Ostrava, in the northeastern Czech Republic close to the Polish border, receives around 700 mm (about 28 inches) of rain a year, more than Prague or Brno, reflecting its position closer to the Beskid mountains where terrain helps intensify rainfall. The region has experienced significant flooding in the past when heavy rain combined with the mountainous watershed sent rivers over their banks, including notable events in 1997 that affected much of the wider region. Faster, more localized summer thunderstorms remain a separate, more immediate hazard. Because the mountains create such distinct local weather patterns, radar offers a clearer picture than general regional forecasts. The Czech Hydrometeorological Institute operates the national radar network.
Rain in Ostrava by month
Ostrava gets about 704 mm (27.7 in) of rain in an average year. The wettest month is June, with 88 mm (3.4 in), and the driest is February, with 38 mm (1.5 in).
| Month | Average rain | Average temperature |
|---|---|---|
| January | 41 mm (1.6 in) | -3.3 °C (26 °F) |
| February | 38 mm (1.5 in) | -1.5 °C (29 °F) |
| March | 42 mm (1.7 in) | 2.8 °C (37 °F) |
| April | 46 mm (1.8 in) | 8.7 °C (48 °F) |
| May | 84 mm (3.3 in) | 13.7 °C (57 °F) |
| June | 88 mm (3.4 in) | 17.8 °C (64 °F) |
| July | 87 mm (3.4 in) | 20.1 °C (68 °F) |
| August | 73 mm (2.9 in) | 19.7 °C (67 °F) |
| September | 72 mm (2.8 in) | 14.5 °C (58 °F) |
| October | 53 mm (2.1 in) | 8.7 °C (48 °F) |
| November | 41 mm (1.6 in) | 3.9 °C (39 °F) |
| December | 39 mm (1.5 in) | -1.4 °C (29 °F) |
Long-term monthly averages from NASA POWER (MERRA-2 satellite reanalysis). They describe the wider area around Ostrava and can differ slightly from local weather-station records.
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Frequently Asked Questions
Is it raining in Ostrava right now?
The map above shows recent radar observations over Ostrava, Moravian-Silesian Region where coverage is available. Use the map legend and timestamp to interpret the imagery. A blank map over Ostrava can mean no detected precipitation, missing coverage, delayed data, or rain too light for radar to detect.
How often does the Ostrava rain radar update?
Updates depend on the radar provider and local network. Check the timestamp on the map for the latest available frame, and press play to compare recent observations. Radar imagery can lag conditions on the ground.
Can I see if a storm is heading toward Ostrava?
Press play to compare recent radar frames over Moravian-Silesian Region and see the direction of detected rain. This can help you assess approaching showers near Ostrava, but storms can grow or change direction; check your local weather service for forecasts and warnings.
Is this Ostrava rain radar free to use?
Yes, completely free – no account, app download, or sign-up required. It works in any browser on desktop and mobile.