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Thanh Hóa weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Thanh Hóa?
For a warm holiday, the best week has been 13–19 March (Weather Index 81). Several start dates remain plausible, and the best timing varies between years. June is warmest (35°C), February is driest and May and June have the most sun.
- Warmest
- June 35°C
- Coolest
- January 21°C
- Driest
- February 14% rain-day chance
- Wettest
- September 70% rain-day chance
- Sunniest
- May and June 10 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Thanh Hóa
Thanh Hóa historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 21.4 | 16.2 | 21.3 | 6.6 | 39.9 | 4.9 |
| February | 22.3 | 16.9 | 13.9 | 3.9 | 19.0 | 5.7 |
| March | 25.4 | 20.2 | 19.0 | 5.9 | 34.3 | 6.9 |
| April | 29.2 | 23.3 | 22.7 | 6.8 | 63.7 | 8.7 |
| May | 32.7 | 26.3 | 47.7 | 14.8 | 177.9 | 9.8 |
| June | 35.0 | 28.6 | 43.3 | 13.0 | 122.2 | 9.7 |
| July | 34.0 | 28.0 | 58.4 | 18.1 | 280.0 | 8.8 |
| August | 32.9 | 27.3 | 67.7 | 21.0 | 325.3 | 7.7 |
| September | 31.8 | 26.2 | 69.7 | 20.9 | 333.5 | 7.9 |
| October | 28.8 | 23.6 | 50.0 | 15.5 | 193.8 | 7.1 |
| November | 26.2 | 20.6 | 31.0 | 9.3 | 72.3 | 7.4 |
| December | 22.3 | 16.8 | 16.1 | 5.0 | 27.5 | 5.8 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.