Czech Republic in August: Weather, Crowds & What to Expect
Climate Map for August
Average temperature across Czech Republic in August.
City Weather in August
| City | High | Low | Rain | UV | Feels |
|---|---|---|---|---|---|
| Prague | 25° | 14° | 65 mm | high | Mild |
| Brno | 25° | 14° | 52 mm | high | Mild |
| Ostrava | 24° | 12° | 84 mm | high | Mild |
| Plzeň | 24° | 12° | 73 mm | high | Mild |
| Liberec | 23° | 11° | 84 mm | high | Cool |
| Olomouc | 24° | 12° | 71 mm | high | Mild |
| České Budějovice | 25° | 12° | 75 mm | high | Mild |
High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.
Prague & Central Bohemia
Late summer warmth lingers into August with similar temperatures to July and occasional sultry nights. August can also be the stormiest month for Prague; sudden heavy downpours are common, occasionally causing short-term surface flooding in streets and tram delays. Cultural life is lively with summer film and music festivals, but expect busy attractions-book restaurants and concert tickets in advance. A light foldable raincoat and breathable clothes will keep you comfortable.
South Bohemia & Šumava
August continues summer warmth and is a busy month for visitors to Český Krumlov and the Šumava’s bathing lakes. High humidity can make lowland days feel sultry, and the risk of late-afternoon thunderstorms remains; watch forecasts if planning long ridge hikes. Harvest chatter begins in nearby agricultural villages, and lakeside beaches are lively. Early reservations are wise and pack swimwear plus a lightweight storm jacket.
Northern Bohemia & Krkonoše (Mountains)
August maintains warm valley air but mountain summits remain cooler and breezy-perfect for ridge treks if you avoid midday storms. The season still supports long daylight for extended climbs, but keep an eye on mountain forecasts; storm cells build quickly in the heat and can close lifts. This is an excellent month for botanical interest in alpine meadows and for summit photography in softer light; pack layers and a rain shell.
Bohemian-Moravian Highlands (Vysočina) & South Bohemian Uplands
August continues warm weather and is good for late-summer hikes and cycling on quieter secondary roads, though late-month thunder showers increase slightly. Harvest activity starts in farm areas, creating lively rural markets and fairs. Plan accommodations in advance for weekend stays and bring sun protection for open plateau trails; evenings can cool noticeably, so a light jacket is handy.
South Moravia (Brno, Pálava, Lednice)
August sustains summer heat and is a busy month for outdoor wine events and bathing at regional reservoirs; evenings remain pleasantly warm. Storm cells remain the main interrupter-prepare for sudden downpours during long hikes or vineyard bike rides. Consider early-morning starts for longer outdoor excursions and reserve cellar tours in advance as tourist numbers climb on holiday weekends.
Moravian-Silesian Beskids & Jeseníky (Eastern Mountains)
August sustains warm, pleasant days and is an excellent month for ridge walks and alpine meadows in full bloom; mornings are often clear and cool. The risk of thunderstorms remains, especially late in the month, and long hikes should be planned around weather windows. Expect lively guesthouse life in mountain towns and pack sun protection plus a lightweight rain shell for summer squalls.