Ahrensburg weather in September

In September, Ahrensburg sees average daytime highs of 18°C and overnight lows near 10°C, with 55 mm of rain across 10.1 wet days and about 12.5 hours of daylight. It is the 4th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 16°C by the end. The sky is clear or mostly clear about 17% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Ahrensburg's 6th-clearest and 8th-windiest month. For the whole year in context, see Ahrensburg's year-round climate.

Daytime high
18°
4th warmest
Overnight low
10°
9th coldest
Rainfall
55 mm
10.1 wet days
Daylight
12 h 24 min
6:01 AM – 6:26 PM
Cloud cover
68%
6th clearest
Wind
13 km/h
8th windiest
Solar energy
2.88 kWh/m²
Travel score
5.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 16°C by the end.

A typical September day in Ahrensburg reaches about 18°C in the afternoon and slips back to 10°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 23°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)
12012
22012
32012
42011
52011
61911
71911
81911
91911
101911
111911
121911
131811
141810
151810
161810
171810
181810
191810
201710
211710
221710
23179
24179
25179
26169
27169
28169
29169
30169

How September really feels in Ahrensburg

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.

Ahrensburg weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°6212.437.80.0
Feb / -1°4910.23.69.40.0
Mar / 5310.72.211.51.2
Apr13° / 4610.20.413.73.5
May17° / 6311.3015.65.3
Jun20° / 11°7112.5016.75.7
Jul22° / 13°8213.2016.36.1
Aug22° / 13°7812.9014.66.1
Sep18° / 10°5510.1012.55.6
Oct13° / 5711.5010.33.4
Nov / 5211.50.78.31.0
Dec / 6312.22.97.30.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23862
33862
43763
53763
63763
73664
83664
93763
103664
113664
123565
133565
143565
153565
163565
173565
183565
193565
203466
213466
223466
233367
243367
253367
263268
273268
283268
293169
303169

Chance of precipitation in September

Any precipitation

Ahrensburg gets around 55 mm of rain over 10.1 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 34% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
140
239
338
438
537
637
736
836
935
1035
1134
1234
1333
1433
1532
1632
1732
1831
1931
2032
2132
2232
2332
2433
2533
2634
2735
2835
2936
3036

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 81% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
167276
268275
370264
470264
571254
673243
773243
874233
976222
1076222
1177212
1278202
1380182
1481172
1583161
1684151
1785141
1886131
1987121
2087121
2189110
2289110
2389110
2489110
2590100
2690100
2790100
2890100
2990100
309190

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 30 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 126 minutes over September. Sunrise moves from 5:34 AM to 6:26 AM, and sunset from 7:04 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:347:04
213.45:357:01
313.45:376:59
413.35:396:56
513.25:416:54
613.15:436:51
713.15:446:49
813.05:466:46
912.95:486:44
1012.95:506:41
1112.85:526:39
1212.75:536:36
1312.65:556:34
1412.65:576:31
1512.55:596:29
1612.46:016:26
1712.36:036:23
1812.36:046:21
1912.26:066:18
2012.16:086:16
2112.16:106:13
2212.06:126:11
2311.96:146:08
2411.86:156:05
2511.86:176:03
2611.76:196:00
2711.66:215:58
2811.56:235:55
2911.56:255:53
3011.46:265:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.88 kWh/m².

For context, solar energy here swings from a low near 0.45 kWh/m² to a high of 5.35 kWh/m² in June across the year — September's 2.88 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.4Moderate
43.4Moderate
53.3Moderate
63.3Moderate
73.3Moderate
83.2Moderate
93.2Moderate
103.1Moderate
113.1Moderate
123.0Moderate
133.0Moderate
143.0Moderate
152.9Moderate
162.9Moderate
172.8Moderate
182.8Moderate
192.7Moderate
202.7Moderate
212.6Moderate
222.6Moderate
232.5Moderate
242.5Moderate
252.4Moderate
262.4Moderate
272.3Moderate
282.3Moderate
292.3Moderate
302.2Moderate
Planning a trip in September

Is September a good time to visit Ahrensburg?

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

5.6
Sightseeing
4th-best month of the year
1.9
Beach & pool
4th-best month of the year

September is a reasonable time to visit Ahrensburg for sightseeing.

What to pack for Ahrensburg in September

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

In September, Ahrensburg sees daytime highs around 18°C and nights near 10°C. Worth packing: rain gear. About 10 days see rain.

rain gear

Sea temperature near Ahrensburg 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 65 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
Jan3Bracing
Feb2Bracing
Mar3Bracing
Apr5Bracing
May11Bracing
Jun15Cool
Jul18Cool
Aug19Cool
Sep16Cool
Oct12Bracing
Nov9Bracing
Dec4Bracing

UV index in Ahrensburg 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 Ahrensburg peaks around July 12 at about 6 (high) — a little sun protection helps at midday. It bottoms out near December 21 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 12UV 6Dec 21UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May5High
Jun6High
Jul6High
Aug5Moderate
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Ahrensburg?

Ahrensburg sits at 53.7°N, 10.2°E, 42 m above sea level, in Germany. The nearest listed city is Volksdorf, 5.0 km away.

Topography around Ahrensburg

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

Within 3 km, the terrain around Ahrensburg has only modest variations in elevation — a maximum elevation change of 53 m around an average of 47 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 112 m; within 80 km, significant variations in elevation — a maximum elevation change of 268 m.

The land around Ahrensburg is covered by trees (53%) and cropland (20%) within 3 km, trees (45%), cropland (26%) and grassland (20%) within 16 km, and cropland (36%), trees (31%) and grassland (23%) within 80 km.

3 km
53 m
16 km
112 m
80 km
268 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Volksdorf 5.0 km · Sasel 9.0 km · Rahlstedt 10 km · Poppenbüttel 10 km · Farmsen-Berne 11 km · Hummelsbüttel 13 km · Steilshoop 14 km · Wandsbek 15 km

Germany travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 80% of US
price level, 2025
GDP per capita
$60,496
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.9
per 100k, 2023
Road deaths
3.8
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 615
Religion
none 44%Roman Catholic 25%Protestant 23%other 5%

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 Ahrensburg (53.6766°, 10.237°, elevation 42 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).