Trois-Rivières weather in August

In August, Trois-Rivières sees average daytime highs of 24°C and overnight lows near 15°C, with 109 mm of rain across 12.1 wet days and about 14 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 23°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 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 Trois-Rivières's 1st-clearest and 12th-windiest month. For the whole year in context, see Trois-Rivières's year-round climate.

Daytime high
24°
2nd warmest
Overnight low
15°
11th coldest
Rainfall
109 mm
12.1 wet days
Daylight
14 hours
4:54 AM – 6:54 PM
Cloud cover
58%
1st clearest
Wind
11 km/h
12th windiest
Solar energy
4.99 kWh/m²
Travel score
6.6
out of 10

Trois-Rivières is city in Quebec, Canada.

Air quality
Good
PM2.5 7 µg/m³ · 2019
Density
500/km²
people per km²
Founded
1846

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 25°C in the first days to 23°C by the end.

A typical August day in Trois-Rivières reaches about 24°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 28°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)
12517
22516
32516
42516
52516
62516
72516
82516
92516
102516
112516
122516
132516
142516
152516
162416
172415
182415
192415
202415
212415
222415
232415
242415
252315
262314
272314
282314
292314
302314
312314

How August really feels in Trois-Rivières

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.

Trois-Rivières weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-6° / -15°7710.910.48.80.0
Feb-4° / -14°618.88.7100.0
Mar / -7°7610.57.111.60.0
Apr10° / 9811.53.213.32.0
May18° / 9612.40.214.75.4
Jun23° / 14°10912.3015.56.3
Jul25° / 16°11213.5015.26.2
Aug24° / 15°10912.10146.6
Sep20° / 11°9811012.46.0
Oct12° / 11111.50.810.73.1
Nov / -2°8911.44.19.20.3
Dec-2° / -10°9011.79.88.50.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
34951
45050
55050
65050
74951
85050
95050
104951
115149
125149
135149
145149
155149
165248
175248
185347
195347
205347
215446
225545
235446
245545
255545
265545
275545
285545
295545
305446
315446

Chance of precipitation in August

Any precipitation

Trois-Rivières gets around 109 mm of rain over 12.1 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 38% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
241
341
441
541
641
741
840
940
1040
1139
1239
1339
1438
1538
1637
1737
1837
1936
2036
2136
2236
2336
2436
2536
2636
2736
2836
2936
3036
3137

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1182536192
2182536192
3182537191
4192537191
5192537181
6192537181
7192537171
8202537171
9202537171
10212636161
11222636161
12222635151
13232635151
14242735141
15242735141
16252734131
17262734131
18272733131
19282732121
20292731121
21302830121
22312829121
23322828121
24342826111
25352825111
26362824111
27382823111
28392722111
29412721101
30422721101
31432620101

Wind in August

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

Across August, daily wind ranges from about 10 km/h on the calmest days to 11 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
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 4:35 AM to 5:14 AM, and sunset from 7:17 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.74:357:17
214.64:377:16
314.64:387:14
414.64:397:13
514.54:407:12
614.54:427:10
714.44:437:09
814.44:447:07
914.34:457:06
1014.34:477:04
1114.24:487:02
1214.24:497:01
1314.14:506:59
1414.14:526:58
1514.04:536:56
1614.04:546:54
1713.94:566:53
1813.94:576:51
1913.84:586:49
2013.85:006:47
2113.75:016:45
2213.75:026:44
2313.65:036:42
2413.65:056:40
2513.55:066:38
2613.55:076:36
2713.45:096:34
2813.45:106:32
2913.35:116:30
3013.35:136:29
3113.25:146:27

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.99 kWh/m².

For context, solar energy here swings from a low near 1.22 kWh/m² to a high of 5.86 kWh/m² in June across the year — August's 4.99 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.1Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
194.9Bright
204.9Bright
214.9Bright
224.8Bright
234.8Bright
244.8Bright
254.7Bright
264.7Bright
274.7Bright
284.6Bright
294.6Bright
304.5Bright
314.5Bright
Planning a trip in August

Is August a good time to visit Trois-Rivières?

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

6.6
Sightseeing
1st-best month of the year
5.6
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Trois-Rivières for sightseeing.

What to pack for Trois-Rivières in August

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

In August, Trois-Rivières sees daytime highs around 24°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Trois-Rivières in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Trois-Rivières peaks around July 13 at about 7 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 13UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr4Moderate
May6High
Jun6High
Jul8Very high
Aug3Moderate
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Trois-Rivières?

Trois-Rivières sits at 46.3°N, 72.5°W, 16 m above sea level, in Canada. The nearest listed city is Shawinigan, 29 km away.

Topography around Trois-Rivières

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

Within 3 km, the terrain around Trois-Rivières has only modest variations in elevation — a maximum elevation change of 56 m around an average of 15 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 109 m; within 80 km, large variations in elevation — a maximum elevation change of 759 m.

The land around Trois-Rivières is covered by artificial surfaces (41%) and water (32%) within 3 km, trees (46%) and cropland (26%) within 16 km, and trees (61%) and cropland (28%) within 80 km.

3 km
56 m
16 km
109 m
80 km
759 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Shawinigan 29 km · Drummondville 52 km · Sorel-Tracy 55 km · Victoriaville 56 km · Joliette 77 km · Saint-Charles-Borromée 78 km · Saint-Hyacinthe 85 km · L'Assomption 89 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 Trois-Rivières (46.3451°, -72.5477°, elevation 16 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).