Ishikari weather in August

In August, Ishikari sees average daytime highs of 24°C and overnight lows near 19°C, with 167 mm of rain across 13.2 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 23% of the time in August, and the air most often feels muggy.

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 Ishikari's 8th-clearest and 11th-windiest month. For the whole year in context, see Ishikari's year-round climate.

Daytime high
24°
1st warmest
Overnight low
19°
12th coldest
Rainfall
167 mm
13.2 wet days
Daylight
13 h 48 min
4:45 AM – 6:32 PM
Cloud cover
66%
8th clearest
Wind
11 km/h
11th windiest
Solar energy
4.44 kWh/m²
Travel score
6.3
out of 10

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 Ishikari reaches about 24°C in the afternoon and slips back to 19°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 27°C. Set against its neighbours, August runs about 2°C warmer than July and about 3°C warmer than September.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12420
22420
32420
42420
52420
62420
72420
82420
92420
102420
112420
122420
132420
142420
152420
162420
172420
182420
192420
202419
212419
222419
232419
242419
252319
262319
272319
282319
292319
302319
312319

How August really feels in Ishikari

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.

Ishikari 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-2° / -6°8019.222.59.20.0
Feb-1° / -6°6416.118.410.20.0
Mar / -3°6212.51211.60.0
Apr / 6310.92.613.21.6
May14° / 83110.114.54.0
Jun18° / 13°7410.1015.15.7
Jul22° / 18°12712.2014.96.2
Aug24° / 19°16713.2013.86.3
Sep21° / 16°13913.4012.35.9
Oct15° / 10°10113.90.210.84.2
Nov / 11117.77.49.51.0
Dec / -3°10420.320.48.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 16% of August, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33961
43961
53862
63862
73862
83961
93961
103961
113961
123961
133961
143862
153961
163961
173961
183961
193961
203961
213862
223862
234060
244060
253961
264060
274060
284060
294159
304159
314159

Chance of precipitation in August

Any precipitation

Ishikari gets around 167 mm of rain over 13.2 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 43% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
240
341
441
541
642
742
842
942
1042
1143
1243
1343
1443
1544
1644
1744
1844
1944
2044
2144
2244
2344
2444
2544
2643
2743
2843
2943
3043
3143

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the muggy band about 38% of days. Sticky, muggy-or-worse air turns up on roughly 54% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11102640220
21102639230
31102539240
41102539240
51102539241
61102539241
71102639241
81102639231
91102739221
10292839211
11292939211
12293039201
13293139191
14293239181
15293339171
16293339160
172103439150
182103439140
192113439130
203123439130
213133438120
223133438110
233143438110
243153437100
254163436100
264173436100
27418343590
28519343490
29520343380
30621343180
31622353070

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 12 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
2812calm
2912calm
3012calm
3112calm

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 4:28 AM to 5:02 AM, and sunset from 6:53 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.44:286:53
214.44:306:52
314.34:316:50
414.34:326:49
514.34:336:48
614.24:346:47
714.24:356:45
814.14:366:44
914.14:376:43
1014.04:386:41
1114.04:396:40
1214.04:416:38
1313.94:426:37
1413.94:436:35
1513.84:446:34
1613.84:456:32
1713.74:466:31
1813.74:476:29
1913.74:486:28
2013.64:506:26
2113.64:516:24
2213.54:526:23
2313.54:536:21
2413.44:546:19
2513.44:556:18
2613.34:566:16
2713.34:576:14
2813.24:596:13
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 4.44 kWh/m².

For context, solar energy here swings from a low near 1.48 kWh/m² to a high of 5.5 kWh/m² in May across the year — August's 4.44 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.6Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
314.2Bright
Planning a trip in August

Hazard calendar for Ishikari

In seasonPeak

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

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

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

Is August a good time to visit Ishikari?

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

6.3
Sightseeing
1st-best month of the year
5.2
Beach & pool
1st-best month of the year

August is a reasonable time to visit Ishikari for sightseeing.

What to pack for Ishikari in August

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

In August, Ishikari sees daytime highs around 24°C and nights near 19°C. Worth packing: light clothes and rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Ishikari 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 15 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 Ishikari 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 Ishikari 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 Ishikari 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 Ishikari is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1121 µg/m³Dec 169 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb15Moderate
Mar21Moderate
Apr21Moderate
May19Moderate
Jun13Moderate
Jul12Moderate
Aug11Good
Sep10Good
Oct12Good
Nov11Good
Dec9Good
Location & terrain

Where is Ishikari?

Ishikari sits at 43.2°N, 141.4°E, 0 m above sea level, in Japan. The nearest listed city is Tōbetsu, 13 km away.

Topography around Ishikari

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

Within 3 km, the terrain around Ishikari has only modest variations in elevation — a maximum elevation change of 14 m around an average of 3 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 414 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,859 m.

The land around Ishikari is covered by water (43%) and cropland (26%) within 3 km, water (45%) and cropland (20%) within 16 km, and trees (57%) and water (26%) within 80 km.

3 km
14 m
16 km
414 m
80 km
1,859 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Tōbetsu 13 km · Sapporo 19 km · Ebetsu 22 km · Otaru 29 km · Iwamizawa 33 km · Kitahiroshima 34 km · Bibai 42 km · Eniwa 43 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 Ishikari (43.2397°, 141.3539°, elevation 0 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).