Silkeborg weather in September

In September, Silkeborg sees average daytime highs of 17°C and overnight lows near 10°C, with 64 mm of rain across 11.8 wet days and about 12.5 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 15°C by the end. The sky is clear or mostly clear about 16% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 42 min at the start of September to 11 h 18 min by month's end. Set against the rest of the year, September is Silkeborg's 6th-clearest and 7th-windiest month. For the whole year in context, see Silkeborg's year-round climate.

Daytime high
17°
4th warmest
Overnight low
10°
9th coldest
Rainfall
64 mm
11.8 wet days
Daylight
12 h 30 min
6:02 AM – 6:30 PM
Cloud cover
70%
6th clearest
Wind
15 km/h
7th windiest
Solar energy
2.71 kWh/m²
Travel score
4.8
out of 10

Silkeborg is city in central Denmark.

Density
195/km²
people per km²
Founded
1470

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 18°C in the first days to 15°C by the end.

A typical September day in Silkeborg reaches about 17°C in the afternoon and slips back to 10°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 20°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11811
21811
31811
41811
51811
61810
71810
81810
91710
101710
111710
121710
131710
141710
151710
161610
17169
18169
19169
20169
21169
22169
23159
24159
25159
26159
27158
28158
29158
30148

How September really feels in Silkeborg

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.

Silkeborg 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 / -1°5811.63.97.30.0
Feb / -1°4710.14.19.10.0
Mar / 4810.92.511.40.6
Apr11° / 4810.30.613.82.7
May15° / 6411.50164.5
Jun18° / 10°7811.6017.25.5
Jul20° / 12°7612.1016.86.0
Aug20° / 12°7912.9014.95.8
Sep17° / 10°6411.8012.54.8
Oct12° / 7012.10.110.12.9
Nov / 5411.20.97.90.9
Dec / 5811.52.56.70.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% 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 69%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13466
23466
33466
43466
53367
63466
73466
83466
93466
103466
113466
123367
133268
143268
153367
163268
173169
183070
193169
202971
212971
222971
232971
242872
252872
262872
272872
282872
292971
302971

Chance of precipitation in September

Any precipitation

Silkeborg gets around 64 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 40% and peaks near 45% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
145
245
344
444
544
644
744
844
944
1043
1143
1242
1342
1441
1540
1639
1739
1838
1937
2036
2136
2235
2335
2435
2535
2635
2736
2836
2936
3037

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
170273
271272
372262
472262
574251
675241
775241
876231
977221
1078211
1179201
1280191
1381181
1482171
1583161
1685141
1786131
1888120
1989110
2089110
2190100
229190
239190
249280
259280
269370
279370
289370
299460
309460

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 42 min at the start of September to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 144 minutes over September. Sunrise moves from 5:32 AM to 6:31 AM, and sunset from 7:11 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:327:11
213.65:347:08
313.55:367:06
413.45:387:03
513.35:407:00
613.35:426:58
713.25:446:55
813.15:466:52
913.05:486:49
1012.95:506:47
1112.95:526:44
1212.85:546:41
1312.75:566:38
1412.65:586:36
1512.56:006:33
1612.56:026:30
1712.46:046:27
1812.36:066:24
1912.26:086:22
2012.16:106:19
2112.16:126:16
2212.06:156:13
2311.96:176:11
2411.86:196:08
2511.76:216:05
2611.76:236:02
2711.66:256:00
2811.56:275:57
2911.46:295:54
3011.36:315:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.71 kWh/m².

For context, solar energy here swings from a low near 0.35 kWh/m² to a high of 5.65 kWh/m² in June across the year — September's 2.71 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.3Moderate
43.3Moderate
53.2Moderate
63.2Moderate
73.1Moderate
83.1Moderate
93.0Moderate
103.0Moderate
112.9Moderate
122.9Moderate
132.8Moderate
142.8Moderate
152.7Moderate
162.7Moderate
172.6Moderate
182.6Moderate
192.5Moderate
202.5Moderate
212.5Moderate
222.4Moderate
232.4Moderate
242.3Moderate
252.3Moderate
262.2Moderate
272.2Moderate
282.1Moderate
292.1Moderate
302.0Moderate
Planning a trip in September

Is September a good time to visit Silkeborg?

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

4.8
Sightseeing
4th-best month of the year
1.0
Beach & pool
4th-best month of the year

September is a reasonable time to visit Silkeborg for sightseeing.

What to pack for Silkeborg in September

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

In September, Silkeborg sees daytime highs around 17°C and nights near 10°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near Silkeborg in September

The nearest coast averages about 15°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 49 km away) is warmest in August at about 18°C and coldest in February near 2°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan3Bracing
Feb2Bracing
Mar3Bracing
Apr5Bracing
May11Bracing
Jun14Bracing
Jul17Cool
Aug18Cool
Sep15Cool
Oct12Bracing
Nov9Bracing
Dec4Bracing

UV index in Silkeborg in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Silkeborg peaks around June 20 at about 6 (high) — a little sun protection helps at midday. It bottoms out near December 20 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 20UV 6Dec 20UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May5Moderate
Jun6High
Jul5High
Aug5High
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Silkeborg?

Silkeborg sits at 56.2°N, 9.5°E, 19 m above sea level, in Denmark. The nearest listed city is Viborg, 33 km away.

ViborgTilstHerningVibyHorsensAarhusRandersHedensted

Topography around Silkeborg

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

Within 3 km, the terrain around Silkeborg has only modest variations in elevation — a maximum elevation change of 83 m around an average of 44 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 161 m; within 80 km, only modest variations in elevation — a maximum elevation change of 185 m.

The land around Silkeborg is covered by trees (52%) and artificial surfaces (24%) within 3 km, trees (41%), cropland (28%) and grassland (24%) within 16 km, and cropland (40%) and grassland (20%) within 80 km.

3 km
83 m
16 km
161 m
80 km
185 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Viborg 33 km · Tilst 35 km · Herning 35 km · Viby 38 km · Horsens 39 km · Aarhus 41 km · Randers 44 km · Hedensted 45 km

Denmark travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E / F / K
230 V · 50 Hz
Prices
≈ 92% of US
price level, 2025
GDP per capita
$76,970
2025
Happiness
7.5 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
3.7
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 611
Religion
Evangelical Lutheran 71%other/none/unspecified 24%Muslim 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 Silkeborg (56.1697°, 9.5451°, elevation 19 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).