Velenje weather in September

In September, Velenje sees average daytime highs of 20°C and overnight lows near 11°C, with 109 mm of rain across 11.8 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 18°C by the end. The sky is clear or mostly clear about 29% 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 Velenje's 4th-clearest and 11th-windiest month. For the whole year in context, see Velenje's year-round climate.

Daytime high: 20°; 4th warmest
Overnight low: 11°; 9th coldest
Rainfall: 109 mm; 11.8 wet days
Daylight: 12 h 18 min; 5:44 AM – 6:04 PM
Cloud cover: 59%; 4th clearest
Wind: 6 km/h; 11th windiest
Solar energy: 3.48 kWh/m²
Travel score: 5.9; out of 10

Velenje is city in Slovenia.

Air quality: Good; PM10 16.9 µg/m³ · 2019
Density: 1,931/km²; people per km²
Founded: 1889

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

← August Velenje 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 22°C in the first days to 18°C by the end.

A typical September day in Velenje 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 14°C and 24°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)	22	22	22	21	21	21	21	21	21	20	20	20	20	20	20	19	19	19	19	19	19	19	18	18	18	18	18	18	17	17
Avg low (°C)	13	13	12	12	12	12	12	12	12	11	11	11	11	11	11	11	10	10	10	10	10	10	10	10	9	9	9	9	9	9

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

How September really feels in Velenje

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.

Velenje weather by month

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

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	3° / -3°	43	7.4	4.6	8.8	0.0
Feb	5° / -3°	56	7.5	4.5	10	0.3
Mar	10° / 1°	65	10.2	3.5	11.6	2.3
Apr	15° / 5°	84	12	0.9	13.3	4.1
May	19° / 10°	102	13.9	0	14.7	5.6
Jun	23° / 13°	115	14.4	0	15.5	6.1
Jul	25° / 15°	120	14.2	0	15.2	6.4
Aug	24° / 15°	110	12.8	0	14	6.5
Sep	20° / 11°	109	11.8	0	12.4	5.9
Oct	14° / 6°	96	9.3	0.4	10.7	4.3
Nov	8° / 2°	92	10	2.3	9.2	1.4
Dec	4° / -2°	70	8.9	4.9	8.5	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 52%.

	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 (%)	53	53	53	53	53	52	52	51	50	50	49	50	49	48	48	47	47	46	46	46	46	46	46	45	45	45	44	44	44	43
Cloudier (%)	47	47	47	47	47	48	48	49	50	50	51	50	51	52	52	53	53	54	54	54	54	54	54	55	55	55	56	56	56	57

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	53	47
6	52	48
7	52	48
8	51	49
9	50	50
10	50	50
11	49	51
12	50	50
13	49	51
14	48	52
15	48	52
16	47	53
17	47	53
18	46	54
19	46	54
20	46	54
21	46	54
22	46	54
23	46	54
24	45	55
25	45	55
26	45	55
27	44	56
28	44	56
29	44	56
30	43	57

Chance of precipitation in September

Any precipitation

Velenje gets around 109 mm of rain over 11.8 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 41% on the wettest days.

	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 (%)	41	41	41	41	41	41	41	41	41	41	41	40	40	40	40	39	39	39	39	38	38	38	37	37	36	36	36	36	35	35

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

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 67% 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 (%)	45	48	50	51	54	55	56	57	58	60	60	61	63	64	66	67	69	71	72	74	76	78	79	81	82	83	85	86	86	87
Comfortable (%)	37	37	36	36	35	35	35	35	35	34	34	34	33	32	31	30	29	27	26	24	23	21	20	18	17	16	15	14	14	13
Humid (%)	17	16	14	13	11	10	9	8	7	6	6	5	4	4	3	3	2	2	2	2	1	1	1	1	1	1	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)
1	45	37	17
2	48	37	16
3	50	36	14
4	51	36	13
5	54	35	11
6	55	35	10
7	56	35	9
8	57	35	8
9	58	35	7
10	60	34	6
11	60	34	6
12	61	34	5
13	63	33	4
14	64	32	4
15	66	31	3
16	67	30	3
17	69	29	2
18	71	27	2
19	72	26	2
20	74	24	2
21	76	23	1
22	78	21	1
23	79	20	1
24	81	18	1
25	82	17	1
26	83	16	1
27	85	15	0
28	86	14	0
29	86	14	0
30	87	13	0

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 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)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6
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	6	calm
2	6	calm
3	6	calm
4	6	calm
5	6	calm
6	6	calm
7	6	calm
8	6	calm
9	6	calm
10	6	calm
11	6	calm
12	6	calm
13	6	calm
14	6	calm
15	6	calm
16	6	calm
17	6	calm
18	6	calm
19	6	calm
20	6	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	calm
27	6	calm
28	6	calm
29	6	calm
30	6	calm

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 5:25 AM to 6:03 AM, and sunset from 6:34 PM to 5:35 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)	13.2	13.1	13.0	13.0	12.9	12.9	12.8	12.8	12.7	12.7	12.6	12.5	12.5	12.4	12.4	12.3	12.3	12.2	12.2	12.1	12.0	12.0	11.9	11.9	11.8	11.8	11.7	11.6	11.6	11.5
Sunrise (AM)	5:25	5:26	5:27	5:28	5:30	5:31	5:32	5:34	5:35	5:36	5:38	5:39	5:40	5:42	5:43	5:44	5:45	5:47	5:48	5:49	5:51	5:52	5:53	5:55	5:56	5:57	5:59	6:00	6:01	6:03
Sunset (PM)	6:34	6:32	6:30	6:28	6:26	6:24	6:22	6:20	6:18	6:16	6:14	6:12	6:10	6:08	6:06	6:04	6:02	5:59	5:57	5:55	5:53	5:51	5:49	5:47	5:45	5:43	5:41	5:39	5:37	5:35

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.2	5:25	6:34
2	13.1	5:26	6:32
3	13.0	5:27	6:30
4	13.0	5:28	6:28
5	12.9	5:30	6:26
6	12.9	5:31	6:24
7	12.8	5:32	6:22
8	12.8	5:34	6:20
9	12.7	5:35	6:18
10	12.7	5:36	6:16
11	12.6	5:38	6:14
12	12.5	5:39	6:12
13	12.5	5:40	6:10
14	12.4	5:42	6:08
15	12.4	5:43	6:06
16	12.3	5:44	6:04
17	12.3	5:45	6:02
18	12.2	5:47	5:59
19	12.2	5:48	5:57
20	12.1	5:49	5:55
21	12.0	5:51	5:53
22	12.0	5:52	5:51
23	11.9	5:53	5:49
24	11.9	5:55	5:47
25	11.8	5:56	5:45
26	11.8	5:57	5:43
27	11.7	5:59	5:41
28	11.6	6:00	5:39
29	11.6	6:01	5:37
30	11.5	6:03	5:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.48 kWh/m².

For context, solar energy here swings from a low near 1.06 kWh/m² to a high of 5.72 kWh/m² in June across the year — September's 3.48 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)	4.1	4.1	4.0	4.0	4.0	3.9	3.9	3.8	3.8	3.7	3.7	3.6	3.6	3.5	3.5	3.5	3.4	3.4	3.3	3.3	3.2	3.2	3.1	3.1	3.1	3.0	3.0	2.9	2.9	2.9
Level	Bright	Bright	Bright	Bright	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	4.1	Bright
2	4.1	Bright
3	4.0	Bright
4	4.0	Bright
5	4.0	Moderate
6	3.9	Moderate
7	3.9	Moderate
8	3.8	Moderate
9	3.8	Moderate
10	3.7	Moderate
11	3.7	Moderate
12	3.6	Moderate
13	3.6	Moderate
14	3.5	Moderate
15	3.5	Moderate
16	3.5	Moderate
17	3.4	Moderate
18	3.4	Moderate
19	3.3	Moderate
20	3.3	Moderate
21	3.2	Moderate
22	3.2	Moderate
23	3.1	Moderate
24	3.1	Moderate
25	3.1	Moderate
26	3.0	Moderate
27	3.0	Moderate
28	2.9	Moderate
29	2.9	Moderate
30	2.9	Moderate

Planning a trip in September

Is September a good time to visit Velenje?

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

5.9

Sightseeing

4th-best month of the year

2.9

Beach & pool

4th-best month of the year

September is a reasonable time to visit Velenje for sightseeing.

What to pack for Velenje in September

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

In September, Velenje sees daytime highs around 20°C and nights near 11°C. Worth packing: rain gear. About 12 days see rain.

rain gear

UV index in Velenje 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 Velenje 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 8 months of the year.

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

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

Air quality in Velenje 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 Velenje is worst in April — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	16	15	17	17	15	15	14	13	12	12	12	14
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Good	Moderate

	PM2.5 (µg/m³)	Level
Jan	16	Moderate
Feb	15	Moderate
Mar	17	Moderate
Apr	17	Moderate
May	15	Moderate
Jun	15	Moderate
Jul	14	Moderate
Aug	13	Moderate
Sep	12	Good
Oct	12	Good
Nov	12	Good
Dec	14	Moderate

Location & terrain

Where is Velenje?

Velenje sits at 46.4°N, 15.1°E, 428 m above sea level, in Slovenia. The nearest listed city is Celje, 18 km away.

Topography around Velenje

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

Within 3 km, the terrain around Velenje has significant variations in elevation — a maximum elevation change of 387 m around an average of 430 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,346 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,372 m.

The land around Velenje is covered by trees (53%) and grassland (27%) within 3 km, trees (65%) and grassland (24%) within 16 km, and trees (70%) within 80 km.

3 km

387 m

trees 53%

16 km

1,346 m

trees 65%

80 km

2,372 m

trees 70%

treesgrasslandcroplandartificial surfaceswater

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

September weather nearby: Celje 18 km · Trbovlje 23 km · Maribor 46 km · Wolfsberg 58 km · Ljubljana 58 km · Ptuj 59 km · Kranj 60 km · Novo Mesto 62 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

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 Velenje (46.3572°, 15.1128°, elevation 428 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).

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

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	53	47
6	52	48
7	52	48
8	51	49
9	50	50
10	50	50
11	49	51
12	50	50
13	49	51
14	48	52
15	48	52
16	47	53
17	47	53
18	46	54
19	46	54
20	46	54
21	46	54
22	46	54
23	46	54
24	45	55
25	45	55
26	45	55
27	44	56
28	44	56
29	44	56
30	43	57

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

	Dry (%)	Comfortable (%)	Humid (%)
1	45	37	17
2	48	37	16
3	50	36	14
4	51	36	13
5	54	35	11
6	55	35	10
7	56	35	9
8	57	35	8
9	58	35	7
10	60	34	6
11	60	34	6
12	61	34	5
13	63	33	4
14	64	32	4
15	66	31	3
16	67	30	3
17	69	29	2
18	71	27	2
19	72	26	2
20	74	24	2
21	76	23	1
22	78	21	1
23	79	20	1
24	81	18	1
25	82	17	1
26	83	16	1
27	85	15	0
28	86	14	0
29	86	14	0
30	87	13	0

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

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	53	47
6	52	48
7	52	48
8	51	49
9	50	50
10	50	50
11	49	51
12	50	50
13	49	51
14	48	52
15	48	52
16	47	53
17	47	53
18	46	54
19	46	54
20	46	54
21	46	54
22	46	54
23	46	54
24	45	55
25	45	55
26	45	55
27	44	56
28	44	56
29	44	56
30	43	57

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

	Dry (%)	Comfortable (%)	Humid (%)
1	45	37	17
2	48	37	16
3	50	36	14
4	51	36	13
5	54	35	11
6	55	35	10
7	56	35	9
8	57	35	8
9	58	35	7
10	60	34	6
11	60	34	6
12	61	34	5
13	63	33	4
14	64	32	4
15	66	31	3
16	67	30	3
17	69	29	2
18	71	27	2
19	72	26	2
20	74	24	2
21	76	23	1
22	78	21	1
23	79	20	1
24	81	18	1
25	82	17	1
26	83	16	1
27	85	15	0
28	86	14	0
29	86	14	0
30	87	13	0

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

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	53	47
4	53	47
5	53	47
6	52	48
7	52	48
8	51	49
9	50	50
10	50	50
11	49	51
12	50	50
13	49	51
14	48	52
15	48	52
16	47	53
17	47	53
18	46	54
19	46	54
20	46	54
21	46	54
22	46	54
23	46	54
24	45	55
25	45	55
26	45	55
27	44	56
28	44	56
29	44	56
30	43	57

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

	Dry (%)	Comfortable (%)	Humid (%)
1	45	37	17
2	48	37	16
3	50	36	14
4	51	36	13
5	54	35	11
6	55	35	10
7	56	35	9
8	57	35	8
9	58	35	7
10	60	34	6
11	60	34	6
12	61	34	5
13	63	33	4
14	64	32	4
15	66	31	3
16	67	30	3
17	69	29	2
18	71	27	2
19	72	26	2
20	74	24	2
21	76	23	1
22	78	21	1
23	79	20	1
24	81	18	1
25	82	17	1
26	83	16	1
27	85	15	0
28	86	14	0
29	86	14	0
30	87	13	0