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Vienna weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Vienna?
For a warm holiday, the best week has been 18–24 July (Weather Index 94). Several start dates remain plausible, and the best timing varies between years. July and August are warmest (27°C), March is driest and June has the most sun.
- Warmest
- July and August 27°C
- Coolest
- January 4°C
- Driest
- March 26% rain-day chance
- Wettest
- May 42% rain-day chance
- Sunniest
- June 13 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 Vienna
Vienna 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 | 4.2 | -0.9 | 32.9 | 10.2 | 35.8 | 5.0 |
| February | 7.8 | 1.0 | 27.9 | 7.8 | 31.6 | 6.8 |
| March | 11.8 | 2.5 | 25.8 | 8.0 | 34.3 | 8.7 |
| April | 16.2 | 6.3 | 32.0 | 9.6 | 51.9 | 10.0 |
| May | 19.9 | 10.4 | 42.3 | 13.1 | 75.8 | 10.7 |
| June | 26.0 | 15.5 | 36.7 | 11.0 | 73.8 | 12.6 |
| July | 27.5 | 16.8 | 36.8 | 11.4 | 69.0 | 12.4 |
| August | 27.3 | 16.7 | 33.2 | 10.3 | 65.0 | 11.3 |
| September | 22.2 | 12.6 | 30.3 | 9.1 | 86.2 | 9.1 |
| October | 16.1 | 8.2 | 28.4 | 8.8 | 48.0 | 7.2 |
| November | 8.8 | 3.3 | 30.0 | 9.0 | 45.1 | 5.1 |
| December | 5.2 | 0.6 | 31.3 | 9.7 | 46.1 | 4.4 |
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.