Les Coteaux weather in August

In August, Les Coteaux sees average daytime highs of 25°C and overnight lows near 15°C, with 87 mm of rain across 10.9 wet days and about 13.9 hours of daylight. It is the 2nd-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 24°C by the end. The sky is clear or mostly clear about 30% of the time in August, and the air most often feels humid.

Daylight stretches from about 14 h 36 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Les Coteaux's 2nd-clearest and 12th-windiest month. For the whole year in context, see Les Coteaux's year-round climate.

Daytime high
25°
2nd warmest
Overnight low
15°
11th coldest
Rainfall
87 mm
10.9 wet days
Daylight
13 h 54 min
5:03 AM – 6:59 PM
Cloud cover
58%
2nd clearest
Wind
10 km/h
12th windiest
Solar energy
5.13 kWh/m²
Travel score
6.7
out of 10

Les Coteaux is municipality in Montérégie, Quebec, Canada.

Density
1,200/km²
people per km²
Founded
1994

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 24°C by the end.

A typical August day in Les Coteaux reaches about 25°C in the afternoon and slips back to 15°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 30°C. Set against its neighbours, August runs about 1°C cooler than July and about 4°C warmer than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12616
22616
32616
42616
52616
62616
72616
82616
92616
102616
112616
122616
132616
142616
152516
162515
172515
182515
192515
202515
212515
222515
232515
242515
252514
262414
272414
282414
292414
302414
312414

How August really feels in Les Coteaux

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.

Les Coteaux weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-4° / -13°7210.79.68.90.0
Feb-3° / -12°619.48.410.10.0
Mar / -6°7310.66.711.60.1
Apr12° / 10111.72.713.22.8
May19° / 9511.4014.65.7
Jun24° / 14°9711.6015.46.4
Jul26° / 16°8912.5015.16.3
Aug25° / 15°8710.9013.96.7
Sep21° / 11°8710.1012.36.4
Oct13° / 10511.60.510.73.6
Nov / -1°8311.73.49.30.6
Dec-1° / -8°8211.998.60.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35446
45446
55446
65446
75347
85248
95248
105248
115248
125248
135248
145149
155149
165149
175248
185248
195347
205248
215248
225347
235347
245347
255248
265248
275347
285347
295248
305248
315248

Chance of precipitation in August

Any precipitation

Les Coteaux gets around 87 mm of rain over 10.9 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 35% and peaks near 39% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
339
439
539
639
739
838
938
1038
1137
1237
1337
1436
1536
1635
1735
1834
1933
2033
2132
2231
2331
2430
2530
2630
2730
2830
2930
3030
3130

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1162635203
2162635193
3172635192
4172635192
5172735192
6172735192
7172735182
8182735182
9182734182
10192834182
11192833181
12202833171
13212833171
14212832171
15222832161
16232932161
17242932151
18252931151
19262930151
20272930141
21282929141
22292928141
23302927131
24312826131
25322826131
26332825131
27342824131
28352823121
29362822121
30372921121
31392920121

Wind in August

Winds average 10 km/h in August, the calmest month.

Across August, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 36 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over August. Sunrise moves from 4:45 AM to 5:22 AM, and sunset from 7:21 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:457:21
214.54:467:19
314.54:487:18
414.54:497:17
514.44:507:15
614.44:517:14
714.34:527:13
814.34:547:11
914.24:557:10
1014.24:567:08
1114.24:577:07
1214.14:587:05
1314.15:007:04
1414.05:017:02
1514.05:027:00
1613.95:036:59
1713.95:056:57
1813.85:066:55
1913.85:076:54
2013.75:086:52
2113.75:106:50
2213.65:116:48
2313.65:126:47
2413.55:136:45
2513.55:146:43
2613.45:166:41
2713.45:176:39
2813.35:186:38
2913.35:196:36
3013.25:216:34
3113.25:226:32

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.13 kWh/m².

For context, solar energy here swings from a low near 1.22 kWh/m² to a high of 5.95 kWh/m² in June across the year — August's 5.13 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.4Bright
75.4Bright
85.4Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.1Bright
185.1Bright
195.1Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
244.9Bright
254.9Bright
264.8Bright
274.8Bright
284.8Bright
294.7Bright
304.7Bright
314.6Bright
Planning a trip in August

Is August a good time to visit Les Coteaux?

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

6.7
Sightseeing
1st-best month of the year
6.1
Beach & pool
1st-best month of the year

August is a reasonable time to visit Les Coteaux for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Les Coteaux in August

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

In August, Les Coteaux sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Les Coteaux in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Les Coteaux peaks around July 14 at about 8 (very 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateModerateLowJul 14UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul8Very high
Aug4Moderate
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Les Coteaux?

Les Coteaux sits at 45.3°N, 74.2°W, 44 m above sea level, in Canada. The nearest listed city is Salaberry-de-Valleyfield, 9.0 km away.

Topography around Les Coteaux

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

Within 3 km, the terrain around Les Coteaux has only modest variations in elevation — a maximum elevation change of 81 m around an average of 50 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 149 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,210 m.

The land around Les Coteaux is covered by cropland (50%) and trees (25%) within 3 km, cropland (53%) and trees (20%) within 16 km, and trees (54%) and cropland (29%) within 80 km.

3 km
81 m
16 km
149 m
80 km
1,210 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Salaberry-de-Valleyfield 9.0 km · Saint-Lazare 15 km · Vaudreuil-Dorion 20 km · Pierrefonds 33 km · Beaconsfield 33 km · Kirkland 34 km · L'Île-Bizard–Sainte-Geneviève 35 km · Pointe-Claire 37 km

Canada travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 83% of US
price level, 2025
GDP per capita
$55,698
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 53%none 35%Muslim 5%Hindu 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 Les Coteaux (45.2834°, -74.2325°, elevation 44 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).