Sault Ste. Marie weather in August

In August, Sault Ste. Marie sees average daytime highs of 22°C and overnight lows near 14°C, with 95 mm of rain across 10.9 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 23°C in the first days to 21°C by the end. The sky is clear or mostly clear about 36% 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 Sault Ste. Marie's 2nd-clearest and 11th-windiest month. For the whole year in context, see Sault Ste. Marie's year-round climate.

Daytime high
22°
2nd warmest
Overnight low
14°
11th coldest
Rainfall
95 mm
10.9 wet days
Daylight
14 hours
5:41 AM – 7:42 PM
Cloud cover
54%
2nd clearest
Wind
11 km/h
11th windiest
Solar energy
5.38 kWh/m²
Travel score
6.6
out of 10

Sault Ste. Marie is city in Ontario, Canada.

Air quality
Excellent
PM2.5 5 µg/m³ · 2019
Density
323/km²
people per km²
Founded
1888

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 23°C in the first days to 21°C by the end.

A typical August day in Sault Ste. Marie reaches about 22°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12315
22315
32315
42315
52315
62315
72315
82315
92315
102315
112315
122315
132314
142214
152214
162214
172214
182214
192214
202214
212214
222214
232214
242214
252214
262114
272113
282113
292113
302113
312113

How August really feels in Sault Ste. Marie

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.

Sault Ste. Marie 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° / -14°4610.212.28.80.0
Feb-5° / -13°357.58.1100.0
Mar / -8°468.36.811.60.0
Apr / -1°6710.2413.31.2
May15° / 72100.314.84.4
Jun20° / 11°819.8015.56.3
Jul23° / 15°10111.5015.26.7
Aug22° / 14°9510.90146.6
Sep18° / 10°10812.1012.45.4
Oct11° / 10113.70.510.72.4
Nov / -2°6711.26.69.20.1
Dec-2° / -9°5611118.40.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25842
35842
45842
55842
65941
75941
85941
95941
105941
115743
125743
135743
145644
155644
165545
175545
185545
195446
205446
215347
225347
235347
245248
255248
265248
275248
285347
295248
305248
315248

Chance of precipitation in August

Any precipitation

Sault Ste. Marie gets around 95 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 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
236
336
436
535
635
734
834
934
1034
1134
1234
1334
1434
1534
1634
1735
1835
1935
2036
2136
2236
2336
2436
2536
2636
2736
2836
2937
3037
3137

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 11% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1243230131
2243229131
3243229131
4253229131
5253228131
6263228131
7263228121
8273227121
9283227121
10283227111
11293227111
12293228101
13303228101
14303228101
1531312891
1631312891
1731312891
1832312890
1932302890
2032302890
2133302890
2234302790
2334292790
2435292690
2536292690
2637292590
2737292590
2838292490
2939282490
3040282380
3142282280

Wind in August

Winds average 11 km/h in August.

Across August, daily wind ranges from about 11 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
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
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 5:22 AM to 6:01 AM, and sunset from 8:05 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.75:228:05
214.75:238:03
314.65:258:02
414.65:268:01
514.55:277:59
614.55:287:58
714.45:307:56
814.45:317:55
914.45:327:53
1014.35:337:52
1114.35:357:50
1214.25:367:48
1314.25:377:47
1414.15:397:45
1514.15:407:43
1614.05:417:42
1714.05:427:40
1813.95:447:38
1913.95:457:37
2013.85:467:35
2113.85:487:33
2213.75:497:31
2313.65:507:29
2413.65:527:27
2513.55:537:26
2613.55:547:24
2713.45:567:22
2813.45:577:20
2913.35:587:18
3013.35:597:16
3113.26:017:14

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.38 kWh/m².

For context, solar energy here swings from a low near 1.1 kWh/m² to a high of 6.52 kWh/m² in June across the year — August's 5.38 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.8Bright
65.8Bright
75.8Bright
85.7Bright
95.7Bright
105.7Bright
115.6Bright
125.6Bright
135.5Bright
145.5Bright
155.4Bright
165.4Bright
175.3Bright
185.3Bright
195.2Bright
205.2Bright
215.1Bright
225.1Bright
235.0Bright
245.0Bright
254.9Bright
264.9Bright
274.8Bright
284.8Bright
294.8Bright
304.7Bright
314.7Bright
Planning a trip in August

Is August a good time to visit Sault Ste. Marie?

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

6.6
Sightseeing
2nd-best month of the year
4.7
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Sault Ste. Marie for sightseeing.

What to pack for Sault Ste. Marie in August

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

In August, Sault Ste. Marie sees daytime highs around 22°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Sault Ste. Marie in August

The nearest coast averages about 19°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 km away) is warmest in August at about 19°C and coldest in February near 1°C.

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

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan1Bracing
Feb1Bracing
Mar1Bracing
Apr2Bracing
May5Bracing
Jun11Bracing
Jul17Cool
Aug19Cool
Sep16Cool
Oct11Bracing
Nov7Bracing
Dec4Bracing

UV index in Sault Ste. Marie 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 Sault Ste. Marie peaks around June 18 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 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 highHighModerateLowJun 18UV 8Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May7High
Jun8Very high
Jul7Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Sault Ste. Marie?

Sault Ste. Marie sits at 46.5°N, 84.3°W, 186 m above sea level, in Canada. The nearest listed city is Sault Ste. Marie, 3.0 km away.

TimminsMidland

Topography around Sault Ste. Marie

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

Within 3 km, the terrain around Sault Ste. Marie has only modest variations in elevation — a maximum elevation change of 82 m around an average of 198 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 263 m; within 80 km, significant variations in elevation — a maximum elevation change of 491 m.

The land around Sault Ste. Marie is covered by artificial surfaces (45%) and trees (24%) within 3 km, trees (65%) within 16 km, and trees (65%) and water (30%) within 80 km.

3 km
82 m
16 km
263 m
80 km
491 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Sault Ste. Marie 3.0 km · Mackinac Island 77 km · Traverse City 219 km · Marquette 234 km · Valley East 255 km · Greater Sudbury 256 km · Timmins 313 km · Midland 323 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 Sault Ste. Marie (46.5168°, -84.3333°, elevation 186 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).