Saint-Avold weather in September

In September, Saint-Avold sees average daytime highs of 20°C and overnight lows near 11°C, with 70 mm of rain across 9.7 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 22°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 Saint-Avold's 3rd-clearest and 9th-windiest month. For the whole year in context, see Saint-Avold's year-round climate.

Daytime high
20°
4th warmest
Overnight low
11°
9th coldest
Rainfall
70 mm
9.7 wet days
Daylight
12 h 24 min
6:17 AM – 6:38 PM
Cloud cover
61%
3rd clearest
Wind
12 km/h
9th windiest
Solar energy
3.36 kWh/m²
Travel score
6.1
out of 10
Air quality
Good
PM10 21 µg/m³ · 2010

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 22°C in the first days to 18°C by the end.

A typical September day in Saint-Avold 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 26°C. Set against its neighbours, September runs about 5°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12213
22212
32212
42212
52112
62112
72112
82112
92112
102111
112011
122011
132011
142011
152011
162011
172011
181910
191910
201910
211910
221910
231910
241810
251810
261810
271810
281810
291710
30179

How September really feels in Saint-Avold

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.

Saint-Avold weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7812.938.50.0
Feb / 66112.89.80.4
Mar10° / 7111.91.411.62.3
Apr15° / 5810.90.113.44.2
May19° / 7412.70155.5
Jun22° / 13°6711.4015.96.4
Jul25° / 15°6711.7015.66.7
Aug24° / 14°6511.5014.26.7
Sep20° / 11°709.7012.46.1
Oct14° / 7511.8010.54.0
Nov / 7812.70.88.91.4
Dec / 9814.438.10.1

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 59%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14357
24357
34357
44357
54357
64357
74258
84357
94357
104357
114357
124258
134357
144357
154357
164357
174258
184258
194258
204357
214159
224159
234060
243961
253961
263664
273565
283565
293367
303169

Chance of precipitation in September

Any precipitation

Saint-Avold gets around 70 mm of rain over 9.7 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. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
132
231
331
431
531
631
732
832
933
1033
1133
1234
1334
1434
1534
1634
1734
1834
1934
2034
2134
2234
2334
2435
2535
2636
2737
2838
2939
3040

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 78% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
166268
268257
368257
470246
570246
672235
772235
873225
974224
1074224
1175214
1276213
1377203
1477203
1578193
1679183
1780182
1881172
1981172
2081172
2183161
2283161
2384151
2484151
2584151
2684151
2785141
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
211calm
311calm
411calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
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 5:55 AM to 6:38 AM, and sunset from 7:11 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:557:11
213.25:567:09
313.25:587:07
413.15:597:05
513.06:017:03
613.06:027:00
712.96:036:58
812.96:056:56
912.86:066:54
1012.76:086:52
1112.76:096:49
1212.66:116:47
1312.56:126:45
1412.56:146:43
1512.46:156:40
1612.46:176:38
1712.36:186:36
1812.26:206:34
1912.26:216:32
2012.16:236:29
2112.06:246:27
2212.06:266:25
2311.96:276:23
2411.96:296:20
2511.86:306:18
2611.76:326:16
2711.76:336:14
2811.66:356:12
2911.66:366:09
3011.56:386:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.36 kWh/m².

For context, solar energy here swings from a low near 0.73 kWh/m² to a high of 5.67 kWh/m² in June across the year — September's 3.36 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
14.0Moderate
23.9Moderate
33.9Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.7Moderate
83.7Moderate
93.6Moderate
103.6Moderate
113.5Moderate
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 Saint-Avold?

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

6.1
Sightseeing
4th-best month of the year
3.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Saint-Avold for sightseeing.

What to pack for Saint-Avold in September

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

In September, Saint-Avold sees daytime highs around 20°C and nights near 11°C. Worth packing: rain gear. About 10 days see rain.

rain gear

UV index in Saint-Avold 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 Saint-Avold peaks around July 16 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 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 16UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr4Moderate
May6High
Jun7High
Jul8Very high
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Saint-Avold 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 Saint-Avold is worst in April — around 16 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodApr 1216 µg/m³Dec 1010 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb12Good
Mar16Moderate
Apr16Moderate
May14Moderate
Jun14Moderate
Jul12Good
Aug12Moderate
Sep12Good
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Saint-Avold?

Saint-Avold sits at 49.1°N, 6.7°E, 231 m above sea level, in France. The nearest listed city is Forbach, 17 km away.

Topography around Saint-Avold

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

Within 3 km, the terrain around Saint-Avold has only modest variations in elevation — a maximum elevation change of 181 m around an average of 279 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 240 m; within 80 km, large variations in elevation — a maximum elevation change of 883 m.

The land around Saint-Avold is covered by trees (52%) and artificial surfaces (20%) within 3 km, trees (41%), cropland (29%) and grassland (22%) within 16 km, and trees (47%), cropland (27%) and grassland (21%) within 80 km.

3 km
181 m
16 km
240 m
80 km
883 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Forbach 17 km · Wadgassen 19 km · Völklingen 20 km · Schwalbach 23 km · Saarlouis 24 km · Püttlingen 24 km · Saarbrücken 26 km · Sarreguemines 26 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 Saint-Avold (49.1046°, 6.704°, elevation 231 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).