Czechia
Prague in September: weather & travel advice
This month's data profile
Strong month under the current formula
Prague in September is climatically well suited to city breaks and active holidays and hiking. The average daily high is around 20 °C. With about 10 rainy days it is moderate.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
77/100 · #2
Warmth
#4
Dryness
#5
Sun
#6
Published best categories: Overall, City break, Active, Family
Prague · SeptemberPhoto: Lucas Garron · CC0Climate facts
- Average high
- 20 °C
- Average low
- 9 °C
- Rainy days (est.)
- 10 rainy days (est.)
- Sun (est.)
- 4 h/day
- Humidity
- 72 %
For your trip planning
September: drier than August, much milder than October
September is one of the best months for a city break in Prague in our series. It is cooler than August and drier too, while October drops clearly further in average highs and lows and offers fewer estimated sun hours. Evenings in the September averages are cool, so pack a jacket for walks after sunset.
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| August | 25 | 14 | 12 | 76 | 5.6 | 64 | 2.2 | 79 |
| September (selected) | 20 | 9 | 10 | 54 | 4.0 | 72 | 2.4 | 77 |
| October | 14 | 5 | 10 | 43 | 2.3 | 81 | 2.7 | 54 |
How do the previous and next months compare?
Baseline: September (77/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| August | +2 | +5 °C | +4.4 °C | +1.7 | +22 mm | +1.6 h | -7.3 % | -0.2 m/s |
| October | -23 | -6.1 °C | -4.5 °C | -0.4 | -10.5 mm | -1.7 h | +9.6 % | +0.3 m/s |
All twelve months in context
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Where to stay in Prague
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Useful next decisions
Frequently asked questions
How warm is Prague in September?
The average daily high is around 20 °C, with an average daily low of about 9 °C.
Does it rain a lot in Prague in September?
The curated estimate is about 10 rainy days per month, not a directly measured long-term average. Total precipitation averages around 54 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Prague?
By the climate score, June, July, August and September are the strongest months for Prague. September is one of them.