Joliette weather in August

In August, Joliette sees average daytime highs of 25°C and overnight lows near 14°C, with 88 mm of rain across 11.1 wet days and about 14 hours of daylight. It is the 2nd-warmest and 6th-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 dry.

Daylight stretches from about 14 h 42 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Joliette's 2nd-clearest and 12th-windiest month. For the whole year in context, see Joliette's year-round climate.

Daytime high
25°
2nd warmest
Overnight low
14°
11th coldest
Rainfall
88 mm
11.1 wet days
Daylight
14 hours
4:59 AM – 6:57 PM
Cloud cover
58%
2nd clearest
Wind
10 km/h
12th windiest
Solar energy
5.09 kWh/m²
Travel score
6.8
out of 10

Joliette is city in Québec, Canada.

Density
1,514/km²
people per km²
Founded
1864

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 Joliette reaches about 25°C in the afternoon and slips back to 14°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 29°C. Set against its neighbours, August runs about 1°C cooler than July and about 5°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12615
22615
32615
42615
52615
62615
72615
82615
92615
102614
112514
122514
132514
142514
152514
162514
172514
182514
192514
202513
212513
222413
232413
242413
252413
262413
272413
282413
292412
302312
312312

How August really feels in Joliette

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.

Joliette 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-6° / -16°759.79.38.90.0
Feb-4° / -15°608.37.8100.0
Mar / -8°729.96.811.60.0
Apr11° / 9910.93.213.32.5
May19° / 8911.40.214.75.7
Jun24° / 13°9211.1015.56.5
Jul26° / 15°8811.8015.26.4
Aug25° / 14°8811.10146.8
Sep20° / 919.4012.36.3
Oct13° / 10210.70.910.73.3
Nov / -3°8410.44.19.20.4
Dec-2° / -11°84119.28.50.0

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 21% of August, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
25050
35050
45050
55050
65050
75050
85050
94951
105050
115050
125050
135050
145050
155050
165149
175149
185149
195248
205248
215248
225248
235248
245248
255248
265248
275248
285149
295248
305248
315149

Chance of precipitation in August

Any precipitation

Joliette gets around 88 mm of rain over 11.1 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 34% and peaks near 37% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
337
437
537
637
737
837
936
1036
1136
1235
1335
1435
1534
1634
1734
1833
1933
2033
2133
2232
2332
2432
2532
2632
2731
2831
2931
3031
3131

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1272732131
2282731131
3282831131
4282831121
5282831121
6292930121
7292930110
8302930110
9302930110
10312929100
11322929100
12322929100
1333292990
1433292890
1534292880
1635292880
1736292780
1836292780
1937282680
2039282580
2140282580
2241272480
2342272380
2443272280
2544272180
2645272080
2746271980
2847271880
2948271780
3049271680
3151261580

Wind in August

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

Across August, daily wind ranges from about 9 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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
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 42 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 90 minutes over August. Sunrise moves from 4:40 AM to 5:18 AM, and sunset from 7:20 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.74:407:20
214.64:417:18
314.64:427:17
414.54:447:16
514.54:457:14
614.44:467:13
714.44:477:11
814.44:487:10
914.34:507:08
1014.34:517:07
1114.24:527:05
1214.24:537:04
1314.14:557:02
1414.14:567:00
1514.04:576:59
1614.04:596:57
1713.95:006:55
1813.95:016:54
1913.85:026:52
2013.85:046:50
2113.75:056:48
2213.75:066:47
2313.65:086:45
2413.65:096:43
2513.55:106:41
2613.55:116:39
2713.45:136:37
2813.45:146:35
2913.35:156:34
3013.35:176:32
3113.25:186:30

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.09 kWh/m².

For context, solar energy here swings from a low near 1.24 kWh/m² to a high of 5.94 kWh/m² in June across the year — August's 5.09 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.1Bright
175.1Bright
185.1Bright
195.0Bright
205.0Bright
215.0Bright
224.9Bright
234.9Bright
244.9Bright
254.8Bright
264.8Bright
274.8Bright
284.7Bright
294.7Bright
304.6Bright
314.6Bright
Planning a trip in August

Is August a good time to visit Joliette?

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

6.8
Sightseeing
1st-best month of the year
6.0
Beach & pool
2nd-best month of the year

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

What to pack for Joliette in August

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

In August, Joliette sees daytime highs around 25°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Joliette 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 Joliette peaks around July 13 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 10 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 8Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr4Moderate
May6High
Jun6High
Jul8Very high
Aug4Moderate
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Joliette?

Joliette sits at 46.0°N, 73.4°W, 57 m above sea level, in Canada. The nearest listed city is Saint-Charles-Borromée, 5.0 km away.

Topography around Joliette

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

Within 3 km, the terrain around Joliette has only modest variations in elevation — a maximum elevation change of 60 m around an average of 54 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 172 m; within 80 km, large variations in elevation — a maximum elevation change of 924 m.

The land around Joliette is covered by artificial surfaces (35%) and trees (31%) within 3 km, cropland (51%) and trees (36%) within 16 km, and trees (56%) and cropland (29%) within 80 km.

3 km
60 m
16 km
172 m
80 km
924 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Saint-Charles-Borromée 5.0 km · L'Assomption 21 km · Sorel-Tracy 24 km · Repentigny 31 km · Saint-Lin-Laurentides 32 km · Mascouche 33 km · Varennes 37 km · Terrebonne 39 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 Joliette (46.0164°, -73.4236°, elevation 57 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).