Czech Republic Cesky Krumlov Weather in September — Climate Guide
September in Cesky Krumlov is high
Cesky Krumlov Weather in September — Quick Answer
As of 2026- Avg temp
- 19° / 9°
- Rainfall
- 65mm · 12 days
- Crowds
- Busy
As of 2026, Cesky Krumlov in September averages a high of 19°C and low of 9°C with 65mm of rain over about 12 days. Early autumn — about 19°C/9°C, mild days and cooler evenings, with rainfall easing. T-shirts plus a light jacket or sweater for evenings. Comfortable shoes for cobblestones.
September is high for Cesky Krumlov.
September is widely considered the best month to visit — about 19°C/9°C, comfortable for walking, with summer crowds thinning after the school holidays and prices softening to shoulder-season levels.
All the main sights are still open — the castle interiors and Baroque Theatre run through October, the Egon Schiele Art Centrum year-round, and Vltava rafting continues. Early-autumn colour starts to tint the hillsides above the Vltava bend, the scene many photographers prize most.
Travel score
Cesky Krumlov September Weather Stats
Avg High
19°C
Avg Low
9°C
Rainy Days
12
65mm total
Sunshine
5h
Daily avg
Humidity
75%
comfortable
UV Index
4
Moderate
Wind
8 km/h
Gusts 18
Crowds
Busy
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
14 μg/m³
PM10
24 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
19°C
Nighttime
9°C
Humidity and wind affect how the actual temperature feels.
Wind
8 km/h
Max gust 18 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Best balance — open sights, fewer crowds
- Mild, pleasant walking weather
- Easing prices vs peak summer
- Early autumn colour begins
Cons
- Weekends still draw day-trippers
- Cooler evenings
- Rafting season ending soon
- River cooling for rafting
September Events & Festivals
- Shoulder season begins — crowds and prices ease
- St. Wenceslas Day (Sep 28) — Czech public holiday
- Rafting season winds down (usually ends October)
- Early autumn colour begins
Cesky Krumlov in September — Full Picture
September is widely considered the best month to visit — about 19°C/9°C, comfortable for walking, with summer crowds thinning after the school holidays and prices softening to shoulder-season levels.
All the main sights are still open — the castle interiors and Baroque Theatre run through October, the Egon Schiele Art Centrum year-round, and Vltava rafting continues. Early-autumn colour starts to tint the hillsides above the Vltava bend, the scene many photographers prize most.
Midday weekends can still draw day-trippers, but weekdays feel noticeably calmer than July-August. Rainfall drops to around 65mm, and the light is softer and warmer — excellent for photography.
September hits the rare combination of open sights, good weather, thinning crowds, and easing prices. For most travelers it is the smartest time to come, especially mid-to-late month on weekdays.
What to Wear & What to Pack
Early autumn — about 19°C/9°C, mild days and cooler evenings, with rainfall easing. T-shirts plus a light jacket or sweater for evenings. Comfortable shoes for cobblestones.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
14°C
3.3°C
12.7/mo
Summer (Jun·Jul·Aug)
23°C
12.3°C
15.3/mo
Autumn (Sep·Oct·Nov)
Current13°C
5°C
11.7/mo
Winter (Dec·Jan·Feb)
3°C
-3.3°C
12.3/mo
Cesky Krumlov Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 2° | -4° | 13d·35mm | 2h | 84% | 1 | Quiet | Low season | |
| 4° | -3° | 11d·30mm | 3h | 80% | 2 | Quiet | Low season | |
| 9° | -1° | 12d·35mm | 4h | 74% | 3 | Quiet | Low season | |
| 14° | 3° | 12d·45mm | 5h | 68% | 4 | Moderate | Shoulder | |
| May (Best) | 19° | 8° | 14d·75mm | 6h | 68% | 5 | Busy | Peak |
| June (Best) | 22° | 11° | 15d·95mm | 6h | 70% | 6 | Very busy | Peak |
| 24° | 13° | 16d·120mm | 7h | 70% | 6 | Very busy | Peak | |
| 23° | 13° | 15d·105mm | 7h | 72% | 6 | Very busy | Peak | |
| September (Best) | 19° | 9° | 12d·65mm | 5h | 75% | 4 | Busy | Shoulder |
| 13° | 5° | 11d·50mm | 4h | 80% | 2 | Moderate | Shoulder | |
| 7° | 1° | 12d·45mm | 2h | 85% | 1 | Quiet | Low season | |
| 3° | -3° | 13d·40mm | 1h | 86% | 1 | Moderate | Shoulder |
View Other Months
Cesky Krumlov September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Cesky Krumlov?
Cesky Krumlov in September is high. Tourist crowds are busy and flight/hotel prices are shoulder.
What's the average temperature in Cesky Krumlov in September?
Cesky Krumlov September averages a high of 19°C and a low of 9°C.
Does it rain much in Cesky Krumlov in September?
Cesky Krumlov September averages 65mm of rainfall over about 12 rainy days.
What should I wear in Cesky Krumlov in September?
Early autumn — about 19°C/9°C, mild days and cooler evenings, with rainfall easing. T-shirts plus a light jacket or sweater for evenings. Comfortable shoes for cobblestones.
What time are sunrise and sunset in Cesky Krumlov in September?
Cesky Krumlov September sunrise is 06:35 and sunset is 19:05, with 12h 30min of daylight.
What's the air quality like in Cesky Krumlov in September?
Cesky Krumlov September air quality (AQI) averages 38, rated Good. PM2.5 averages 14μg/m³.
What activities are recommended in Cesky Krumlov in September?
In September, Cesky Krumlov is great for Castle interior and theatre tours, Vltava rafting (season ending), Autumn photography over the river bend.
Is September peak season in Cesky Krumlov?
Cesky Krumlov September crowds are busy and prices are shoulder. Advance reservations are strongly recommended.
Best Months to Visit Cesky Krumlov
View Other Months
Planning a September trip to Cesky Krumlov?
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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.