Czech Republic Prague Weather in September — Climate Guide
September in Prague is Excellent
September is Excellent for Prague.
September is early autumn — arguably Prague's best month. Daytime 20°C, nighttime 10°C, low rainfall + good visibility. Hotel rates 20-30% below summer peak. Crowds thin.
Dvořák Festival (entire September) celebrates Antonín Dvořák (composer of New World Symphony) — concerts at Rudolfinum + Municipal House by major international orchestras. Tickets €30-100; book 2-3 weeks ahead.
Travel score
Prague September Weather Stats
Avg High
20°C
Avg Low
10°C
Rainy Days
10
41mm total
Sunshine
5.5h
Daily avg
Humidity
73%
Comfortable
UV Index
4
Moderate
Wind
10 km/h
Gusts 24
Sea Temp
16°C
Cool
Crowds
Moderate
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
13 μg/m³
PM10
24 μg/m³
Status
Good
Feels-Like Temperature & Wind
Feels like
Daytime
20°C
Nighttime
9°C
Humidity and wind affect how the actual temperature feels.
Wind
10 km/h
Max gust 24 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Best value-to-weather of the year
- Dvořák Festival classical music
- Crowds thinning
Cons
- Days shortening (sunset 19:00 by end of month)
- Variable autumn weather
- Tourist sites still busy weekends
September Events & Festivals
- Dvořák Festival (Czech classical music, all September)
- Hotel rates dropping from peak
- Crowds thinning as schools resume
Prague in September — Full Picture
September is early autumn — arguably Prague's best month. Daytime 20°C, nighttime 10°C, low rainfall + good visibility. Hotel rates 20-30% below summer peak. Crowds thin.
Dvořák Festival (entire September) celebrates Antonín Dvořák (composer of New World Symphony) — concerts at Rudolfinum + Municipal House by major international orchestras. Tickets €30-100; book 2-3 weeks ahead.
Vineyard tours in Bohemia (south of Prague, 1-2 hour day trips) hit peak for harvest season. Karlštejn Castle + Mělník combo is the canonical autumn day trip.
What to Wear & What to Pack
Light jacket + sweater. Long pants. Layered approach for 10°C swings. Sunglasses still useful.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
13.7°C
3.3°C
11/mo
Summer (Jun·Jul·Aug)
23.3°C
12.3°C
12.3/mo
Autumn (Sep·Oct·Nov)
Current13°C
5.3°C
10.3/mo
Winter (Dec·Jan·Feb)
2°C
-3°C
12/mo
Prague Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 1° | -4° | 13d·23mm | 1.7h | 82% | 1 | Quiet | Low season | |
| 3° | -3° | 11d·22mm | 2.8h | 78% | 1 | Quiet | Low season | |
| 8° | -1° | 11d·30mm | 4.4h | 73% | 2 | Moderate | Shoulder | |
| April (Best) | 14° | 3° | 10d·27mm | 5.7h | 67% | 4 | Busy | Peak |
| May (Best) | 19° | 8° | 12d·71mm | 7.1h | 65% | 5 | Busy | Peak |
| June (Best) | 22° | 11° | 13d·75mm | 7.5h | 67% | 6 | Very busy | Peak |
| July (Best) | 24° | 13° | 13d·75mm | 7.7h | 67% | 6 | Very busy | Peak |
| August (Best) | 24° | 13° | 11d·71mm | 7.4h | 69% | 5 | Very busy | Peak |
| September (Best) | 20° | 10° | 10d·41mm | 5.5h | 73% | 4 | Moderate | Shoulder |
| 13° | 5° | 9d·32mm | 3.8h | 79% | 2 | Moderate | Shoulder | |
| 6° | 1° | 12d·32mm | 1.7h | 84% | 1 | Quiet | Low season | |
| 2° | -2° | 12d·25mm | 1.6h | 84% | 1 | Busy | Peak |
View Other Months
Prague September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Prague?
Prague in September is Excellent. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Prague in September?
Prague September averages a high of 20°C and a low of 10°C.
Does it rain much in Prague in September?
Prague September averages 41mm of rainfall over about 10 rainy days.
What should I wear in Prague in September?
Light jacket + sweater. Long pants. Layered approach for 10°C swings. Sunglasses still useful.
What time are sunrise and sunset in Prague in September?
Prague September sunrise is 06:36 and sunset is 19:17, with 12h 41m of daylight.
What's the air quality like in Prague in September?
Prague September air quality (AQI) averages 38, rated Good. PM2.5 averages 13μg/m³.
What activities are recommended in Prague in September?
In September, Prague is great for Dvořák Festival concerts, Petřín Hill autumn color, Karlštejn Castle day trip.
Is September peak season in Prague?
Prague September crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Prague
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.