Kempten (Allgäu) weather in September

In September, Kempten (Allgäu) sees average daytime highs of 17°C and overnight lows near 9°C, with 117 mm of precipitation across 13.8 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 5th-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 28% 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 Kempten (Allgäu)'s 3rd-clearest and 11th-windiest month. For the whole year in context, see Kempten (Allgäu)'s year-round climate.

Daytime high
17°
4th warmest
Overnight low
9th coldest
Precipitation
117 mm
13.8 wet days
Daylight
12 h 18 min
6:03 AM – 6:23 PM
Cloud cover
61%
3rd clearest
Wind
8 km/h
11th windiest
Solar energy
3.5 kWh/m²
Travel score
4.9
out of 10

Kempten (Allgäu) is inner city of the urban municipality of Kempten, Bavaria, Germany.

Air quality
Good
PM2.5 8.8 µg/m³ · 2019

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 Kempten (Allgäu) reaches about 17°C in the afternoon and slips back to 9°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 22°C. Set against its neighbours, September runs about 4°C cooler than August and about 4°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11911
21910
31910
41810
51810
61810
71810
81810
91810
10189
11189
12179
13179
14179
15179
16179
17179
18178
19168
20168
21168
22168
23168
24168
25168
26168
27158
28158
29157
30157

How September really feels in Kempten (Allgäu)

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.

Kempten (Allgäu) 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 / -4°10413.29.88.70.0
Feb / -3°93129.39.90.0
Mar / -0°11215.28.311.61.2
Apr12° / 10514.84.413.32.9
May16° / 15717.70.714.94.3
Jun20° / 11°15817015.75.2
Jul22° / 13°15916.7015.45.7
Aug21° / 12°14915.1014.15.8
Sep17° / 11713.80.112.44.9
Oct12° / 96121.610.63.2
Nov / 10412.56.19.10.8
Dec / -2°11314.710.18.30.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% 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 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24753
34753
44753
54654
64654
74654
84654
94654
104555
114555
124555
134456
144456
154456
164456
174258
184258
194258
204258
214258
224159
234159
244060
254159
264060
274060
283961
293862
303763

Chance of precipitation in September

Any precipitation

Kempten (Allgäu) gets around 117 mm of rain and snow over 13.8 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 46% and peaks near 52% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
152
251
351
451
551
650
750
850
949
1048
1148
1247
1346
1446
1545
1644
1744
1844
1943
2043
2143
2243
2342
2443
2543
2643
2743
2844
2944
3045

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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
174251
276231
377221
479201
580191
681181
782171
883161
984151
1086140
1187130
1288120
1389110
1490100
1590100
169190
179280
189280
199370
209460
219460
229550
239640
249640
259730
269730
279730
289820
299820
309820

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 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
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
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 5:42 AM to 6:23 AM, and sunset from 6:55 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:426:55
213.25:436:53
313.15:456:51
413.05:466:49
513.05:486:47
612.95:496:45
712.95:506:42
812.85:526:40
912.85:536:38
1012.75:546:36
1112.65:566:34
1212.65:576:32
1312.55:596:30
1412.56:006:28
1512.46:016:25
1612.36:036:23
1712.36:046:21
1812.26:066:19
1912.26:076:17
2012.16:086:15
2112.06:106:13
2212.06:116:10
2311.96:136:08
2411.96:146:06
2511.86:166:04
2611.76:176:02
2711.76:186:00
2811.66:205:58
2911.66:215:56
3011.56:235:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.5 kWh/m².

For context, solar energy here swings from a low near 1.04 kWh/m² to a high of 5.4 kWh/m² in June across the year — September's 3.5 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.0Bright
34.0Moderate
44.0Moderate
53.9Moderate
63.9Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.7Moderate
113.7Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.5Moderate
163.5Moderate
173.4Moderate
183.4Moderate
193.4Moderate
203.3Moderate
213.3Moderate
223.2Moderate
233.2Moderate
243.1Moderate
253.1Moderate
263.1Moderate
273.0Moderate
283.0Moderate
292.9Moderate
302.9Moderate
Planning a trip in September

Is September a good time to visit Kempten (Allgäu)?

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

4.9
Sightseeing
4th-best month of the year
1.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Kempten (Allgäu) for sightseeing.

What to pack for Kempten (Allgäu) in September

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

In September, Kempten (Allgäu) sees daytime highs around 17°C and nights near 9°C. Pack rain gear. Worth having: a warm layer. About 14 days see rain.

rain geara warm layer

UV index in Kempten (Allgäu) 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 Kempten (Allgäu) 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowJul 15UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5High
May7High
Jun8Very high
Jul8Very high
Aug7Very high
Sep4Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Kempten (Allgäu)?

Kempten (Allgäu) sits at 47.7°N, 10.3°E, 681 m above sea level, in Germany. The nearest listed city is Sonthofen, 23 km away.

Topography around Kempten (Allgäu)

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kempten (Allgäu).

Within 3 km, the terrain around Kempten (Allgäu) has only modest variations in elevation — a maximum elevation change of 225 m around an average of 714 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 629 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,691 m.

The land around Kempten (Allgäu) is covered by grassland (36%), artificial surfaces (31%) and trees (30%) within 3 km, grassland (57%) and trees (36%) within 16 km, and trees (42%) and grassland (36%) within 80 km.

3 km
225 m
16 km
629 m
80 km
2,691 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Sonthofen 23 km · Marktoberdorf 23 km · Leutkirch 25 km · Kaufbeuren 29 km · Memmingen 30 km · Fussen 34 km · Wangen 36 km · Bad Waldsee 47 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 Kempten (Allgäu) (47.7267°, 10.3139°, elevation 681 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).