Žilina weather in September

In September, Žilina sees average daytime highs of 17°C and overnight lows near 8°C, with 83 mm of rain across 12.2 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 Žilina's 3rd-clearest and 9th-windiest month. For the whole year in context, see Žilina's year-round climate.

Daytime high
17°
4th warmest
Overnight low
9th coldest
Rainfall
83 mm
12.2 wet days
Daylight
12 h 24 min
5:29 AM – 5:50 PM
Cloud cover
63%
3rd clearest
Wind
9 km/h
9th windiest
Solar energy
3.17 kWh/m²
Travel score
5.1
out of 10

Žilina is capital of the Žilina region in north-western Slovakia.

Air quality
Elevated
PM2.5 18.4 µg/m³ · 2019
Density
1,015/km²
people per km²
Founded
1069

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

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 Žilina reaches about 17°C in the afternoon and slips back to 8°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 22°C. Set against its neighbours, September runs about 5°C cooler than August and about 6°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12010
21910
3199
4199
5199
6199
7189
8189
9189
10189
11188
12188
13178
14178
15178
16178
17178
18177
19167
20167
21167
22167
23167
24167
25157
26156
27156
28156
29156
30156

How September really feels in Žilina

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
0
heat index over the day's high
Days feeling ≤ C
0
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.

Žilina 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-0° / -6°6312.110.38.50.0
Feb / -5°5911.39.69.80.0
Mar / -2°6812.8711.60.6
Apr12° / 6711.72.713.43.1
May17° / 9815.20.215.14.7
Jun20° / 10°10615.4015.95.5
Jul22° / 12°11616015.65.8
Aug22° / 12°9212.8014.26.3
Sep17° / 8312.2012.45.1
Oct12° / 69111.410.52.8
Nov / 6311.45.38.90.5
Dec / -4°6412.110.18.10.0

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 16% of September, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24555
34555
44357
54357
64357
74258
84258
94159
104060
114060
124060
134060
144060
153961
163961
173961
183961
193961
203961
213961
223961
233961
244060
253961
263961
273961
283961
293862
303862

Chance of precipitation in September

Any precipitation

Žilina gets around 83 mm of rain over 12.2 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 40% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
144
244
343
443
543
643
743
843
942
1042
1141
1241
1340
1440
1539
1639
1739
1839
1939
2039
2139
2238
2338
2438
2538
2638
2739
2839
2939
3039

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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
175223
277212
378202
479192
581181
681181
782171
883170
984160
1085150
1186140
1287130
1388120
1489110
1589110
1690100
179190
189280
199370
209370
219460
229550
239550
249640
259730
269730
279730
289820
299820
309820

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 5:06 AM to 5:50 AM, and sunset from 6:23 PM to 5:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:066:23
213.25:086:21
313.25:096:19
413.15:116:17
513.05:126:15
613.05:146:12
712.95:156:10
812.95:176:08
912.85:186:06
1012.75:206:04
1112.75:216:01
1212.65:235:59
1312.55:245:57
1412.55:265:55
1512.45:275:52
1612.45:295:50
1712.35:305:48
1812.25:325:46
1912.25:335:43
2012.15:355:41
2112.05:365:39
2212.05:385:37
2311.95:395:34
2411.95:415:32
2511.85:425:30
2611.75:445:28
2711.75:455:26
2811.65:475:23
2911.55:485:21
3011.55:505:19

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.17 kWh/m².

For context, solar energy here swings from a low near 0.77 kWh/m² to a high of 5.31 kWh/m² in June across the year — September's 3.17 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.7Moderate
43.7Moderate
53.6Moderate
63.6Moderate
73.5Moderate
83.5Moderate
93.5Moderate
103.4Moderate
113.4Moderate
123.3Moderate
133.3Moderate
143.3Moderate
153.2Moderate
163.2Moderate
173.1Moderate
183.1Moderate
193.0Moderate
203.0Moderate
213.0Moderate
222.9Moderate
232.9Moderate
242.8Moderate
252.8Moderate
262.7Moderate
272.7Moderate
282.6Moderate
292.6Moderate
302.6Moderate
Planning a trip in September

Is September a good time to visit Žilina?

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
1.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Žilina for sightseeing.

What to pack for Žilina in September

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

In September, Žilina sees daytime highs around 17°C and nights near 8°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

UV index in Žilina in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Žilina peaks around July 11 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 11UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May6High
Jun8Very high
Jul8Very high
Aug7High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Žilina in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Žilina is worst in June — around 23 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Žilina's WHO annual average of 18.4 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1722 µg/m³Dec 1313 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar20Moderate
Apr21Moderate
May21Moderate
Jun23Moderate
Jul21Moderate
Aug21Moderate
Sep18Moderate
Oct15Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Žilina?

Žilina sits at 49.2°N, 18.7°E, 347 m above sea level, in Slovakia. The nearest listed city is Rajecke Teplice, 11 km away.

ČadcaPovažská BystricaPúchovDolný KubínRužomberokBojnice

Topography around Žilina

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

Within 3 km, the terrain around Žilina has significant variations in elevation — a maximum elevation change of 293 m around an average of 376 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,177 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,023 m.

The land around Žilina is covered by artificial surfaces (40%) and trees (37%) within 3 km, trees (64%) within 16 km, and trees (68%) within 80 km.

3 km
293 m
16 km
1,177 m
80 km
2,023 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Rajecke Teplice 11 km · Martin 22 km · Čadca 24 km · Považská Bystrica 26 km · Púchov 32 km · Dolný Kubín 41 km · Ružomberok 44 km · Bojnice 50 km

Slovakia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E / F
230 V · 50 Hz
Prices
≈ 58% of US
price level, 2025
GDP per capita
$28,544
2025
Happiness
6.3 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
6.1
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 606
Religion
Roman Catholic 56%none 24%Evangelical Church of the Augsburg Confession 5%Greek Catholic 4%

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 Žilina (49.2231°, 18.7394°, elevation 347 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).