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Long Bien weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Long Bien?
For a warm holiday, the best week has been 4–10 November (Weather Index 81). Favourable start dates for a 7-day trip run from 28 October to 28 November. 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 17% rain-day chance
- Wettest
- August 79% rain-day chance
- Sunniest
- May 9 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 Long Bien
Long Bien 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 | 21.0 | 15.4 | 27.7 | 8.6 | 48.0 | 4.4 |
| February | 22.0 | 16.2 | 26.4 | 7.4 | 39.9 | 4.5 |
| March | 25.2 | 19.5 | 33.2 | 10.3 | 55.0 | 4.7 |
| April | 28.8 | 22.6 | 36.7 | 11.0 | 85.3 | 7.3 |
| May | 32.0 | 25.5 | 59.0 | 18.3 | 207.9 | 8.6 |
| June | 34.3 | 27.8 | 61.0 | 18.3 | 219.9 | 8.5 |
| July | 33.9 | 27.5 | 69.7 | 21.6 | 290.3 | 8.4 |
| August | 32.9 | 26.8 | 79.0 | 24.5 | 406.4 | 7.5 |
| September | 32.2 | 25.9 | 72.7 | 21.8 | 311.8 | 7.8 |
| October | 29.2 | 23.0 | 44.2 | 13.7 | 183.3 | 7.6 |
| November | 26.5 | 19.9 | 25.7 | 7.7 | 47.2 | 7.3 |
| December | 22.2 | 15.9 | 17.1 | 5.3 | 27.0 | 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.