Kasumi weather in August

In August, Kasumi sees average daytime highs of 28°C and overnight lows near 25°C, with 132 mm of rain across 12.5 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 31% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Kasumi's 2nd-clearest and 10th-windiest month. For the whole year in context, see Kasumi's year-round climate.

Daytime high
28°
1st warmest
Overnight low
25°
12th coldest
Rainfall
132 mm
12.5 wet days
Daylight
13 h 24 min
5:25 AM – 6:46 PM
Cloud cover
59%
2nd clearest
Wind
13 km/h
10th windiest
Solar energy
5.18 kWh/m²
Travel score
5.7
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical August day in Kasumi reaches about 28°C in the afternoon and slips back to 25°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, August runs about 2°C warmer than July and about 3°C warmer than September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12825
22825
32825
42825
52825
62825
72825
82825
92825
102825
112825
122825
132825
142825
152825
162825
172825
182825
192825
202825
212825
222825
232825
242825
252825
262725
272724
282724
292724
302724
312724

How August really feels in Kasumi

Once humidity and wind are folded in, August averages 8 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
8
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Kasumi weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 20023.97.19.90.8
Feb / 13517.85.610.70.9
Mar10° / 14215.71.811.72.1
Apr15° / 10°11611.5012.94.2
May19° / 15°14311.5013.95.9
Jun22° / 19°15612.6014.45.9
Jul26° / 23°18614.8014.25.8
Aug28° / 25°13212.5013.35.7
Sep25° / 22°20714.3012.26.0
Oct20° / 17°13912.3011.16.0
Nov15° / 12°13516010.14.0
Dec10° / 20722.43.19.61.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% 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 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25248
35248
45248
55248
65248
75248
85248
95149
105149
115050
125050
134852
144852
154852
164852
174753
184654
194654
204654
214555
224654
234654
244456
254456
264357
274357
284357
294357
304258
314258

Chance of precipitation in August

Any precipitation

Kasumi gets around 132 mm of rain over 12.5 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 42% and peaks near 47% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
138
238
337
437
537
637
737
837
938
1038
1139
1240
1340
1441
1542
1642
1743
1843
1943
2044
2144
2244
2344
2444
2545
2645
2745
2846
2946
3046
3147

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10185635
20185536
30185437
40185338
50185338
60185239
70195139
80195139
90195139
1001105138
1101105138
1202105137
1302115136
1402115235
1502125234
1602125333
1702135332
1803145231
1903155230
2003165328
2103175426
2204185325
2304195423
2404205521
2515225319
2615235318
2716245316
2816255414
2917265313
3018275311
3118285310

Wind in August

Winds average 13 km/h in August.

Across August, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 48 min at the start of August to 12 h 48 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 5:13 AM to 5:37 AM, and sunset from 7:02 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:137:02
213.85:147:01
313.85:147:00
413.75:156:59
513.75:166:58
613.75:176:57
713.65:186:56
813.65:186:55
913.65:196:54
1013.65:206:53
1113.55:216:52
1213.55:226:51
1313.55:226:50
1413.45:236:49
1513.45:246:48
1613.45:256:46
1713.35:266:45
1813.35:266:44
1913.35:276:43
2013.25:286:41
2113.25:296:40
2213.25:306:39
2313.15:306:37
2413.15:316:36
2513.05:326:35
2613.05:336:33
2713.05:346:32
2812.95:346:31
2912.95:356:29
3012.95:366:28
3112.85:376:26

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.18 kWh/m².

For context, solar energy here swings from a low near 1.99 kWh/m² to a high of 5.59 kWh/m² in May across the year — August's 5.18 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.4Bright
85.4Bright
95.4Bright
105.3Bright
115.3Bright
125.3Bright
135.2Bright
145.2Bright
155.2Bright
165.1Bright
175.1Bright
185.1Bright
195.0Bright
205.0Bright
215.0Bright
224.9Bright
234.9Bright
244.9Bright
254.8Bright
264.8Bright
274.8Bright
284.7Bright
294.7Bright
304.6Bright
314.6Bright
Planning a trip in August

Hazard calendar for Kasumi

In seasonPeak

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

Kasumi 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 Kasumi?

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

5.7
Sightseeing
6th-best month of the year
6.4
Beach & pool
1st-best month of the year

August is a reasonable time to visit Kasumi for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Kasumi in August

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

In August, Kasumi sees daytime highs around 28°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near Kasumi in August

The nearest coast averages about 27°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 27°C and coldest in February near 12°C.

It's comfortable for a long swim from Jun 13 to Nov 7 — about 4.9 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May17Cool
Jun20Refreshing
Jul24Warm
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Kasumi 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 Kasumi peaks around July 16 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highModerateJul 16UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Kasumi 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 Kasumi is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (September, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1221 µg/m³Sep 1710 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar20Moderate
Apr21Moderate
May18Moderate
Jun14Moderate
Jul12Good
Aug10Good
Sep10Good
Oct10Good
Nov11Good
Dec12Good
Location & terrain

Where is Kasumi?

Kasumi sits at 35.6°N, 134.6°E, 46 m above sea level, in Japan. The nearest listed city is Toyooka, 20 km away.

Topography around Kasumi

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

Within 3 km, the terrain around Kasumi has significant variations in elevation — a maximum elevation change of 375 m around an average of 86 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 955 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,487 m.

The land around Kasumi is covered by trees (70%) within 3 km, trees (57%) and water (40%) within 16 km, and trees (56%) and water (38%) within 80 km.

3 km
375 m
16 km
955 m
80 km
1,487 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Toyooka 20 km · Yabu 28 km · Kyōtango 37 km · Tottori-shi 39 km · Wadayama 41 km · Kōge 42 km · Yotsutsuji 44 km · Miyazu 52 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 Kasumi (35.6333°, 134.6333°, elevation 46 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).