Vienna records about 620mm of rain across roughly 99 wet days a year, which is a 27% chance on an average day. June is the wettest month at 70mm (11% of the annual total) and January the driest at 38mm. Local rain type: thunderstorms. Summer thunderstorms can be dramatic but pass quickly. Carry an umbrella from May through August. Winter precipitation is often snow, creating a magical atmosphere.
Chance of rain on an average day: 27%
Rainfall climatology for Vienna. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 620mm |
| Rain days per year | 99 |
| Odds on an average day | 27% |
| Wettest month | June — 70mm over 11 days |
| Driest month | January — 38mm over 6 days |
| Rain type | thunderstorms |
| Best dry window | September through November offers golden autumn light with lower rainfall and comfortable temperatures. |
| Worst rain window | June and July bring the most rain via afternoon thunderstorms, but mornings are usually clear and sunny. |
June delivers 84% more rain than January (70mm vs 38mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 11% of the annual total, so rain in Vienna is spread through the year — there is no season you can rely on being dry.
Vienna rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 11 days in June against 6 in January — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 38mm | 6 | 20% | 3°C |
| February | 42mm | 7 | 23% | 3°C |
| March | 47mm | 7 | 23% | 6°C |
| April | 52mm | 8 | 27% | 12°C |
| May | 62mm | 10 | 33% | 17°C |
| June | 70mm | 11 | 37% | 23°C |
| July | 68mm | 11 | 37% | 26°C |
| August | 58mm | 9 | 30% | 26°C |
| September | 54mm | 9 | 30% | 23°C |
| October | 40mm | 6 | 20% | 17°C |
| November | 50mm | 8 | 27% | 12°C |
| December | 44mm | 7 | 23% | 6°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Vienna we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Vienna records rain on roughly 99 days a year — about a 27% chance on any given day — totalling around 620mm.
June, with about 70mm over 11 rain days. That is 11% of the entire year's rainfall in a single month.
January is the driest month at 38mm across roughly 6 days. September through November offers golden autumn light with lower rainfall and comfortable temperatures.
Summer thunderstorms can be dramatic but pass quickly. Carry an umbrella from May through August. Winter precipitation is often snow, creating a magical atmosphere.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.