Rostock weather in September

In September, Rostock sees average daytime highs of 18°C and overnight lows near 11°C, with 55 mm of rain across 10.1 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 20°C in the first days to 16°C by the end. The sky is clear or mostly clear about 18% 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 Rostock's 6th-clearest and 8th-windiest month. For the whole year in context, see Rostock's year-round climate.

Daytime high
18°
4th warmest
Overnight low
11°
9th coldest
Rainfall
55 mm
10.1 wet days
Daylight
12 h 24 min
5:53 AM – 6:19 PM
Cloud cover
67%
6th clearest
Wind
14 km/h
8th windiest
Solar energy
3 kWh/m²
Travel score
5.6
out of 10
Air quality
Moderate
PM2.5 11.3 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 20°C in the first days to 16°C by the end.

A typical September day in Rostock reaches about 18°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 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
42012
51912
61912
71912
81911
91911
101911
111911
121911
131811
141811
151811
161810
171810
181810
191810
201710
211710
221710
231710
241710
25179
26169
27169
28169
29169
30169

How September really feels in Rostock

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.

Rostock 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°5011.63.27.70.0
Feb / -1°4110.33.69.40.0
Mar / 46102.211.51.1
Apr12° / 439.90.313.73.4
May17° / 5811.1015.75.3
Jun20° / 11°7111.5016.85.9
Jul22° / 14°7712.7016.46.3
Aug22° / 14°7412.5014.66.2
Sep18° / 11°5510.1012.55.6
Oct13° / 5110.70.110.23.3
Nov / 4410.30.88.31.0
Dec / 5111.53.17.20.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% 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 65%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14060
24060
34060
44060
53961
63961
73961
83862
93862
103862
113862
123763
133763
143664
153664
163565
173565
183466
193466
203466
213466
223268
233268
243268
253268
263169
273070
283070
293070
303070

Chance of precipitation in September

Any precipitation

Rostock 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 41% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
141
240
340
439
539
638
738
837
936
1035
1134
1233
1333
1432
1531
1631
1731
1830
1930
2030
2131
2231
2331
2432
2533
2633
2734
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 (%)
166277
268266
368266
470255
570255
672244
773234
873234
975223
1076213
1177203
1278193
1380182
1481172
1582162
1683152
1784142
1886131
1987121
2087121
2188111
2289110
2389110
2490100
2590100
2690100
2790100
2890100
2990100
3090100

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 14 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
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light 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 5:25 AM to 6:19 AM, and sunset from 6:57 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:256:57
213.55:276:55
313.45:296:52
413.35:316:49
513.25:336:47
613.25:346:44
713.15:366:42
813.05:386:39
912.95:406:37
1012.95:426:34
1112.85:446:32
1212.75:466:29
1312.65:476:26
1412.65:496:24
1512.55:516:21
1612.45:536:19
1712.45:556:16
1812.35:576:13
1912.25:596:11
2012.16:006:08
2112.16:026:06
2212.06:046:03
2311.96:066:00
2411.86:085:58
2511.86:105:55
2611.76:125:53
2711.66:135:50
2811.56:155:47
2911.56:175:45
3011.46:195:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3 kWh/m².

For context, solar energy here swings from a low near 0.46 kWh/m² to a high of 5.68 kWh/m² in June across the year — September's 3 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.7Moderate
23.6Moderate
33.6Moderate
43.5Moderate
53.5Moderate
63.5Moderate
73.4Moderate
83.4Moderate
93.3Moderate
103.3Moderate
113.2Moderate
123.2Moderate
133.1Moderate
143.1Moderate
153.0Moderate
163.0Moderate
172.9Moderate
182.9Moderate
192.8Moderate
202.8Moderate
212.7Moderate
222.7Moderate
232.6Moderate
242.6Moderate
252.5Moderate
262.5Moderate
272.4Moderate
282.4Moderate
292.3Moderate
302.3Moderate
Planning a trip in September

Is September a good time to visit Rostock?

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 Rostock for sightseeing.

What to pack for Rostock in September

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

In September, Rostock sees daytime highs around 18°C and nights near 11°C. Worth packing: rain gear. About 10 days see rain.

rain gear

Sea temperature near Rostock 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 32 km away) is warmest in August at about 18°C and coldest in February near 3°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
Feb3Bracing
Mar3Bracing
Apr6Bracing
May10Bracing
Jun14Bracing
Jul17Cool
Aug18Cool
Sep16Cool
Oct12Bracing
Nov9Bracing
Dec5Bracing

UV index in Rostock 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 Rostock peaks around June 18 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 18UV 6Dec 21UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May5High
Jun6High
Jul6High
Aug4Moderate
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Rostock?

Rostock sits at 54.1°N, 12.1°E, 18 m above sea level, in Germany. The nearest listed city is Kröpeliner-Tor-Vorstadt, 2.0 km away.

WismarStralsundSchwerinWarenParchim

Topography around Rostock

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

Within 3 km, the terrain around Rostock has only modest variations in elevation — a maximum elevation change of 55 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 131 m; within 80 km, only modest variations in elevation — a maximum elevation change of 174 m.

The land around Rostock is covered by trees (37%) and artificial surfaces (31%) within 3 km, cropland (39%), trees (24%) and grassland (20%) within 16 km, and water (37%) and cropland (34%) within 80 km.

3 km
55 m
16 km
131 m
80 km
174 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Kröpeliner-Tor-Vorstadt 2.0 km · Ribnitz-Damgarten 27 km · Güstrow 32 km · Wismar 50 km · Stralsund 66 km · Schwerin 70 km · Waren 73 km · Parchim 76 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 Rostock (54.0887°, 12.1405°, elevation 18 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).