5 | 24.8 | 18 | 13.1 | 27.6 | 39 | A hard month |
| June | 32.9 | 26.2 | 18 | 13.3 | 29.6 | 37 | A hard month |
| July | 32.6 | 26.2 | 20 | 13.2 | 29.8 | 37 | A hard month |
| August | 31.6 | 25.9 | 23 | 12.8 | 30 | 40 | A hard month |
| September | 30.6 | 24.7 | 20 | 12.3 | 29.5 | 44 | A hard month |
| October | 28.3 | 21.8 | 15 | 11.7 | 28 | 59 | Shoulder season |
| November | 25.6 | 18.2 | 9 | 11.2 | 26.1 | 83 | Prime time |
| December | 21.9 | 13.9 | 5 | 10.9 | 23.4 | 91 | Prime time |
Planning the rest of the trip
- Flight time to Thanh Hóa how long you are actually in the air
- Thanh Hóa time zone and the difference from home
- Days until your trip count down to the departure date