Le Chesnay weather in July

In July, Le Chesnay sees average daytime highs of 24°C and overnight lows near 14°C, with 55 mm of rain across 9.1 wet days and about 15.5 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 25°C by the end. The sky is clear or mostly clear about 25% of the time in July, and the air most often feels dry.

Daylight stretches from about 15 h 54 min at the start of July to 15 hours by month's end. Set against the rest of the year, July is Le Chesnay's 2nd-clearest and 11th-windiest month. For the whole year in context, see Le Chesnay's year-round climate.

Daytime high
24°
1st warmest
Overnight low
14°
12th coldest
Rainfall
55 mm
9.1 wet days
Daylight
15 h 36 min
5:10 AM – 8:44 PM
Cloud cover
62%
2nd clearest
Wind
11 km/h
11th windiest
Solar energy
5.45 kWh/m²
Travel score
7.0
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 25°C by the end.

A typical July day in Le Chesnay reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 30°C. Set against its neighbours, July runs about 3°C warmer than June and on par with August.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12313
22314
32314
42314
52314
62314
72314
82314
92414
102414
112414
122414
132414
142414
152414
162414
172414
182414
192514
202514
212514
222514
232514
242515
252515
262515
272515
282515
292515
302515
312515

How July really feels in Le Chesnay

Once humidity and wind are folded in, July 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

July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Le Chesnay weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 5311.318.50.7
Feb / 47101.39.81.2
Mar12° / 5110.60.611.62.9
Apr15° / 5211013.44.3
May18° / 6711.60155.5
Jun22° / 12°6010.4015.96.4
Jul24° / 14°559.1015.57.0
Aug24° / 14°588.9014.27.0
Sep20° / 11°488.5012.46.4
Oct16° / 6311.2010.54.6
Nov10° / 5911.10.38.92.2
Dec / 6812.41.18.10.9

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 17% of July, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23664
33664
43763
53763
63763
73862
83961
94060
104060
114060
124159
134258
144258
154357
164456
174456
184456
194456
204555
214555
224555
234555
244555
254555
264555
274555
284555
294456
304456
314555

Chance of precipitation in July

Any precipitation

Le Chesnay gets around 55 mm of rain over 9.1 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
131
232
332
432
532
632
731
831
930
1030
1129
1229
1328
1428
1528
1628
1728
1828
1928
2028
2128
2228
2328
2428
2528
2628
2729
2829
2929
3029
3129

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the dry band about 45% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15134132
25035142
35035141
44935141
54936141
64936151
74936151
84935151
94935151
104935151
114935151
124935151
134935151
144835151
154835152
164735162
174635162
184536172
194536172
204436182
214337182
224237192
234138192
244038192
254039192
264039192
273939193
283940193
293840193
303840193
313840193

Wind in July

Winds average 11 km/h in July.

Across July, 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.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 15 h 54 min at the start of July to 15 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over July. Sunrise moves from 4:58 AM to 5:28 AM, and sunset from 8:52 PM to 8:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.94:588:52
215.94:588:52
315.94:598:52
415.94:598:51
515.85:008:51
615.85:018:51
715.85:028:50
815.85:028:50
915.85:038:49
1015.75:048:49
1115.75:058:48
1215.75:068:47
1315.75:078:47
1415.65:088:46
1515.65:098:45
1615.65:108:44
1715.55:118:44
1815.55:128:43
1915.55:138:42
2015.45:148:41
2115.45:158:40
2215.45:168:39
2315.35:188:38
2415.35:198:36
2515.35:208:35
2615.25:218:34
2715.25:238:33
2815.15:248:32
2915.15:258:30
3015.05:268:29
3115.05:288:27

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.45 kWh/m².

For context, solar energy here swings from a low near 0.79 kWh/m² to a high of 5.58 kWh/m² in June across the year — July's 5.45 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.3Bright
315.3Bright
Planning a trip in July

Is July a good time to visit Le Chesnay?

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

7.0
Sightseeing
1st-best month of the year
6.0
Beach & pool
1st-best month of the year

July is one of the better times to visit Le Chesnay for general sightseeing.

What to pack for Le Chesnay in July

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

In July, Le Chesnay sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Le Chesnay in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Le Chesnay peaks around June 22 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 22UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May6High
Jun7High
Jul7High
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Le Chesnay in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Le Chesnay 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 Le Chesnay?

Le Chesnay sits at 48.8°N, 2.1°E, 122 m above sea level, in France. The nearest listed city is Versailles, 2.0 km away.

Topography around Le Chesnay

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

Within 3 km, the terrain around Le Chesnay has only modest variations in elevation — a maximum elevation change of 99 m around an average of 141 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 221 m; within 80 km, significant variations in elevation — a maximum elevation change of 260 m.

The land around Le Chesnay is covered by trees (54%) and artificial surfaces (29%) within 3 km, trees (45%) and artificial surfaces (33%) within 16 km, and cropland (55%) and trees (31%) within 80 km.

3 km
99 m
16 km
221 m
80 km
260 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Versailles 2.0 km · La Celle-Saint-Cloud 4.0 km · Viroflay 4.0 km · Saint-Cyr-l'École 5.0 km · Garches 5.0 km · Chaville 5.0 km · Marly-le-Roi 6.0 km · Saint-Cloud 6.0 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 Le Chesnay (48.8222°, 2.1221°, elevation 122 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).