September in Prague averages highs of 21 °C (70 °F) and lows of 11 °C (52 °F), with about 6 rainy days and 12 h 32 min of daylight.
September weather in Prague at a glance
average high to low each dot ≈ 3 rainy days
Is September a good time to visit Prague?
Good time to go: comfortably warm and some rain. September is usually shoulder season in Prague: fewer crowds than peak months, with prices often a little lower.
Our rule: a month scores 2 points for comfortable average highs of 18–28 °C (1 point for 14–18 or 28–32 °C) and 2 points for 5 or fewer rainy days (1 point for 6–10). Average highs above 35 °C or below 8 °C make it a tough month whatever the rain. A rainy day here means 2 mm of rain or more. 4 points = great, 3 = good, 2 = mixed, 0–1 = tough.
Holidays and events in September 2026
- Mon 28 Sep: St. Wenceslas Day (Den české státnosti) public holiday
Banks and many shops close on public holidays, and museums may change their hours, so check before you go.
Things to do in Prague in September
September's weather suits a mix of outdoor sights and museums, so the open-air ones come first.
- Charles Bridge — at sunrise, before the crowds outdoors
- Old Town Square and the Astronomical Clock — on the hour outdoors
- Letná Park and beer garden — best view of the bridges outdoors
- Vyšehrad — quiet fortress on the river outdoors
- Prague Castle and St Vitus Cathedral — half a day indoors
- Jewish Quarter (Josefov) — synagogues and the old cemetery indoors
Where to stay: Old Town or Malá Strana for sights; Vinohrady or Karlín for value and cafés.
What to pack for Prague in September
- Light layers for the day and a jumper for evenings, which cool to 11 °C (52 °F).
- Comfortable walking shoes.
What a day in Prague costs
| Budget traveller | Mid-range | |
|---|---|---|
| Typical total per person, per day | €45–100 | €120–250 |
Excluding flights. September is usually shoulder season in Prague: fewer crowds than peak months, with prices often a little lower.
September in nearby cities
| City | High / low | Rainy days | Verdict |
|---|---|---|---|
| Vienna | 22° / 13° | 7 | Good time to go |
| Berlin | 21° / 12° | 6 | Good time to go |
| Munich | 19° / 10° | 10 | Good time to go |
Plan your Prague trip
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FAQ
Is September a good time to visit Prague?
By the numbers, September is a good time to go: comfortably warm and some rain, with average highs of 21 °C (70 °F) and about 6 rainy days. September is usually shoulder season in Prague: fewer crowds than peak months, with prices often a little lower. The best months for weather are May, June, July, August, September.
How warm is Prague in September?
Average highs are 21 °C (70 °F) and lows 11 °C (52 °F) (2015–2024 averages).
Does it rain a lot in Prague in September?
Expect about 6 days with 2 mm of rain or more, about 56 mm in total. It is the driest month of the year in Prague.
Sources: climate averages from Open-Meteo historical weather (ERA5 reanalysis, 2015–2024); sea temperatures from the Open-Meteo marine API (2023–2024); public holidays from Nager.Date. Daylight is calculated for the 15th of the month. Averages are a guide, not a forecast. Costs are typical ranges per person per day, excluding flights.