Cesky Krumlov weather in September

In September, Cesky Krumlov sees average daytime highs of 17°C and overnight lows near 9°C, with 75 mm of rain across 11.5 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 15°C by the end. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Cesky Krumlov's 5th-clearest and 9th-windiest month. For the whole year in context, see Cesky Krumlov's year-round climate.

Daytime high: 17°; 4th warmest
Overnight low: 9°; 9th coldest
Rainfall: 75 mm; 11.5 wet days
Daylight: 12 h 24 min; 5:46 AM – 6:08 PM
Cloud cover: 64%; 5th clearest
Wind: 9 km/h; 9th windiest
Solar energy: 3.29 kWh/m²
Travel score: 5.1; out of 10

Cesky Krumlov is town in the Czech Republic.

Density: 577/km²; people per km²
Founded: 1253

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← August Cesky Krumlov year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 15°C by the end.

A typical September day in Cesky Krumlov reaches about 17°C in the afternoon and slips back to 9°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 23°C. Set against its neighbours, September runs about 5°C cooler than August and about 5°C warmer than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	19	19	19	19	19	18	18	18	18	18	18	17	17	17	17	17	17	16	16	16	16	16	16	16	15	15	15	15	15	15
Avg low (°C)	11	11	10	10	10	10	10	10	10	9	9	9	9	9	9	9	8	8	8	8	8	8	8	7	7	7	7	7	7	7

	Avg high (°C)	Avg low (°C)
1	19	11
2	19	11
3	19	10
4	19	10
5	19	10
6	18	10
7	18	10
8	18	10
9	18	10
10	18	9
11	18	9
12	17	9
13	17	9
14	17	9
15	17	9
16	17	9
17	17	8
18	16	8
19	16	8
20	16	8
21	16	8
22	16	8
23	16	8
24	16	7
25	15	7
26	15	7
27	15	7
28	15	7
29	15	7
30	15	7

How September really feels in Cesky Krumlov

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Cesky Krumlov weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	0° / -5°	55	11.5	9.2	8.5	0.0
Feb	2° / -4°	42	9.7	7.4	9.8	0.0
Mar	7° / -1°	62	12	6.5	11.6	0.7
Apr	12° / 3°	61	12	2.1	13.4	3.2
May	17° / 8°	103	15.6	0.1	15	4.7
Jun	20° / 11°	106	15.1	0	15.9	5.5
Jul	22° / 13°	120	15.7	0	15.5	5.9
Aug	22° / 12°	111	13.6	0	14.2	6.0
Sep	17° / 9°	75	11.5	0	12.4	5.1
Oct	12° / 5°	57	10.6	0.8	10.5	2.9
Nov	6° / 1°	49	9.9	4.3	8.9	0.5
Dec	1° / -3°	48	11.1	7.7	8.1	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 62%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	44	43	43	43	43	42	42	40	40	41	39	39	39	37	37	36	36	36	36	36	35	35	35	35	35	34	34	34	33	33
Cloudier (%)	56	57	57	57	57	58	58	60	60	59	61	61	61	63	63	64	64	64	64	64	65	65	65	65	65	66	66	66	67	67

	Clearer (%)	Cloudier (%)
1	44	56
2	43	57
3	43	57
4	43	57
5	43	57
6	42	58
7	42	58
8	40	60
9	40	60
10	41	59
11	39	61
12	39	61
13	39	61
14	37	63
15	37	63
16	36	64
17	36	64
18	36	64
19	36	64
20	36	64
21	35	65
22	35	65
23	35	65
24	35	65
25	35	65
26	34	66
27	34	66
28	34	66
29	33	67
30	33	67

Chance of precipitation in September

Any precipitation

Cesky Krumlov gets around 75 mm of rain over 11.5 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 45% on the wettest days. The odds ease toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	45	45	45	45	45	44	44	44	43	42	41	41	40	39	39	38	37	37	36	35	35	34	34	34	34	34	34	35	35	36

	Rain chance (%)
1	45
2	45
3	45
4	45
5	45
6	44
7	44
8	44
9	43
10	42
11	41
12	41
13	40
14	39
15	39
16	38
17	37
18	37
19	36
20	35
21	35
22	34
23	34
24	34
25	34
26	34
27	34
28	35
29	35
30	36

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 88% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	73	74	75	77	78	79	80	81	83	84	85	86	87	88	89	89	90	91	92	93	94	95	96	96	97	97	98	98	98	99
Comfortable (%)	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	11	10	9	8	7	6	5	4	4	3	3	2	2	2	1
Humid (%)	2	2	2	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)
1	73	25	2
2	74	24	2
3	75	23	2
4	77	22	1
5	78	21	1
6	79	20	1
7	80	19	1
8	81	18	1
9	83	17	0
10	84	16	0
11	85	15	0
12	86	14	0
13	87	13	0
14	88	12	0
15	89	11	0
16	89	11	0
17	90	10	0
18	91	9	0
19	92	8	0
20	93	7	0
21	94	6	0
22	95	5	0
23	96	4	0
24	96	4	0
25	97	3	0
26	97	3	0
27	98	2	0
28	98	2	0
29	98	2	0
30	99	1	0

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	9	calm
2	9	calm
3	9	calm
4	9	calm
5	9	calm
6	9	calm
7	9	calm
8	9	calm
9	9	calm
10	9	calm
11	9	calm
12	9	calm
13	9	calm
14	9	calm
15	9	calm
16	9	calm
17	9	calm
18	9	calm
19	9	calm
20	9	calm
21	9	calm
22	9	calm
23	9	calm
24	9	calm
25	9	calm
26	9	calm
27	9	calm
28	9	calm
29	9	calm
30	9	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 18 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 108 minutes over September. Sunrise moves from 5:25 AM to 6:07 AM, and sunset from 6:40 PM to 5:37 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	13.3	13.2	13.1	13.1	13.0	13.0	12.9	12.8	12.8	12.7	12.7	12.6	12.5	12.5	12.4	12.4	12.3	12.2	12.2	12.1	12.0	12.0	11.9	11.9	11.8	11.7	11.7	11.6	11.6	11.5
Sunrise (AM)	5:25	5:26	5:27	5:29	5:30	5:32	5:33	5:35	5:36	5:38	5:39	5:41	5:42	5:44	5:45	5:46	5:48	5:49	5:51	5:52	5:54	5:55	5:57	5:58	6:00	6:01	6:03	6:04	6:06	6:07
Sunset (PM)	6:40	6:38	6:36	6:34	6:32	6:30	6:27	6:25	6:23	6:21	6:19	6:16	6:14	6:12	6:10	6:08	6:05	6:03	6:01	5:59	5:57	5:54	5:52	5:50	5:48	5:46	5:43	5:41	5:39	5:37

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.3	5:25	6:40
2	13.2	5:26	6:38
3	13.1	5:27	6:36
4	13.1	5:29	6:34
5	13.0	5:30	6:32
6	13.0	5:32	6:30
7	12.9	5:33	6:27
8	12.8	5:35	6:25
9	12.8	5:36	6:23
10	12.7	5:38	6:21
11	12.7	5:39	6:19
12	12.6	5:41	6:16
13	12.5	5:42	6:14
14	12.5	5:44	6:12
15	12.4	5:45	6:10
16	12.4	5:46	6:08
17	12.3	5:48	6:05
18	12.2	5:49	6:03
19	12.2	5:51	6:01
20	12.1	5:52	5:59
21	12.0	5:54	5:57
22	12.0	5:55	5:54
23	11.9	5:57	5:52
24	11.9	5:58	5:50
25	11.8	6:00	5:48
26	11.7	6:01	5:46
27	11.7	6:03	5:43
28	11.6	6:04	5:41
29	11.6	6:06	5:39
30	11.5	6:07	5:37

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.29 kWh/m².

For context, solar energy here swings from a low near 0.89 kWh/m² to a high of 5.43 kWh/m² in June across the year — September's 3.29 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	3.9	3.8	3.8	3.7	3.7	3.7	3.6	3.6	3.5	3.5	3.5	3.4	3.4	3.4	3.3	3.3	3.3	3.2	3.2	3.1	3.1	3.0	3.0	3.0	2.9	2.9	2.9	2.8	2.8	2.7
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.9	Moderate
2	3.8	Moderate
3	3.8	Moderate
4	3.7	Moderate
5	3.7	Moderate
6	3.7	Moderate
7	3.6	Moderate
8	3.6	Moderate
9	3.5	Moderate
10	3.5	Moderate
11	3.5	Moderate
12	3.4	Moderate
13	3.4	Moderate
14	3.4	Moderate
15	3.3	Moderate
16	3.3	Moderate
17	3.3	Moderate
18	3.2	Moderate
19	3.2	Moderate
20	3.1	Moderate
21	3.1	Moderate
22	3.0	Moderate
23	3.0	Moderate
24	3.0	Moderate
25	2.9	Moderate
26	2.9	Moderate
27	2.9	Moderate
28	2.8	Moderate
29	2.8	Moderate
30	2.7	Moderate

Planning a trip in September

Is September a good time to visit Cesky Krumlov?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.1

Sightseeing

4th-best month of the year

1.2

Beach & pool

4th-best month of the year

September is a reasonable time to visit Cesky Krumlov for sightseeing.

What to pack for Cesky Krumlov in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Cesky Krumlov sees daytime highs around 17°C and nights near 9°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

UV index in Cesky Krumlov in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cesky Krumlov peaks around July 13 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	2	4	5	6	7	8	7	5	3	1	1
Level	Low	Low	Moderate	High	High	Very high	Very high	High	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Low
Mar	4	Moderate
Apr	5	High
May	6	High
Jun	7	Very high
Jul	8	Very high
Aug	7	High
Sep	5	Moderate
Oct	3	Moderate
Nov	1	Low
Dec	1	Low

Location & terrain

Where is Cesky Krumlov?

Cesky Krumlov sits at 48.8°N, 14.3°E, 0 m above sea level, in Czechia. The nearest listed city is České Budějovice, 22 km away.

Topography around Cesky Krumlov

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Cesky Krumlov.

Within 3 km, the terrain around Cesky Krumlov has significant variations in elevation — a maximum elevation change of 277 m around an average of 579 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 691 m; within 80 km, large variations in elevation — a maximum elevation change of 1,193 m.

The land around Cesky Krumlov is covered by trees (60%) and grassland (25%) within 3 km, trees (55%) and grassland (31%) within 16 km, and trees (49%), grassland (24%) and cropland (23%) within 80 km.

3 km

277 m

trees 60%

16 km

691 m

trees 55%

80 km

1,193 m

trees 49%

treesgrasslandcroplandartificial surfaceswater

← August Cesky Krumlov year-round climate October →Best places to visit in September

September weather nearby: České Budějovice 22 km · Linz 56 km · Písek 57 km · Strakonice 58 km · Jindřichův Hradec 62 km · Traun 66 km · Ansfelden 67 km · Passau 70 km

Czechia travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type C / E; 230 V · 50 Hz
Prices: ≈ 59% of US; price level, 2025
GDP per capita: $35,917; 2025
Happiness: 6.8 / 10; World Happiness, 2025
Safe drinking water: 98%; of population, 2024
Homicide rate: 0.8; per 100k, 2023
Road deaths: 5.9; per 100k/yr, 2019
Income group: High; World Bank
English: High; EF EPI 582
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Cesky Krumlov (48.8109°, 14.3152°, elevation 0 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	19	11
2	19	11
3	19	10
4	19	10
5	19	10
6	18	10
7	18	10
8	18	10
9	18	10
10	18	9
11	18	9
12	17	9
13	17	9
14	17	9
15	17	9
16	17	9
17	17	8
18	16	8
19	16	8
20	16	8
21	16	8
22	16	8
23	16	8
24	16	7
25	15	7
26	15	7
27	15	7
28	15	7
29	15	7
30	15	7

	Clearer (%)	Cloudier (%)
1	44	56
2	43	57
3	43	57
4	43	57
5	43	57
6	42	58
7	42	58
8	40	60
9	40	60
10	41	59
11	39	61
12	39	61
13	39	61
14	37	63
15	37	63
16	36	64
17	36	64
18	36	64
19	36	64
20	36	64
21	35	65
22	35	65
23	35	65
24	35	65
25	35	65
26	34	66
27	34	66
28	34	66
29	33	67
30	33	67

	Rain chance (%)
1	45
2	45
3	45
4	45
5	45
6	44
7	44
8	44
9	43
10	42
11	41
12	41
13	40
14	39
15	39
16	38
17	37
18	37
19	36
20	35
21	35
22	34
23	34
24	34
25	34
26	34
27	34
28	35
29	35
30	36

	Dry (%)	Comfortable (%)	Humid (%)
1	73	25	2
2	74	24	2
3	75	23	2
4	77	22	1
5	78	21	1
6	79	20	1
7	80	19	1
8	81	18	1
9	83	17	0
10	84	16	0
11	85	15	0
12	86	14	0
13	87	13	0
14	88	12	0
15	89	11	0
16	89	11	0
17	90	10	0
18	91	9	0
19	92	8	0
20	93	7	0
21	94	6	0
22	95	5	0
23	96	4	0
24	96	4	0
25	97	3	0
26	97	3	0
27	98	2	0
28	98	2	0
29	98	2	0
30	99	1	0

	Avg high (°C)	Avg low (°C)
1	19	11
2	19	11
3	19	10
4	19	10
5	19	10
6	18	10
7	18	10
8	18	10
9	18	10
10	18	9
11	18	9
12	17	9
13	17	9
14	17	9
15	17	9
16	17	9
17	17	8
18	16	8
19	16	8
20	16	8
21	16	8
22	16	8
23	16	8
24	16	7
25	15	7
26	15	7
27	15	7
28	15	7
29	15	7
30	15	7

	Clearer (%)	Cloudier (%)
1	44	56
2	43	57
3	43	57
4	43	57
5	43	57
6	42	58
7	42	58
8	40	60
9	40	60
10	41	59
11	39	61
12	39	61
13	39	61
14	37	63
15	37	63
16	36	64
17	36	64
18	36	64
19	36	64
20	36	64
21	35	65
22	35	65
23	35	65
24	35	65
25	35	65
26	34	66
27	34	66
28	34	66
29	33	67
30	33	67

	Rain chance (%)
1	45
2	45
3	45
4	45
5	45
6	44
7	44
8	44
9	43
10	42
11	41
12	41
13	40
14	39
15	39
16	38
17	37
18	37
19	36
20	35
21	35
22	34
23	34
24	34
25	34
26	34
27	34
28	35
29	35
30	36

	Dry (%)	Comfortable (%)	Humid (%)
1	73	25	2
2	74	24	2
3	75	23	2
4	77	22	1
5	78	21	1
6	79	20	1
7	80	19	1
8	81	18	1
9	83	17	0
10	84	16	0
11	85	15	0
12	86	14	0
13	87	13	0
14	88	12	0
15	89	11	0
16	89	11	0
17	90	10	0
18	91	9	0
19	92	8	0
20	93	7	0
21	94	6	0
22	95	5	0
23	96	4	0
24	96	4	0
25	97	3	0
26	97	3	0
27	98	2	0
28	98	2	0
29	98	2	0
30	99	1	0

	Avg high (°C)	Avg low (°C)
1	19	11
2	19	11
3	19	10
4	19	10
5	19	10
6	18	10
7	18	10
8	18	10
9	18	10
10	18	9
11	18	9
12	17	9
13	17	9
14	17	9
15	17	9
16	17	9
17	17	8
18	16	8
19	16	8
20	16	8
21	16	8
22	16	8
23	16	8
24	16	7
25	15	7
26	15	7
27	15	7
28	15	7
29	15	7
30	15	7

	Clearer (%)	Cloudier (%)
1	44	56
2	43	57
3	43	57
4	43	57
5	43	57
6	42	58
7	42	58
8	40	60
9	40	60
10	41	59
11	39	61
12	39	61
13	39	61
14	37	63
15	37	63
16	36	64
17	36	64
18	36	64
19	36	64
20	36	64
21	35	65
22	35	65
23	35	65
24	35	65
25	35	65
26	34	66
27	34	66
28	34	66
29	33	67
30	33	67

	Rain chance (%)
1	45
2	45
3	45
4	45
5	45
6	44
7	44
8	44
9	43
10	42
11	41
12	41
13	40
14	39
15	39
16	38
17	37
18	37
19	36
20	35
21	35
22	34
23	34
24	34
25	34
26	34
27	34
28	35
29	35
30	36

	Dry (%)	Comfortable (%)	Humid (%)
1	73	25	2
2	74	24	2
3	75	23	2
4	77	22	1
5	78	21	1
6	79	20	1
7	80	19	1
8	81	18	1
9	83	17	0
10	84	16	0
11	85	15	0
12	86	14	0
13	87	13	0
14	88	12	0
15	89	11	0
16	89	11	0
17	90	10	0
18	91	9	0
19	92	8	0
20	93	7	0
21	94	6	0
22	95	5	0
23	96	4	0
24	96	4	0
25	97	3	0
26	97	3	0
27	98	2	0
28	98	2	0
29	98	2	0
30	99	1	0