Sapporo weather in August

In August, Sapporo sees average daytime highs of 24°C and overnight lows near 18°C, with 191 mm of rain across 14.2 wet days and about 13.8 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 18% of the time in August, and the air most often feels humid.

Daylight stretches from about 14 h 24 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Sapporo's 10th-clearest and 12th-windiest month. For the whole year in context, see Sapporo's year-round climate.

Daytime high
24°
1st warmest
Overnight low
18°
12th coldest
Rainfall
191 mm
14.2 wet days
Daylight
13 h 48 min
4:45 AM – 6:32 PM
Cloud cover
71%
10th clearest
Wind
7 km/h
12th windiest
Solar energy
4.38 kWh/m²
Travel score
6.1
out of 10

Sapporo is city on Hokkaido, Japan.

Air quality
Moderate
PM2.5 14 µg/m³ · 2010
Density
1,760/km²
people per km²
Founded
1922

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical August day in Sapporo reaches about 24°C in the afternoon and slips back to 18°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 27°C. Set against its neighbours, August runs about 1°C warmer than July and about 4°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12418
22418
32418
42418
52418
62418
72418
82418
92418
102418
112418
122418
132418
142418
152418
162418
172418
182418
192418
202417
212417
222317
232317
242317
252317
262317
272317
282317
292317
302316
312316

How August really feels in Sapporo

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.

Sapporo weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -10°5110.316.39.20.0
Feb-2° / -9°469.814.110.20.0
Mar / -6°6412.112.811.60.0
Apr / 7311.95.413.11.8
May15° / 9312.60.414.44.3
Jun19° / 12°8911.9015.15.7
Jul23° / 16°13813.9014.96.0
Aug24° / 18°19114.2013.86.1
Sep20° / 13°15514.7012.35.5
Oct14° / 9913.60.710.83.8
Nov / -0°8814.49.29.50.7
Dec-1° / -6°7312.717.78.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 14% of August, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23268
33268
43367
53367
63367
73367
83367
93367
103268
113169
123169
133169
143169
153070
163070
173169
183169
193070
203169
213169
223169
233268
243268
253268
263367
273466
283466
293466
303466
313466

Chance of precipitation in August

Any precipitation

Sapporo gets around 191 mm of rain over 14.2 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 46% and peaks near 47% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
144
245
345
445
546
646
746
846
946
1047
1147
1247
1347
1447
1547
1647
1747
1847
1947
2047
2146
2246
2346
2446
2546
2646
2746
2846
2946
3046
3146

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 38% of days. Sticky, muggy-or-worse air turns up on roughly 40% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1316323613
2316313614
3316313614
4216313614
5215323714
6215323614
7215323614
8315333614
9315343613
10315353512
11315363512
12315373411
13314383411
14314393310
15315403310
1641540329
1741541318
1841641318
1951742307
2051742296
2161842286
2261942275
2362042275
2472042265
2572142254
2682241254
2782341243
2892540243
29102639233
30102738223
31112837213

Wind in August

Winds average 7 km/h in August, the calmest month.

Across August, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 24 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 4:29 AM to 5:02 AM, and sunset from 6:52 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.44:296:52
214.44:306:51
314.34:316:50
414.34:326:49
514.24:336:48
614.24:346:46
714.24:356:45
814.14:366:44
914.14:386:42
1014.04:396:41
1114.04:406:39
1214.04:416:38
1313.94:426:37
1413.94:436:35
1513.84:446:34
1613.84:456:32
1713.74:466:30
1813.74:486:29
1913.64:496:27
2013.64:506:26
2113.64:516:24
2213.54:526:22
2313.54:536:21
2413.44:546:19
2513.44:556:17
2613.34:576:16
2713.34:586:14
2813.24:596:12
2913.25:006:11
3013.15:016:09
3113.15:026:07

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.38 kWh/m².

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 5.5 kWh/m² in May across the year — August's 4.38 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.1Bright
304.1Bright
314.1Bright
Planning a trip in August

Hazard calendar for Sapporo

In seasonPeak

In August, Sapporo sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Sapporo sits in the Pacific typhoon belt; the season peaks July–October.

Sapporo's rainy season runs May–November, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Sapporo?

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

6.1
Sightseeing
1st-best month of the year
5.0
Beach & pool
1st-best month of the year

August is a reasonable time to visit Sapporo for sightseeing.

What to pack for Sapporo in August

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

In August, Sapporo sees daytime highs around 24°C and nights near 18°C. Pack rain gear. Worth having: light clothes. About 14 days see rain.

rain gearlight clothes

Sea temperature near Sapporo in August

The nearest coast averages about 22°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 34 km away) is warmest in August at about 22°C and coldest in February near 5°C.

It's comfortable for a long swim from Jul 31 to Sep 22 — about 1.8 months when the water holds above 20°C.

10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan7Bracing
Feb5Bracing
Mar5Bracing
Apr7Bracing
May10Bracing
Jun14Bracing
Jul19Cool
Aug22Refreshing
Sep21Refreshing
Oct17Cool
Nov13Bracing
Dec9Bracing

UV index in Sapporo in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sapporo peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highHighModerateLowAug 18UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr5High
May7Very high
Jun7High
Jul5Moderate
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Sapporo in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Sapporo is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 9 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Sapporo's WHO annual average of 14 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1222 µg/m³Dec 159 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb16Moderate
Mar21Moderate
Apr22Moderate
May20Moderate
Jun14Moderate
Jul13Moderate
Aug11Good
Sep10Good
Oct12Good
Nov10Good
Dec9Good
Location & terrain

Where is Sapporo?

Sapporo sits at 43.1°N, 141.3°E, 26 m above sea level, in Japan. The nearest listed city is Ebetsu, 17 km away.

Topography around Sapporo

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

Within 3 km, the terrain around Sapporo has only modest variations in elevation — a maximum elevation change of 37 m around an average of 20 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,095 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,863 m.

The land around Sapporo is covered by artificial surfaces (90%) within 3 km, trees (44%) and artificial surfaces (36%) within 16 km, and trees (57%) and water (27%) within 80 km.

3 km
37 m
16 km
1,095 m
80 km
1,863 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Ebetsu 17 km · Ishikari 19 km · Kitahiroshima 20 km · Tōbetsu 22 km · Eniwa 27 km · Otaru 31 km · Iwamizawa 36 km · Chitose 37 km

Japan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
100 V · 50 / 60 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$35,951
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.2
per 100k, 2023
Road deaths
3.6
per 100k/yr, 2019
Income group
High
World Bank
English
Very low
EF EPI 446
Religion
Shintoism 49%Buddhism 46%other 4%Christianity 1%

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 Sapporo (43.0667°, 141.35°, elevation 26 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).