Pont-à-Mousson weather in September

In September, Pont-à-Mousson sees average daytime highs of 20°C and overnight lows near 11°C, with 64 mm of rain across 9.4 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 18°C by the end. The sky is clear or mostly clear about 25% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Pont-à-Mousson's 3rd-clearest and 9th-windiest month. For the whole year in context, see Pont-à-Mousson's year-round climate.

Daytime high
20°
4th warmest
Overnight low
11°
9th coldest
Rainfall
64 mm
9.4 wet days
Daylight
12 h 24 min
6:19 AM – 6:41 PM
Cloud cover
62%
3rd clearest
Wind
12 km/h
9th windiest
Solar energy
3.37 kWh/m²
Travel score
6.2
out of 10
Air quality
Good
PM10 17.6 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 21°C in the first days to 18°C by the end.

A typical September day in Pont-à-Mousson reaches about 20°C in the afternoon and slips back to 11°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 25°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12212
22212
32112
42112
52112
62112
72112
82112
92111
102011
112011
122011
132011
142011
152011
162011
172010
181910
191910
201910
211910
221910
231910
241810
251810
261810
271810
281810
29189
30179

How September really feels in Pont-à-Mousson

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.

Pont-à-Mousson weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6611.92.28.50.0
Feb / 5610.62.49.80.5
Mar10° / 5911.71.111.62.4
Apr15° / 54110.113.44.2
May19° / 6912.60155.5
Jun22° / 12°6010.4015.96.4
Jul24° / 14°5710.4015.56.9
Aug24° / 14°6210.7014.26.8
Sep20° / 11°649.4012.46.2
Oct14° / 6611.3010.54.0
Nov / 6912.10.88.91.5
Dec / 82142.58.10.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14060
24159
34159
44159
54159
64159
74258
84159
94159
104159
114159
124258
134159
144159
154159
164159
174060
184159
194159
204159
214060
224060
233961
243862
253763
263763
273565
283466
293268
303268

Chance of precipitation in September

Any precipitation

Pont-à-Mousson gets around 64 mm of rain over 9.4 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 32% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
130
230
330
430
530
630
731
831
931
1031
1132
1232
1332
1432
1532
1632
1733
1833
1933
2032
2132
2233
2333
2433
2534
2634
2735
2836
2937
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 77% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
166259
266259
368248
469247
569247
670246
771236
872235
972235
1073234
1173234
1274224
1376213
1476213
1577203
1678193
1779192
1880182
1980182
2081172
2182162
2283161
2383161
2484151
2584151
2684151
2784151
2885141
2985141
3085141

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812light breeze
2912light breeze
3012light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 18 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 108 minutes over September. Sunrise moves from 5:57 AM to 6:40 AM, and sunset from 7:14 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:577:14
213.25:597:11
313.16:007:09
413.16:027:07
513.06:037:05
613.06:057:03
712.96:067:01
812.86:086:58
912.86:096:56
1012.76:116:54
1112.76:126:52
1212.66:146:50
1312.56:156:47
1412.56:176:45
1512.46:186:43
1612.46:196:41
1712.36:216:39
1812.26:226:36
1912.26:246:34
2012.16:256:32
2112.06:276:30
2212.06:286:27
2311.96:306:25
2411.96:316:23
2511.86:336:21
2611.76:346:19
2711.76:366:16
2811.66:376:14
2911.66:396:12
3011.56:406:10

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.37 kWh/m².

For context, solar energy here swings from a low near 0.72 kWh/m² to a high of 5.68 kWh/m² in June across the year — September's 3.37 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
14.0Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.8Moderate
63.8Moderate
73.7Moderate
83.7Moderate
93.6Moderate
103.6Moderate
113.6Moderate
123.5Moderate
133.5Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.3Moderate
183.3Moderate
193.2Moderate
203.2Moderate
213.1Moderate
223.1Moderate
233.0Moderate
243.0Moderate
252.9Moderate
262.9Moderate
272.8Moderate
282.7Moderate
292.7Moderate
302.6Moderate
Planning a trip in September

Is September a good time to visit Pont-à-Mousson?

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

6.2
Sightseeing
4th-best month of the year
3.0
Beach & pool
4th-best month of the year

September is a reasonable time to visit Pont-à-Mousson for sightseeing.

What to pack for Pont-à-Mousson in September

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

In September, Pont-à-Mousson sees daytime highs around 20°C and nights near 11°C. Worth packing: rain gear. About 9 days see rain.

rain gear

UV index in Pont-à-Mousson 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 Pont-à-Mousson peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr4Moderate
May6High
Jun7High
Jul8Very high
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Pont-à-Mousson in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Pont-à-Mousson is worst in April — around 15 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1315 µg/m³Dec 109 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar14Moderate
Apr15Moderate
May13Moderate
Jun14Moderate
Jul11Good
Aug11Good
Sep11Good
Oct10Good
Nov9Good
Dec9Good
Location & terrain

Where is Pont-à-Mousson?

Pont-à-Mousson sits at 48.9°N, 6.1°E, 180 m above sea level, in France. The nearest listed city is Montigny-lès-Metz, 22 km away.

Topography around Pont-à-Mousson

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Pont-à-Mousson.

Within 3 km, the terrain around Pont-à-Mousson has only modest variations in elevation — a maximum elevation change of 219 m around an average of 222 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 250 m; within 80 km, significant variations in elevation — a maximum elevation change of 397 m.

The land around Pont-à-Mousson is covered by trees (39%) and grassland (23%) within 3 km, trees (39%) and cropland (38%) within 16 km, and trees (39%), cropland (35%) and grassland (21%) within 80 km.

3 km
219 m
16 km
250 m
80 km
397 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Montigny-lès-Metz 22 km · Metz 25 km · Laxou 26 km · Nancy 26 km · Villers-lès-Nancy 27 km · Toul 28 km · Vandœuvre-lès-Nancy 29 km · Hayange 47 km

France travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 77% of US
price level, 2025
GDP per capita
$48,986
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.3
per 100k, 2023
Road deaths
5.1
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 539
Religion
Roman Catholic 47%none 33%Muslim 4%Protestant 2%

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 Pont-à-Mousson (48.907°, 6.0564°, elevation 180 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).