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Nam Định weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Nam Định?
For a warm holiday, the best week has been 7–13 April (Weather Index 85). Several start dates remain plausible, and the best timing varies between years. June and July are warmest (34°C), December is driest and May has the most sun.
- Warmest
- June and July 34°C
- Coolest
- January 21°C
- Driest
- December 16% rain-day chance
- Wettest
- August 76% rain-day chance
- Sunniest
- May 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 Nam Định
Nam Định 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 | 20.9 | 15.9 | 25.5 | 7.9 | 41.9 | 5.1 |
| February | 21.6 | 16.7 | 17.1 | 4.8 | 22.6 | 5.5 |
| March | 24.5 | 19.9 | 23.2 | 7.2 | 40.8 | 6.4 |
| April | 27.8 | 22.9 | 28.7 | 8.6 | 64.1 | 8.8 |
| May | 31.4 | 26.0 | 51.3 | 15.9 | 162.8 | 9.5 |
| June | 34.1 | 28.4 | 49.7 | 14.9 | 158.7 | 9.2 |
| July | 33.6 | 27.9 | 63.9 | 19.8 | 271.1 | 8.7 |
| August | 32.4 | 27.2 | 76.1 | 23.6 | 394.0 | 7.6 |
| September | 31.7 | 26.1 | 74.7 | 22.4 | 334.1 | 7.9 |
| October | 28.9 | 23.3 | 49.0 | 15.2 | 200.8 | 7.6 |
| November | 26.4 | 20.3 | 28.7 | 8.6 | 61.0 | 7.8 |
| December | 22.2 | 16.5 | 16.1 | 5.0 | 26.1 | 6.2 |
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.