Bratislava records about 527mm of rain across roughly 88 wet days a year, which is a 24% chance on an average day. June is the wettest month at 62mm (12% of the annual total) and March the driest at 28mm. Local rain type: thunderstorms. Bratislava gets moderate continental rain with summer thunderstorms. The compact Old Town provides quick shelter — nothing is far away.
Chance of rain on an average day: 24%
Rainfall climatology for Bratislava. 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 | 527mm |
| Rain days per year | 88 |
| Odds on an average day | 24% |
| Wettest month | June — 62mm over 11 days |
| Driest month | March — 28mm over 5 days |
| Rain type | thunderstorms |
| Best dry window | September and October offer dry, pleasant "golden autumn" weather. |
| Worst rain window | May through July brings the most rainfall as afternoon thunderstorms. |
June delivers 121% more rain than March (62mm vs 28mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 12% of the annual total, so rain in Bratislava is spread through the year — there is no season you can rely on being dry.
Bratislava rain arrives in short, heavy bursts — shelter and timing matter more than gear.
Rain falls on about 11 days in June against 5 in March — 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 | 32mm | 6 | 20% | 3°C |
| February | 30mm | 5 | 17% | 3°C |
| March | 28mm | 5 | 17% | 7°C |
| April | 36mm | 6 | 20% | 12°C |
| May | 52mm | 9 | 30% | 18°C |
| June | 62mm | 11 | 37% | 23°C |
| July | 52mm | 9 | 30% | 27°C |
| August | 48mm | 8 | 27% | 27°C |
| September | 45mm | 8 | 27% | 23°C |
| October | 38mm | 7 | 23% | 18°C |
| November | 45mm | 8 | 27% | 12°C |
| December | 38mm | 7 | 23% | 7°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Bratislava 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.
Bratislava records rain on roughly 88 days a year — about a 24% chance on any given day — totalling around 527mm.
June, with about 62mm over 11 rain days. That is 12% of the entire year's rainfall in a single month.
March is the driest month at 28mm across roughly 5 days. September and October offer dry, pleasant "golden autumn" weather.
Bratislava gets moderate continental rain with summer thunderstorms. The compact Old Town provides quick shelter — nothing is far away.
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.