Valenciennes weather in September

In September, Valenciennes sees average daytime highs of 19°C and overnight lows near 11°C, with 50 mm of rain across 9.5 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 12th-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 18% 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 Valenciennes's 3rd-clearest and 9th-windiest month. For the whole year in context, see Valenciennes's year-round climate.

Daytime high
19°
4th warmest
Overnight low
11°
9th coldest
Rainfall
50 mm
9.5 wet days
Daylight
12 h 24 min
6:29 AM – 6:51 PM
Cloud cover
66%
3rd clearest
Wind
13 km/h
9th windiest
Solar energy
3.24 kWh/m²
Travel score
6.0
out of 10
Air quality
Moderate
PM2.5 12.4 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 Valenciennes reaches about 19°C in the afternoon and slips back to 11°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 24°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12112
22112
32112
42112
52012
62012
72012
82012
92012
102012
112012
122011
132011
142011
151911
161911
171911
181911
191911
201911
211911
221911
231811
241810
251810
261810
271810
281810
291710
301710

How September really feels in Valenciennes

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.

Valenciennes weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6412.118.30.5
Feb / 5710.91.59.70.9
Mar11° / 5711.60.711.52.4
Apr14° / 5211.60.113.53.9
May18° / 6712.6015.25.2
Jun20° / 12°6311.3016.16.0
Jul23° / 14°6511.2015.76.5
Aug23° / 14°7011.2014.36.5
Sep19° / 11°509.5012.46.0
Oct15° / 6111.1010.54.2
Nov10° / 6411.90.48.82.0
Dec / 7713.51.17.90.7

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 15% of September, with mostly cloudy or overcast conditions the remaining 66%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23664
33664
43664
53565
63565
73466
83466
93466
103367
113367
123367
133466
143466
153565
163466
173466
183565
193565
203466
213466
223466
233367
243367
253367
263367
273367
283169
293070
303070

Chance of precipitation in September

Any precipitation

Valenciennes gets around 50 mm of rain over 9.5 wet days in September, the driest month. 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 (%)
131
231
330
430
530
630
730
830
931
1031
1131
1231
1331
1431
1531
1631
1732
1832
1932
2033
2133
2233
2334
2434
2534
2635
2736
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 72% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15929111
26129100
36228100
4632890
5642790
6652780
7652780
8662680
9662680
10682570
11692470
12702460
13712360
14722260
15742150
16742150
17762040
18762040
19781930
20781930
21781930
22791920
23782020
24782020
25792010
26792010
27792010
28792010
29792010
30801910

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 14 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
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light 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 6:06 AM to 6:51 AM, and sunset from 7:26 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.36:067:26
213.36:077:23
313.26:097:21
413.16:107:19
513.16:127:17
613.06:137:14
713.06:157:12
812.96:167:10
912.86:187:08
1012.86:207:05
1112.76:217:03
1212.66:237:01
1312.66:246:58
1412.56:266:56
1512.46:276:54
1612.46:296:51
1712.36:316:49
1812.26:326:47
1912.26:346:44
2012.16:356:42
2112.06:376:40
2212.06:386:38
2311.96:406:35
2411.96:426:33
2511.86:436:31
2611.76:456:28
2711.76:466:26
2811.66:486:24
2911.56:506:21
3011.56:516:19

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.24 kWh/m².

For context, solar energy here swings from a low near 0.68 kWh/m² to a high of 5.41 kWh/m² in June across the year — September's 3.24 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.7Moderate
43.7Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.5Moderate
93.5Moderate
103.5Moderate
113.4Moderate
123.4Moderate
133.4Moderate
143.3Moderate
153.3Moderate
163.3Moderate
173.2Moderate
183.2Moderate
193.1Moderate
203.1Moderate
213.0Moderate
223.0Moderate
232.9Moderate
242.9Moderate
252.8Moderate
262.8Moderate
272.7Moderate
282.6Moderate
292.6Moderate
302.5Moderate
Planning a trip in September

Is September a good time to visit Valenciennes?

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

6.0
Sightseeing
3rd-best month of the year
2.7
Beach & pool
4th-best month of the year

September is a reasonable time to visit Valenciennes for sightseeing.

What to pack for Valenciennes in September

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

In September, Valenciennes sees daytime highs around 19°C and nights near 11°C. Worth packing: rain gear. About 10 days see rain.

rain gear

UV index in Valenciennes 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 Valenciennes peaks around July 13 at about 7 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 13UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun7High
Jul7High
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Valenciennes 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 Valenciennes is worst in April — around 16 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (December, 10 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Valenciennes's WHO annual average of 12.4 µg/m³.

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodApr 1316 µg/m³Dec 1010 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb12Good
Mar15Moderate
Apr16Moderate
May14Moderate
Jun14Moderate
Jul12Good
Aug13Moderate
Sep12Moderate
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Valenciennes?

Valenciennes sits at 50.4°N, 3.5°E, 29 m above sea level, in France. The nearest listed city is Denain, 10 km away.

Topography around Valenciennes

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

Within 3 km, the terrain around Valenciennes has only modest variations in elevation — a maximum elevation change of 60 m around an average of 39 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 138 m; within 80 km, significant variations in elevation — a maximum elevation change of 501 m.

The land around Valenciennes is covered by artificial surfaces (49%) and trees (31%) within 3 km, cropland (41%) and trees (28%) within 16 km, and cropland (53%) and trees (20%) within 80 km.

3 km
60 m
16 km
138 m
80 km
501 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Denain 10 km · Saint-Amand-les-Eaux 12 km · Péruwelz 17 km · Dour 18 km · Boussu 21 km · Saint-Ghislain 23 km · Colfontaine 24 km · Quaregnon 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 Valenciennes (50.3591°, 3.5251°, elevation 29 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).