Maribor weather in September

In September, Maribor sees average daytime highs of 20°C and overnight lows near 11°C, with 111 mm of rain across 10.2 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 32% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 12 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Maribor's 4th-clearest and 10th-windiest month. For the whole year in context, see Maribor's year-round climate.

Daytime high
20°
4th warmest
Overnight low
11°
9th coldest
Rainfall
111 mm
10.2 wet days
Daylight
12 h 18 min
5:42 AM – 6:02 PM
Cloud cover
58%
4th clearest
Wind
8 km/h
10th windiest
Solar energy
3.55 kWh/m²
Travel score
6.3
out of 10

Maribor is city in Slovenia.

Air quality
Moderate
PM2.5 12.9 µg/m³ · 2019
Density
2,347/km²
people per km²
Founded
1164

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 22°C in the first days to 19°C by the end.

A typical September day in Maribor reaches about 20°C in the afternoon and slips back to 11°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 26°C. Set against its neighbours, September runs about 5°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12313
22313
32213
42213
52213
62213
72212
82212
92112
102112
112112
122112
132112
142111
152111
162011
172011
182011
192011
202011
212011
221910
231910
241910
251910
261910
271910
281910
291810
30189

How September really feels in Maribor

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.

Maribor weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°386.94.38.80.0
Feb / -2°507.74.2100.5
Mar11° / 599.62.711.62.8
Apr16° / 7110.70.713.34.8
May20° / 11°9912.8014.86.0
Jun24° / 14°10713.1015.66.4
Jul26° / 16°10411.9015.26.5
Aug25° / 15°10811.20146.7
Sep20° / 11°11110.2012.46.3
Oct15° / 779.10.210.74.7
Nov / 779.329.21.8
Dec / -2°628.64.28.40.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15347
25347
35347
45347
55248
65248
75248
85050
95050
105050
114951
124951
134951
144951
154852
164852
174753
184753
194654
204654
214654
224654
234654
244753
254753
264753
274753
284753
294753
304654

Chance of precipitation in September

Any precipitation

Maribor gets around 111 mm of rain over 10.2 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 38% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
238
337
437
537
637
737
836
936
1036
1136
1235
1335
1435
1534
1634
1734
1834
1933
2033
2133
2232
2332
2431
2531
2631
2731
2831
2931
3031

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 63% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14337201
24536181
34636171
44836160
54936150
65135140
75235130
85335120
95435110
105435110
115634100
12573490
13593380
14603280
15623170
16633070
17652960
18682750
19692650
20712540
21722440
22742330
23752230
24772120
25782020
26792010
27801910
28801910
29811810
30811810

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 12 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 102 minutes over September. Sunrise moves from 5:22 AM to 6:01 AM, and sunset from 6:32 PM to 5:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:226:32
213.15:236:30
313.15:256:28
413.05:266:26
512.95:276:24
612.95:296:22
712.85:306:20
812.85:316:18
912.75:336:16
1012.75:346:14
1112.65:356:12
1212.65:376:10
1312.55:386:08
1412.45:396:06
1512.45:416:04
1612.35:426:02
1712.35:435:59
1812.25:455:57
1912.25:465:55
2012.15:475:53
2112.05:495:51
2212.05:505:49
2311.95:515:47
2411.95:535:45
2511.85:545:43
2611.85:555:41
2711.75:575:39
2811.65:585:37
2911.65:595:35
3011.56:015:33

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.55 kWh/m².

For context, solar energy here swings from a low near 1.09 kWh/m² to a high of 5.72 kWh/m² in June across the year — September's 3.55 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.2Bright
24.1Bright
34.1Bright
44.0Bright
54.0Bright
64.0Moderate
73.9Moderate
83.9Moderate
93.8Moderate
103.8Moderate
113.8Moderate
123.7Moderate
133.7Moderate
143.6Moderate
153.6Moderate
163.5Moderate
173.5Moderate
183.4Moderate
193.4Moderate
203.4Moderate
213.3Moderate
223.3Moderate
233.2Moderate
243.2Moderate
253.2Moderate
263.1Moderate
273.1Moderate
283.0Moderate
293.0Moderate
303.0Moderate
Planning a trip in September

Is September a good time to visit Maribor?

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

6.3
Sightseeing
4th-best month of the year
3.6
Beach & pool
4th-best month of the year

September is a reasonable time to visit Maribor for sightseeing.

What to pack for Maribor in September

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

In September, Maribor sees daytime highs around 20°C and nights near 11°C. Worth packing: rain gear. About 10 days see rain.

rain gear

UV index in Maribor 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 Maribor peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 15UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Maribor 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 Maribor is worst in March — around 15 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Seasonal pattern from CAMS reanalysis, scaled to Maribor's WHO annual average of 12.9 µg/m³.

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 2415 µg/m³Sep 1911 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb13Moderate
Mar15Moderate
Apr15Moderate
May13Moderate
Jun14Moderate
Jul12Moderate
Aug12Good
Sep11Good
Oct11Good
Nov11Good
Dec12Moderate
Location & terrain

Where is Maribor?

Maribor sits at 46.6°N, 15.6°E, 262 m above sea level, in Slovenia. The nearest listed city is Ptuj, 23 km away.

PtujVelenjeCelje

Topography around Maribor

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

Within 3 km, the terrain around Maribor has only modest variations in elevation — a maximum elevation change of 192 m around an average of 289 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,132 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,121 m.

The land around Maribor is covered by artificial surfaces (40%) and trees (34%) within 3 km, trees (55%) and grassland (24%) within 16 km, and trees (64%) within 80 km.

3 km
192 m
16 km
1,132 m
80 km
2,121 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Ptuj 23 km · Velenje 46 km · Celje 47 km · Straßgang 56 km · Sankt Peter 57 km · Jakomini 57 km · Wetzelsdorf 58 km · Gries 59 km

Slovenia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 63% of US
price level, 2025
GDP per capita
$37,376
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
5.1
per 100k/yr, 2019
Income group
High
World Bank
Religion
Catholic 69%atheist 14%Orthodox 4%non-believer/agnostic 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 Maribor (46.5558°, 15.6459°, elevation 262 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).