Prague weather by season: what to pack and when to come

Prague's weather has a reputation for being grey, and the reputation is half fair. Temperature records have been kept at the Klementinum since 1775, and they describe a place where the seasons are properly seasons: summers can be hot, winters cold and the shoulder months unpredictable.

This is the shape of the year and what to pack. I haven't quoted monthly averages, because the numbers belong to the national weather service and shift over time; for those, go to the Czech Hydrometeorological Institute (ČHMÚ).

The year at a glance

Winter

Cold, with short days: in December the sun sets at around four in the afternoon, so plan sightseeing accordingly. Snow comes and goes, with some winters heavy and others nearly bare. Frost and ice are a bigger problem for walkers than snow, especially on cobbles. The reward is atmosphere. Read Prague's weather in winter, the guide to Christmas markets and mulled wine and hot drinks.

Spring

Gradual. March can still feel like winter, April is mixed and May is often lovely. Parks come into leaf and terraces open. Take layers and a waterproof, because the weather can turn within a day. See Prague in spring.

Summer

Warm, with hot spells that feel intense in the stone-heavy centre. Thunderstorms are common and usually short. Around midsummer the sun sets at about nine in the evening. Heat is the thing to plan for: see big sights early, carry water, find shade. Our summer guide covers terraces and the river, and swimming in Prague tells you where to cool off.

Autumn

September is often among the nicest months: warm days, cooler evenings, harvest festivals. October brings colour, and by November the city turns damp and grey. Days shorten fast. See Prague in autumn, and if you're here at harvest time try burčák, the young wine or go mushroom picking.

When to visit

1. Fewest crowds, decent weather: late April to May, and September to early October.
2. A summer holiday: June to August, accepting heat and crowds.
3. Atmosphere in the cold: December, with a warm coat and patience.
4. A cheaper trip: the quieter winter weeks outside holidays.

Our three-day itinerary works in any season with small changes, and it's wise to keep a wet-weather plan: museums, cafés and covered passages are plenty. Forecasts beyond a few days are a guess. ČHMÚ publishes forecasts and warnings in Czech and English, and the official site is the authority on warnings for heat, storms and ice.

Why it behaves as it does

Prague lies in a basin on the Vltava, roughly 180 to 400 metres above sea level depending on the district, far from the sea, so seasonal swings are larger than in coastal Europe. In winter cold air can settle in the valley and sit there, producing fog and a flat grey sky for days. These temperature inversions are why the city can feel grey even when it isn't very cold. Rain falls all year: short, heavy thunderstorms in summer and longer drizzle in autumn. Wind can be sharp on the bridges.

The Klementinum record shows a warming trend over the centuries, and recent summers have brought more frequent heatwaves. For data, use ČHMÚ's climate summaries.

A packing list for any season

1. A waterproof layer that packs small.
2. Comfortable shoes with grip. Cobbles are treacherous when wet or icy.
3. One warm layer, whatever the month.
4. Hat and gloves from late October to March.
5. Sun protection from May to September; the stone centre reflects heat.
6. A refillable bottle. Tap water in Prague is drinkable.

The seasons set the rhythm of Czech life. Beer gardens open when it warms and the city moves outdoors; see beer gardens in Prague. If you're planning around the weather for the Old Town, remember the Orloj performs every hour whatever the sky is doing.

Frequently asked questions

What is the best time to visit Prague?

Late spring and early autumn are popular for mild weather and fewer crowds. Summer is warmer and busier, and winter is cold but atmospheric.

Does it snow in Prague?

Sometimes. Amounts vary from year to year, and frost and ice are more common than deep snow.

How hot does it get in summer?

Warm to hot, with occasional heatwaves. Check ČHMÚ for forecasts and warnings.

How long are the days in winter?

Short. In December the sun sets at around four in the afternoon.