How humid is the Czech Republic in 2026?

In summer, warm spells with roughly mid-range humidity can still feel sticky in dense Prague or Brno streets, especially after thunderstorms when moisture hangs in the air: Summer heat and Rain. South Moravia heat can feel more continental and draining than tropical, yet riverside evenings still hold moisture.

Winter often feels clammy even when the thermometer sits only modestly below freezing. Prague’s basin and Vltava valley trap cold, damp air under inversion lids, creating fog and a raw humidity that coats stone streets: Living in Prague and Winter cold. Climbing Petřín or leaving for Krkonoše ridges can put you above the fog into clearer air on the same morning: Altitude climate.

Prefer flats with ventilation and a drying plan; cool unheated corners grow mould when wet coats never dry. Dehumidifiers help more than another decorative heater in damp months. Heating bills already matter: Utilities, internet, and transport.

Brno lowlands share four-season humidity swings without Prague’s deepest tourist-basin fog theatre: Living in Brno. If gray damp winters are your veto, lowland “mild” still needs coats and dry storage, not only a thinner duvet: Best climate.