Étampes weather in September

In September, Étampes sees average daytime highs of 21°C and overnight lows near 11°C, with 47 mm of rain across 8.1 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 19°C by the end. The sky is clear or mostly clear about 23% 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 Étampes's 3rd-clearest and 9th-windiest month. For the whole year in context, see Étampes's year-round climate.

Daytime high
21°
4th warmest
Overnight low
11°
9th coldest
Rainfall
47 mm
8.1 wet days
Daylight
12 h 18 min
6:35 AM – 6:56 PM
Cloud cover
63%
3rd clearest
Wind
12 km/h
9th windiest
Solar energy
3.51 kWh/m²
Travel score
6.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 19°C by the end.

A typical September day in Étampes reaches about 21°C in the afternoon and slips back to 11°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 26°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)
12313
22313
32313
42212
52212
62212
72212
82212
92212
102212
112112
122112
132111
142111
152111
162111
172111
182111
192011
202011
212011
222011
232011
242010
252010
261910
271910
281910
291910
301910

How September really feels in Étampes

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.

Étampes weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 5111.10.98.60.8
Feb / 479.71.39.91.3
Mar12° / 4910.50.411.63.1
Apr15° / 489.9013.44.5
May19° / 6411.20155.7
Jun22° / 13°539.9015.86.5
Jul25° / 15°528.8015.57.0
Aug25° / 14°538.5014.17.1
Sep21° / 11°478.1012.46.6
Oct16° / 6111010.64.7
Nov11° / 5911.50.292.3
Dec / 6612.30.98.21.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% 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 62%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24159
34159
44159
54159
64159
74060
84060
93961
103961
113961
124060
133961
143961
153961
163862
173862
183862
193763
203763
213763
223763
233664
243565
253565
263466
273367
283268
293268
303169

Chance of precipitation in September

Any precipitation

Étampes gets around 47 mm of rain over 8.1 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 28% and peaks near 34% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
123
223
323
424
524
624
725
825
926
1026
1127
1227
1327
1428
1528
1628
1728
1829
1929
2029
2129
2229
2330
2430
2531
2632
2732
2833
2934
3034

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 (%)
1612712
2622711
3642610
4642610
565269
666268
766268
867267
967267
1069256
1169256
1270246
1371245
1472235
1573234
1674224
1774224
1876213
1976213
2077203
2177203
2278202
2378202
2478202
2578202
2678202
2778202
2878202
2978202
3079192

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

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 6:14 AM to 6:56 AM, and sunset from 7:28 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.26:147:28
213.26:157:26
313.16:177:24
413.16:187:22
513.06:197:20
613.06:217:18
712.96:227:16
812.86:247:14
912.86:257:11
1012.76:277:09
1112.76:287:07
1212.66:297:05
1312.56:317:03
1412.56:327:01
1512.46:346:58
1612.36:356:56
1712.36:376:54
1812.26:386:52
1912.26:406:50
2012.16:416:47
2112.06:426:45
2212.06:446:43
2311.96:456:41
2411.96:476:39
2511.86:486:36
2611.76:506:34
2711.76:516:32
2811.66:536:30
2911.66:546:28
3011.56:566:26

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.51 kWh/m².

For context, solar energy here swings from a low near 0.8 kWh/m² to a high of 5.63 kWh/m² in June across the year — September's 3.51 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.2Bright
24.1Bright
34.1Bright
44.0Bright
54.0Moderate
63.9Moderate
73.9Moderate
83.8Moderate
93.8Moderate
103.8Moderate
113.7Moderate
123.7Moderate
133.6Moderate
143.6Moderate
153.5Moderate
163.5Moderate
173.5Moderate
183.4Moderate
193.4Moderate
203.3Moderate
213.3Moderate
223.2Moderate
233.2Moderate
243.1Moderate
253.0Moderate
263.0Moderate
272.9Moderate
282.9Moderate
292.8Moderate
302.8Moderate
Planning a trip in September

Is September a good time to visit Étampes?

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

6.6
Sightseeing
3rd-best month of the year
3.9
Beach & pool
4th-best month of the year

September is a reasonable time to visit Étampes for sightseeing.

What to pack for Étampes in September

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

In September, Étampes sees daytime highs around 21°C and nights near 11°C. Worth packing: rain gear. About 8 days see rain.

rain gear

UV index in Étampes 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 Étampes peaks around August 10 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 10UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May6High
Jun7High
Jul7High
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Étampes 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 Étampes is worst in April — around 20 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1020 µg/m³Jul 2014 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb17Moderate
Mar20Moderate
Apr20Moderate
May17Moderate
Jun16Moderate
Jul13Moderate
Aug14Moderate
Sep15Moderate
Oct15Moderate
Nov15Moderate
Dec15Moderate
Location & terrain

Where is Étampes?

Étampes sits at 48.4°N, 2.2°E, 78 m above sea level, in France. The nearest listed city is Brétigny-sur-Orge, 22 km away.

Topography around Étampes

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

Within 3 km, the terrain around Étampes has only modest variations in elevation — a maximum elevation change of 89 m around an average of 109 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 128 m; within 80 km, significant variations in elevation — a maximum elevation change of 288 m.

The land around Étampes is covered by trees (38%) and cropland (34%) within 3 km, cropland (63%) and trees (28%) within 16 km, and cropland (55%) and trees (31%) within 80 km.

3 km
89 m
16 km
128 m
80 km
288 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Brétigny-sur-Orge 22 km · Saint-Michel-sur-Orge 25 km · Sainte-Geneviève-des-Bois 26 km · Les Ulis 27 km · Gif-sur-Yvette 28 km · Morsang-sur-Orge 29 km · Orsay 29 km · Grigny 30 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 Étampes (48.4351°, 2.1623°, elevation 78 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).