First Below-Freezing Temperatures Hit Prague at the Turn of September

Michal B.
September 29, 2025
3 min read

Autumn has finally shown its colder face in Prague. The city is waking up to its first frosty mornings of the season, with temperatures expected to dip below zero at the turn of September and October. It’s the moment when the golden leaves, shorter days, and chilly air all remind us that fall has truly arrived.

A Chilly Week Ahead

Meteorologists are warning that the coming days will be colder than usual for the season. Cold air flowing in from the northeast will bring early morning frosts, with some spots even seeing the thermometer slip below freezing. Days will stay on the cooler side too, hovering around 10 to 12 °C midweek, before a bit of warmth returns on Sunday.

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Here’s what the week looks like in Prague:

  • Monday: Partly sunny with fog in the morning. Highs 15 °C.
  • Tuesday: Cool and partly cloudy. Morning lows near freezing, highs 14 °C.
  • Wednesday–Saturday: The chilliest stretch, with frosty mornings down to -1 °C and daytime temperatures around 12 °C.
  • Sunday: A touch of relief — cloudy skies, possible showers, but warmer with highs up to 14 °C.

What This Means for Visitors

If you are visiting Prague this week, pack warmly. A light jacket won’t be enough for those morning walks across Charles Bridge or your first tram ride of the day. Scarves, gloves, and layers will make exploring far more comfortable. Drivers should also prepare for frosty windscreens in the mornings, while gardeners in and around the city will want to protect more delicate plants.

The good news? Cold, clear mornings can be magical in Prague. Imagine watching the sun rise over Old Town rooftops as mist lingers on the Vltava. It’s the kind of atmosphere that makes autumn in the Czech capital unforgettable.

The first sub-zero nights mark a real turning point: summer is gone, autumn is here, and winter is just around the corner. While the chill may be sharp, it’s also part of the city’s seasonal charm. So bundle up, embrace the frosty mornings, and enjoy Prague as it shifts into its golden autumn mood.

Michal B.
PragueGO, Writer and Guide

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Michal B.
Michal has been born in Prague and living there for more than 30 years. His favorite neighborhoods are Brevnov and Hradcany. Even though he knows Prague a lot, he loves just getting lost there and imagine he's a tourist.