Rimouski weather in August

In August, Rimouski sees average daytime highs of 19°C and overnight lows near 14°C, with 84 mm of rain across 10.9 wet days and about 14.1 hours of daylight. It is the 2nd-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 18°C by the end. The sky is clear or mostly clear about 33% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 54 min at the start of August to 13 h 18 min by month's end. Set against the rest of the year, August is Rimouski's 1st-clearest and 9th-windiest month. For the whole year in context, see Rimouski's year-round climate.

Daytime high
19°
2nd warmest
Overnight low
14°
12th coldest
Rainfall
84 mm
10.9 wet days
Daylight
14 h 12 min
4:34 AM – 6:43 PM
Cloud cover
57%
1st clearest
Wind
14 km/h
9th windiest
Solar energy
5.06 kWh/m²
Travel score
6.0
out of 10

Rimouski is city of Québec, Canada.

Density
79/km²
people per km²
Founded
1869

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 20°C in the first days to 18°C by the end.

A typical August day in Rimouski reaches about 19°C in the afternoon and slips back to 14°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 22°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12015
22015
32015
42015
52014
62014
72014
82014
92014
101914
111914
121914
131914
141914
151914
161914
171914
181914
191914
201914
211914
221913
231813
241813
251813
261813
271813
281813
291813
301812
311712

How August really feels in Rimouski

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.

Rimouski weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-7° / -14°6410.311.68.60.0
Feb-7° / -13°568.59.19.90.0
Mar-2° / -8°7310.49.911.60.0
Apr / -1°8411.65.513.40.2
May11° / 8612.10.8152.4
Jun16° / 10°8511.3015.84.7
Jul19° / 14°8811.8015.55.9
Aug19° / 14°8410.9014.16.0
Sep15° / 10°9211.3012.44.5
Oct / 10912.50.810.61.7
Nov / -1°9411.66.890.1
Dec-3° / -8°841212.18.20.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% 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 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
25050
35050
45149
55248
65248
75347
85446
95446
105545
115644
125644
135644
145743
155743
165743
175743
185644
195644
205644
215545
225446
235347
245347
255347
265248
275149
285149
295050
305050
314951

Chance of precipitation in August

Any precipitation

Rimouski gets around 84 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 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
735
835
935
1035
1135
1235
1334
1434
1534
1634
1734
1834
1934
2034
2134
2234
2334
2434
2535
2635
2735
2835
2936
3036
3136

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 49% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1354421
2354420
3364420
4364420
5364420
6374419
7384319
8394318
9404218
10414217
11424217
12434116
13444115
14444115
15454014
16464014
17483913
18493813
19513712
20513712
21533611
22553510
23563410
2458339
2560328
2662308
2764297
2865287
2966277
3069256
3170246

Wind in August

Winds average 14 km/h in August.

Across August, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 54 min 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 96 minutes over August. Sunrise moves from 4:13 AM to 4:55 AM, and sunset from 7:07 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:137:07
214.94:147:06
314.84:167:04
414.84:177:03
514.74:187:01
614.74:207:00
714.64:216:58
814.64:226:57
914.54:246:55
1014.54:256:53
1114.44:276:52
1214.44:286:50
1314.34:296:48
1414.34:316:46
1514.24:326:45
1614.24:346:43
1714.14:356:41
1814.04:366:39
1914.04:386:37
2013.94:396:35
2113.94:416:33
2213.84:426:31
2313.84:446:30
2413.74:456:28
2513.74:466:26
2613.64:486:24
2713.54:496:22
2813.54:516:19
2913.44:526:17
3013.44:546:15
3113.34:556:13

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.06 kWh/m².

For context, solar energy here swings from a low near 1.01 kWh/m² to a high of 6.06 kWh/m² in June across the year — August's 5.06 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
165.1Bright
175.1Bright
185.0Bright
195.0Bright
205.0Bright
214.9Bright
224.9Bright
234.8Bright
244.8Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.5Bright
304.5Bright
314.4Bright
Planning a trip in August

Is August a good time to visit Rimouski?

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

6.0
Sightseeing
1st-best month of the year
2.5
Beach & pool
1st-best month of the year

August is a reasonable time to visit Rimouski for sightseeing.

What to pack for Rimouski in August

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

In August, Rimouski sees daytime highs around 19°C and nights near 14°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near Rimouski in August

The nearest coast averages about 12°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 12°C and coldest in February near -0°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°5°10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°C)Comfort
Jan0Bracing
Feb0Bracing
Mar0Bracing
Apr2Bracing
May4Bracing
Jun9Bracing
Jul11Bracing
Aug12Bracing
Sep9Bracing
Oct6Bracing
Nov2Bracing
Dec1Bracing

UV index in Rimouski in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rimouski peaks around July 12 at about 7 (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 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 12UV 7Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr4Moderate
May5Moderate
Jun6High
Jul7High
Aug2Moderate
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Rimouski?

Rimouski sits at 48.4°N, 68.5°W, 23 m above sea level, in Canada. The nearest listed city is Baie-Comeau, 90 km away.

Topography around Rimouski

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

Within 3 km, the terrain around Rimouski has only modest variations in elevation — a maximum elevation change of 191 m around an average of 36 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 385 m; within 80 km, large variations in elevation — a maximum elevation change of 902 m.

The land around Rimouski is covered by artificial surfaces (33%) and water (30%) within 3 km, water (42%) and trees (34%) within 16 km, and trees (57%) and water (34%) within 80 km.

3 km
191 m
16 km
385 m
80 km
902 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Baie-Comeau 90 km · Rivière-du-Loup 102 km · Edmundston 120 km · Chicoutimi 187 km · Saguenay 188 km · Jonquière 201 km · Alma 231 km · Sept-Îles 249 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 Rimouski (48.4488°, -68.524°, elevation 23 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).