Vernon weather in August

In August, Vernon sees average daytime highs of 24°C and overnight lows near 14°C, with 56 mm of rain across 9.2 wet days and about 14.2 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 21% of the time in August, and the air most often feels dry.

Daylight stretches from about 15 hours at the start of August to 13 h 18 min by month's end. Set against the rest of the year, August is Vernon's 1st-clearest and 12th-windiest month. For the whole year in context, see Vernon's year-round climate.

Daytime high
24°
2nd warmest
Overnight low
14°
11th coldest
Rainfall
56 mm
9.2 wet days
Daylight
14 h 12 min
5:52 AM – 8:04 PM
Cloud cover
62%
1st clearest
Wind
11 km/h
12th windiest
Solar energy
4.69 kWh/m²
Travel score
6.9
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 22°C by the end.

A typical August day in Vernon 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 29°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12514
22514
32514
42514
52514
62514
72414
82414
92414
102414
112414
122414
132414
142414
152414
162414
172414
182414
192414
202314
212314
222313
232313
242313
252313
262313
272313
282213
292213
302213
312212

How August really feels in Vernon

Once humidity and wind are folded in, August 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

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

Vernon weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 5311.10.98.50.8
Feb / 46101.19.81.2
Mar11° / 5110.50.411.62.8
Apr15° / 5111013.44.2
May18° / 6211.50155.4
Jun21° / 12°5810.2015.96.3
Jul24° / 14°509.1015.67.0
Aug24° / 14°569.2014.26.9
Sep20° / 11°448.5012.46.4
Oct16° / 6210.9010.54.6
Nov10° / 5911.20.28.92.3
Dec / 6812.40.98.11.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24357
34357
44357
54357
64357
74357
84357
94357
104357
114258
124258
134159
144159
154159
164159
174159
184060
194060
204060
213961
223961
233862
243862
253862
263862
273862
283961
293961
303961
313862

Chance of precipitation in August

Any precipitation

Vernon gets around 56 mm of rain over 9.2 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
630
731
831
931
1031
1131
1231
1331
1431
1530
1630
1730
1830
1930
2030
2130
2230
2329
2429
2529
2628
2728
2828
2927
3027
3127

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August 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 (%)
13842182
23842182
33942182
43941172
53941172
64040172
74040172
84140172
94140172
104139172
114239172
124239172
134239172
144239172
154339162
164339162
174339161
184439161
194438161
204538161
214637151
224736151
234935151
245134141
255233141
265432131
275432131
285631121
295730121
305830111
315929111

Wind in August

Winds average 11 km/h in August, the calmest month.

Across August, 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
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 hours at the start of August to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 102 minutes over August. Sunrise moves from 5:31 AM to 6:14 AM, and sunset from 8:30 PM to 7:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.05:318:30
214.95:328:28
314.95:348:27
414.85:358:25
514.85:368:23
614.75:388:22
714.75:398:20
814.65:418:19
914.65:428:17
1014.55:438:15
1114.55:458:13
1214.45:468:12
1314.45:488:10
1414.35:498:08
1514.35:518:06
1614.25:528:04
1714.25:548:03
1814.15:558:01
1914.05:567:59
2014.05:587:57
2113.95:597:55
2213.96:017:53
2313.86:027:51
2413.86:047:49
2513.76:057:47
2613.66:077:45
2713.66:087:43
2813.56:107:41
2913.56:117:38
3013.46:137:36
3113.36:147:34

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.69 kWh/m².

For context, solar energy here swings from a low near 0.78 kWh/m² to a high of 5.54 kWh/m² in June across the year — August's 4.69 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.1Bright
45.1Bright
55.1Bright
65.0Bright
75.0Bright
85.0Bright
94.9Bright
104.9Bright
114.9Bright
124.8Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.5Bright
214.5Bright
224.5Bright
234.4Bright
244.4Bright
254.3Bright
264.3Bright
274.2Bright
284.2Bright
294.2Bright
304.1Bright
314.1Bright
Planning a trip in August

Is August a good time to visit Vernon?

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

6.9
Sightseeing
2nd-best month of the year
5.7
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Vernon for sightseeing.

What to pack for Vernon in August

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

In August, Vernon 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 Vernon in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Vernon peaks around August 11 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 11UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May6High
Jun7High
Jul7High
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Vernon in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Vernon is worst in April — around 18 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateApr 1018 µg/m³Jul 2012 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb15Moderate
Mar18Moderate
Apr18Moderate
May15Moderate
Jun14Moderate
Jul12Good
Aug13Moderate
Sep13Moderate
Oct13Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Vernon?

Vernon sits at 49.1°N, 1.5°E, 29 m above sea level, in France. The nearest listed city is Mantes-la-Jolie, 22 km away.

Topography around Vernon

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

Within 3 km, the terrain around Vernon has only modest variations in elevation — a maximum elevation change of 161 m around an average of 80 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 177 m; within 80 km, significant variations in elevation — a maximum elevation change of 324 m.

The land around Vernon is covered by trees (53%) within 3 km, cropland (45%) and trees (36%) within 16 km, and cropland (50%) and trees (30%) within 80 km.

3 km
161 m
16 km
177 m
80 km
324 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Mantes-la-Jolie 22 km · Mantes-la-Ville 22 km · Limay 23 km · Évreux 24 km · Louviers 26 km · Les Mureaux 34 km · Verneuil-sur-Seine 39 km · Elbeuf 40 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 Vernon (49.0929°, 1.4633°, 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).