Ishikawa weather in August

In August, Ishikawa sees average daytime highs of 28°C and overnight lows near 20°C, with 141 mm of rain across 15.1 wet days and about 13.4 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 27°C by the end. The sky is clear or mostly clear about 16% of the time in August, and the air most often feels muggy.

Daylight stretches from about 13 h 54 min at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Ishikawa's 9th-clearest and 12th-windiest month. For the whole year in context, see Ishikawa's year-round climate.

Daytime high
28°
1st warmest
Overnight low
20°
12th coldest
Rainfall
141 mm
15.1 wet days
Daylight
13 h 24 min
4:59 AM – 6:25 PM
Cloud cover
71%
9th clearest
Wind
7 km/h
12th windiest
Solar energy
4.5 kWh/m²
Travel score
5.2
out of 10

Ishikawa is town in Ishikawa district, Fukushima prefecture, Japan.

Density
163/km²
people per km²
Founded
1894

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 28°C in the first days to 27°C by the end.

A typical August day in Ishikawa reaches about 28°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 32°C. Set against its neighbours, August runs about 1°C warmer than July and about 4°C warmer than September.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12821
22921
32921
42921
52921
62921
72921
82921
92821
102821
112821
122821
132821
142821
152821
162821
172821
182820
192820
202820
212820
222720
232720
242720
252720
262720
272720
282720
292720
302719
312619

How August really feels in Ishikawa

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.

Ishikawa weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°547.26.79.70.0
Feb / -3°497.25.110.60.1
Mar / 91114.911.71.6
Apr15° / 10311.51.312.94.2
May20° / 10°11512.30145.9
Jun23° / 15°13114.4014.55.7
Jul27° / 19°18717.6014.35.1
Aug28° / 20°14115.1013.45.2
Sep24° / 17°17114.5012.35.8
Oct18° / 10°15011.60115.4
Nov12° / 758.10.3103.4
Dec / -1°497.93.59.50.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% 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 70%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23169
33169
43070
53070
63070
73070
83070
93070
103070
112971
122971
132971
142971
152971
162971
172971
182971
193070
203070
213070
223070
233070
243169
253169
263070
273169
283169
293169
303169
313070

Chance of precipitation in August

Any precipitation

Ishikawa gets around 141 mm of rain over 15.1 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 49% and peaks near 52% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
148
248
348
447
547
647
747
847
947
1048
1148
1248
1349
1449
1549
1649
1749
1849
1949
2049
2149
2250
2350
2450
2550
2651
2751
2851
2952
3052
3152

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 42% of days. Sticky, muggy-or-worse air turns up on roughly 76% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
105114440
205114341
305124242
405124142
505124142
604124043
704134043
804134043
904134042
1004144042
1104144041
1204144140
1314154239
1414154238
1514154337
1614164336
1715164335
1815174433
1915174432
2016184331
2116194330
2216204329
2317214328
2417224326
2517234325
2617254224
2718264223
2818274122
2919284121
3019294020
3129304019

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
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 54 min at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over August. Sunrise moves from 4:46 AM to 5:12 AM, and sunset from 6:42 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.94:466:42
213.94:476:41
313.94:486:40
413.84:496:39
513.84:506:38
613.84:516:37
713.74:516:36
813.74:526:35
913.74:536:34
1013.64:546:33
1113.64:556:31
1213.64:566:30
1313.54:576:29
1413.54:576:28
1513.54:586:27
1613.44:596:25
1713.45:006:24
1813.45:016:23
1913.35:026:21
2013.35:036:20
2113.35:036:19
2213.25:046:17
2313.25:056:16
2413.15:066:15
2513.15:076:13
2613.15:086:12
2713.05:096:10
2813.05:096:09
2913.05:106:07
3012.95:116:06
3112.95:126:04

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.5 kWh/m².

For context, solar energy here swings from a low near 2.27 kWh/m² to a high of 5.35 kWh/m² in May across the year — August's 4.5 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.6Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.4Bright
194.4Bright
204.4Bright
214.3Bright
224.3Bright
234.3Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.1Bright
294.1Bright
304.1Bright
314.0Bright
Planning a trip in August

Hazard calendar for Ishikawa

In seasonPeak

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

Ishikawa 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 Ishikawa?

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

5.2
Sightseeing
5th-best month of the year
5.8
Beach & pool
1st-best month of the year

August is a reasonable time to visit Ishikawa for sightseeing.

What to pack for Ishikawa in August

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

In August, Ishikawa sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

Sea temperature near Ishikawa in August

The nearest coast averages about 24°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 49 km away) is warmest in August at about 24°C and coldest in March near 12°C.

It's comfortable for a long swim from Jul 1 to Oct 22 — about 3.7 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May16Cool
Jun19Cool
Jul21Refreshing
Aug24Refreshing
Sep23Refreshing
Oct20Refreshing
Nov18Cool
Dec16Cool

UV index in Ishikawa in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ishikawa peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 17UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Low

Air quality in Ishikawa 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 Ishikawa is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 1810 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug12Good
Sep11Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Ishikawa?

Ishikawa sits at 37.1°N, 140.4°E, 330 m above sea level, in Japan. The nearest listed city is Yabuki, 13 km away.

Topography around Ishikawa

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

Within 3 km, the terrain around Ishikawa has only modest variations in elevation — a maximum elevation change of 223 m around an average of 353 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 716 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,029 m.

The land around Ishikawa is covered by trees (77%) within 3 km, trees (70%) and cropland (20%) within 16 km, and trees (66%) within 80 km.

3 km
223 m
16 km
716 m
80 km
2,029 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Yabuki 13 km · Sukagawa 16 km · Shirakawa 17 km · Kumakura 25 km · Kōriyama 28 km · Miharu 32 km · Nasu 34 km · Tamura 34 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 Ishikawa (37.15°, 140.45°, elevation 330 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).