April to June and September to October. Month by month below, with the weather, what's on and what it costs to fly there from your city.
May and September come up most, with early October close behind. April and June also appear, and summer is the busy season.
6 of the 10 travel guides we read name these months.
Average high and low in Prague
JanuaryChecking fares…Prague's quietest month, cold and grey, with daylight ending by 4:30 PM.Highs around 1 to 2 degrees, lows around minus 4.Ski season runs January to April; Špindlerův Mlýn is suggested.Masopust in Prague
FebruaryChecking fares…Similar to January with slightly more daylight; snow possible but not heavy.Masopust, the Czech carnival, brings parades, masks and food before Lent.Matejska Funfair
MarchChecking fares…Prague Castle's gardens reopen in late March.Rainy spells and cold snaps are both common.Spring reaches the country by mid-March, though freezes can last into March.
Best timeAprilChecking fares…Cherry blossoms and magnolias bloom across Prague.Easter markets run on Old Town Square; Easter week is the busiest.The Burning of the Witches bonfires happen on April 30.
Best timeMayChecking fares…Called the best weather month in Prague, with long daylight.Prague Spring music festival starts May 12 and runs into early June.Czech Beer Festival is in the second half of May in Letná Park.
Best timeJuneChecking fares…Český Krumlov holds its Five-Petalled Rose Renaissance festival.Days of 20 to 26°C stretching past 9 PM.The Microbrewery Festival takes place in June.
JulyChecking fares…Karlovy Vary Film Festival is in early July, Colours of Ostrava mid-July.Bohemia Jazz Fest runs in July.Around 18 wet days in July in Prague.
AugustChecking fares…August is Prague's busiest month for overnight stays.Prague Pride takes place in August.The International Festival of New Circus and Theater runs mid-August.Letní Letná
Best timeSeptemberChecking fares…One forum poster recommends September every time, as the summer peak has passed.Wine harvest festivals run in Mikulov, Znojmo and Mělník.The St. Wenceslas Festival is held in late September.
Best timeOctoberChecking fares…First half of October is one traveler's favorite time in central Europe.Průhonice Park turns red and gold in October.Many EU schools have a long holiday the first two weeks of October.Prague Sounds (Strings of Autumn)
NovemberChecking fares…Late fall and winter are Prague's low season.Christmas markets open in the last days of November.Prague Christmas Markets
DecemberChecking fares…Christmas markets draw crowds from mid-December through early January.A 24-metre Christmas tree stands in Old Town Square.December is named good for Christmas markets and snow.Weather: Prague averages from Czech Hydrometeorological Institute (long-term averages), as listed in its climate table on Wikipedia.
Live fares from your airport. Watch them and we alert you when they drop.
Festivals and seasons through the year
Cancún
The Grand Canyon
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Prague
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Montreal
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Dublin
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South America
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Phoenix
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Medellín
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California
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Salt Lake City
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Upper Peninsula
Sonoma
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Da Nang
Cotswolds
Arkansas
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Glacier National Park
Barcelona
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Santiago, Chile
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Central America
Minneapolis
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Canyonlands National Park
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Capitol Reef National Park