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Binjai weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Binjai?
For a warm holiday, the best week has been 4–10 February (Weather Index 64). Favourable start dates for a 7-day trip run from 29 January to 8 February. May to August are warmest (33°C), July is driest and February, June and July have the most sun.
- Warmest
- May to August 33°C
- Coolest
- December 30°C
- Driest
- July 72% rain-day chance
- Wettest
- November 97% rain-day chance
- Sunniest
- February, June and July 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 Binjai
Binjai 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 | 30.8 | 23.1 | 82.3 | 25.5 | 254.7 | 8.5 |
| February | 31.3 | 23.0 | 80.0 | 22.4 | 187.0 | 9.7 |
| March | 32.0 | 23.2 | 78.7 | 24.4 | 205.9 | 9.4 |
| April | 32.4 | 23.5 | 92.3 | 27.7 | 246.5 | 8.7 |
| May | 32.6 | 23.9 | 90.6 | 28.1 | 287.0 | 8.7 |
| June | 32.6 | 23.2 | 82.0 | 24.6 | 204.6 | 9.7 |
| July | 33.0 | 23.1 | 71.6 | 22.2 | 154.0 | 9.8 |
| August | 32.6 | 23.0 | 82.6 | 25.6 | 224.7 | 9.1 |
| September | 32.1 | 23.0 | 93.3 | 28.0 | 267.6 | 8.6 |
| October | 31.4 | 23.0 | 91.0 | 28.2 | 320.5 | 8.0 |
| November | 30.6 | 23.2 | 96.7 | 29.0 | 405.4 | 6.7 |
| December | 30.2 | 23.2 | 90.0 | 27.9 | 365.3 | 7.5 |
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.