Best time to visit Prague: April–May & September–October.
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April–May & September–October is the best window to visit Prague. Mild, pleasant weather for walking the old town without peak crowds.
July–August is the stretch to avoid if possible. The hottest and most crowded stretch of the year.
Not necessarily — weather and crowd timing don't always match the cheapest airfare windows. Check our Best Time to Book Flights tool separately for pricing.
Usually yes — the weeks just before or after Prague's best window often have nearly as good weather with noticeably fewer crowds and lower prices.