Aabenraa weather in September

In September, Aabenraa sees average daytime highs of 17°C and overnight lows near 11°C, with 65 mm of rain across 11.6 wet days and about 12.5 hours of daylight. It is the 4th-warmest and 4th-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 15% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Aabenraa's 6th-clearest and 7th-windiest month. For the whole year in context, see Aabenraa's year-round climate.

Daytime high
17°
4th warmest
Overnight low
11°
9th coldest
Rainfall
65 mm
11.6 wet days
Daylight
12 h 24 min
6:03 AM – 6:30 PM
Cloud cover
70%
6th clearest
Wind
15 km/h
7th windiest
Solar energy
2.79 kWh/m²
Travel score
5.1
out of 10

Aabenraa is city in Denmark.

Density
1,693/km²
people per km²
Founded
1231

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 Aabenraa reaches about 17°C in the afternoon and slips back to 11°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 21°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)
11912
21912
31912
41912
51912
61812
71811
81811
91811
101811
111811
121811
131711
141711
151711
161711
171710
181710
191710
201610
211610
221610
231610
241610
251610
261610
27159
28159
29159
30159

How September really feels in Aabenraa

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.

Aabenraa 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°6012.337.50.0
Feb / -0°4910.23.39.30.0
Mar / 5210.72.111.40.8
Apr11° / 4510.10.513.82.9
May16° / 5910.9015.84.8
Jun19° / 11°7311.70175.6
Jul21° / 13°8012.8016.56.0
Aug21° / 13°8313.7014.75.8
Sep17° / 11°6511.6012.55.1
Oct12° / 6512.7010.23.0
Nov / 5511.50.68.11.1
Dec / 6112.22.370.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 68%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23565
33466
43466
53466
63466
73466
83466
93367
103367
113367
123367
133367
143367
153367
163367
173367
183268
193268
203169
213169
223169
233070
243070
253070
263169
273169
283169
293169
303070

Chance of precipitation in September

Any precipitation

Aabenraa gets around 65 mm of rain over 11.6 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 44% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
144
243
343
443
543
642
742
841
941
1040
1140
1239
1338
1438
1537
1637
1737
1837
1936
2036
2136
2237
2337
2437
2538
2639
2740
2840
2941
3042

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 77% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1623251
2643141
3653140
4663040
5673030
6682930
7682930
8692830
9702730
10712630
11712630
12732430
13752320
14762220
15772120
16782020
17791920
18811810
19821710
20821710
21831610
22841600
23851500
24851500
25861400
26861400
27871300
28871300
29881200
30881200

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
414light breeze
514light 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 36 min at the start of September to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 132 minutes over September. Sunrise moves from 5:34 AM to 6:31 AM, and sunset from 7:10 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:347:10
213.55:367:07
313.45:387:04
413.45:407:02
513.35:426:59
613.25:446:57
713.15:466:54
813.15:486:51
913.05:506:49
1012.95:526:46
1112.85:546:43
1212.75:566:41
1312.75:586:38
1412.66:006:35
1512.56:016:33
1612.46:036:30
1712.46:056:27
1812.36:076:25
1912.26:096:22
2012.16:116:19
2112.16:136:17
2212.06:156:14
2311.96:176:11
2411.86:196:09
2511.76:216:06
2611.76:236:03
2711.66:256:01
2811.56:275:58
2911.46:295:55
3011.46:315:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.79 kWh/m².

For context, solar energy here swings from a low near 0.4 kWh/m² to a high of 5.59 kWh/m² in June across the year — September's 2.79 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.4Moderate
43.4Moderate
53.3Moderate
63.3Moderate
73.2Moderate
83.2Moderate
93.1Moderate
103.1Moderate
113.0Moderate
123.0Moderate
132.9Moderate
142.9Moderate
152.8Moderate
162.8Moderate
172.7Moderate
182.7Moderate
192.6Moderate
202.6Moderate
212.5Moderate
222.5Moderate
232.4Moderate
242.4Moderate
252.3Moderate
262.3Moderate
272.3Moderate
282.2Moderate
292.2Moderate
302.1Moderate
Planning a trip in September

Is September a good time to visit Aabenraa?

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 Aabenraa for sightseeing.

What to pack for Aabenraa in September

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

In September, Aabenraa sees daytime highs around 17°C and nights near 11°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Aabenraa in September

The nearest coast averages about 16°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 30 km away) is warmest in August at about 19°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°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan2Bracing
Feb2Bracing
Mar2Bracing
Apr4Bracing
May11Bracing
Jun15Cool
Jul18Cool
Aug19Cool
Sep16Cool
Oct12Bracing
Nov9Bracing
Dec4Bracing

UV index in Aabenraa 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 Aabenraa peaks around July 13 at about 6 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 13UV 6Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5Moderate
Jun6High
Jul6High
Aug5High
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Aabenraa?

Aabenraa sits at 55.0°N, 9.4°E, 16 m above sea level, in Denmark. The nearest listed city is Haderslev, 23 km away.

SønderborgFlensburgTønderKoldingMiddelfartSchleswigFredericia

Topography around Aabenraa

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

Within 3 km, the terrain around Aabenraa has only modest variations in elevation — a maximum elevation change of 90 m around an average of 32 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 99 m; within 80 km, only modest variations in elevation — a maximum elevation change of 146 m.

The land around Aabenraa is covered by trees (43%) within 3 km, cropland (42%) and grassland (22%) within 16 km, and cropland (34%) and water (33%) within 80 km.

3 km
90 m
16 km
99 m
80 km
146 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Haderslev 23 km · Sønderborg 28 km · Flensburg 29 km · Tønder 37 km · Kolding 50 km · Middelfart 55 km · Schleswig 59 km · Fredericia 62 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 Aabenraa (55.0443°, 9.4174°, elevation 16 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).