Czechia · Climate data from ČHMÚ
Prague dresses for a 11°C–27°C / 52°F–81°F window across the months we cover. Prague reads bohemian-classical: fine-knit sweaters, packable trenches, dark straight-leg jeans or wool-blend trousers, low-heel leather boots or oxfords for Old Town's 14th-century cobbles (much of the network laid by Charles IV in 1357). Klára Nademlýnská (Prague-based contemporary, since 1996) and Liběna Rochová carry the local design vocabulary; Lobmeyr glass (since 1823) and Moser crystal (since 1857) anchor the heritage register. Czech beer-garden culture (Letná, Riegrovy sady, Stromovka) reads smart-casual outdoor. Prague Spring music festival opens May 12; Christopher Street Day arrives late July.
Across the 4 months we cover: morning lows from 11°C / 52°F (May) to afternoon highs of 27°C / 81°F (July).
What to wear in Prague in May 2026: ČHMÚ data (21°C / 70°F, 11°C / 52°F mornings, 9 rain days) — Prague Spring music festival, Old Town cobbles, the bohemian-glass capsule.
What to wear in Prague in June 2026: ČHMÚ data (24°C / 75°F, 15°C / 59°F mornings, 12 rain days) — Prague Spring finale, beer-garden season, the bohemian-classical capsule.
What to wear in Prague in July 2026: ČHMÚ data (27°C / 81°F, 17°C / 63°F mornings, 11 rain days) — peak summer, beer-garden volume, the bohemian-classical capsule.
What to wear in Prague in August 2026: ČHMÚ data (26°C / 79°F, 16°C / 61°F mornings, 10 rain days) — late summer, beer-garden plateau, the bohemian-classical capsule.
The neighborhood you sleep in affects what reads as appropriate more than the calendar does. Prague's style scene anchors on the districts below — each leaf page calls out the local register (smart-casual, undone, technical, party) so the capsule maps to the streets you'll actually walk on.
Every leaf page on this hub is built from four data layers: climate normals from ČHMÚ; named-authority etiquette and style references (Vogue, Condé Nast Traveler, Business of Fashion, the relevant local press); resident write-ups and traveler-forum reports for the failure modes tourists get wrong; and the editorial avatar pool that visualises each capsule on a person rather than a moodboard. Every DO names a reason. Every DON'T names a failure mode. We retest before each seasonal refresh — the editorial-modified date at the bottom of each leaf is the receipt.
Climate numbers come from ČHMÚ — the national meteorological service for Czechia. Daily highs and lows, rain days, and daylight hours are 1991-2020 normals (the international standard, refreshed every decade). Capsule pieces and what-to-avoid notes are stress-tested against Prague resident write-ups, named-stylist sources where the city has a documented uniform (Vogue Paris under Emmanuelle Alt for Paris, Vogue Japan and i-D Tokyo coverage for Tokyo, NYMag's The Cut for New York), and the failure modes locals actually flag in city forums and traveler reports.
Because the morning-low to afternoon-high swing inside one Prague month already changes the silhouette — and the swing between months is much bigger than that. May mornings start at 11°C / 52°F; July afternoons hit 27°C / 81°F. A single packing list that tries to span both ends up wrong at both. Each month here is a different capsule, calibrated to the climate band that actually shows up on the ground.
4 so far: May, June, July, August. We ship climate-and-event-distinct months only — adjacent months that share more than 60% of the same capsule pieces don't get separate pages, because near-identical leaves erode the credibility of every other page on the site. The full coverage plan is in our internal CLAUDE.md (the editorial brief governs every page that ships).
ČHMÚ 1991-2020 normals are the version cited on every leaf — the international meteorological standard, updated by every national service every decade. We restate the numbers as raw averages on the leaf pages ("27°C / 81°F afternoons") rather than the year range, so the figures don't read as stale. The next normals refresh covers 2001-2030 and lands in 2031 — we'll bump every page when it does.
Editorial rule, enforced in CI: every DO line names a specific reason ("merino sinks under a trench so a damp morning doesn't show through your knit"); every DON'T names a specific failure mode ("suede stains the first time light drizzle catches it"). We ban "timeless," "elevate your style," "must-have," and "effortless" — they're the giveaway phrases of generic AI fashion writing. If a sentence could open any city's guide, it gets cut. Prague's guide reads like Prague, not like a packing-list aggregator.