Kaseda-shirakame weather in August

In August, Kaseda-shirakame sees average daytime highs of 30°C and overnight lows near 26°C, with 164 mm of rain across 15.3 wet days and about 13.1 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 31% of the time in August, and the air most often feels miserable.

Daylight stretches from about 13 h 30 min at the start of August to 12 h 42 min by month's end. Set against the rest of the year, August is Kaseda-shirakame's 5th-clearest and 9th-windiest month. For the whole year in context, see Kaseda-shirakame's year-round climate.

Daytime high
30°
1st warmest
Overnight low
26°
12th coldest
Rainfall
164 mm
15.3 wet days
Daylight
13 h 12 min
5:48 AM – 6:57 PM
Cloud cover
61%
5th clearest
Wind
12 km/h
9th windiest
Solar energy
5.14 kWh/m²
Travel score
4.3
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical August day in Kaseda-shirakame reaches about 30°C in the afternoon and slips back to 26°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, August runs about 1°C warmer than July and about 2°C warmer than September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13026
23026
33026
43026
53026
63026
73026
83026
93026
103026
113026
123026
133026
143026
153026
163026
173026
183026
193026
203026
213026
223026
233026
243026
253026
263026
273026
283026
293026
303025
313025

How August really feels in Kaseda-shirakame

Once humidity and wind are folded in, August averages 31 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
31
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.

Kaseda-shirakame weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 10412.510.23.0
Feb13° / 11711.510.93.4
Mar16° / 11°17013.611.84.5
Apr19° / 14°18912.112.75.8
May23° / 18°20711.713.66.4
Jun26° / 22°49919.3145.0
Jul29° / 25°30717.513.84.5
Aug30° / 26°16415.313.14.3
Sep28° / 24°20613.412.25.5
Oct24° / 19°113911.27.2
Nov19° / 15°1279.510.46.2
Dec14° / 10°10210.5104.2

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 17% of August, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24852
34951
44852
54852
64753
74753
84753
94753
104654
114654
124654
134654
144753
154753
164852
174852
184852
194951
205050
215050
225050
235050
245050
255050
265050
274951
284951
294951
304951
314951

Chance of precipitation in August

Any precipitation

Kaseda-shirakame gets around 164 mm of rain over 15.3 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 50% and peaks near 53% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
144
244
344
444
545
645
746
847
948
1048
1149
1250
1351
1452
1552
1653
1753
1853
1953
2053
2153
2253
2352
2452
2552
2652
2752
2852
2952
3052
3152

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 64% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1002773
2002773
3002773
4002773
5002773
6002773
7002773
8012772
9012772
10012772
11012772
12012871
13012871
14012970
15012970
16013069
17023167
18023266
19023365
20033463
21033562
22043660
23043759
24153955
25164053
26164152
27174350
28184448
29184545
30194743
311104841

Wind in August

Winds average 12 km/h in August.

Across August, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light 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
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 30 min at the start of August to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over August. Sunrise moves from 5:38 AM to 5:58 AM, and sunset from 7:11 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:387:11
213.55:397:10
313.55:407:10
413.55:407:09
513.55:417:08
613.45:427:07
713.45:427:06
813.45:437:05
913.35:447:04
1013.35:447:04
1113.35:457:03
1213.35:467:02
1313.25:467:01
1413.25:477:00
1513.25:486:59
1613.25:486:57
1713.15:496:56
1813.15:496:55
1913.15:506:54
2013.05:516:53
2113.05:516:52
2213.05:526:51
2313.05:536:50
2412.95:536:48
2512.95:546:47
2612.95:556:46
2712.85:556:45
2812.85:566:44
2912.85:566:42
3012.75:576:41
3112.75:586:40

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.14 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 5.14 kWh/m² in May across the year — August's 5.14 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
254.9Bright
264.9Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.7Bright
Planning a trip in August

Hazard calendar for Kaseda-shirakame

In seasonPeak

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

Kaseda-shirakame sits in the Pacific typhoon belt; the season peaks July–October.

Kaseda-shirakame's rainy season runs June–July, 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 Kaseda-shirakame?

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

4.3
Sightseeing
9th-best month of the year
6.0
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Kaseda-shirakame for sightseeing.

What to pack for Kaseda-shirakame in August

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

In August, Kaseda-shirakame sees daytime highs around 30°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

Sea temperature near Kaseda-shirakame in August

The nearest coast averages about 28°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 19 km away) is warmest in August at about 28°C and coldest in February near 18°C.

It's comfortable for a long swim from Apr 26 to Dec 26 — about 8.1 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb18Cool
Mar19Cool
Apr19Cool
May21Refreshing
Jun24Refreshing
Jul27Warm
Aug28Tropical
Sep27Warm
Oct25Warm
Nov23Refreshing
Dec21Refreshing

UV index in Kaseda-shirakame 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 Kaseda-shirakame peaks around July 10 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 10UV 11Dec 23UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar7High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Kaseda-shirakame 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 Kaseda-shirakame is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1423 µg/m³Oct 1012 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb19Moderate
Mar22Moderate
Apr23Moderate
May21Moderate
Jun17Moderate
Jul12Moderate
Aug14Moderate
Sep12Moderate
Oct12Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Kaseda-shirakame?

Kaseda-shirakame sits at 31.4°N, 130.3°E, 22 m above sea level, in Japan. The nearest listed city is Minamisatsuma, 4.0 km away.

Topography around Kaseda-shirakame

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

Within 3 km, the terrain around Kaseda-shirakame has only modest variations in elevation — a maximum elevation change of 194 m around an average of 35 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 611 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,644 m.

The land around Kaseda-shirakame is covered by trees (59%) and artificial surfaces (21%) within 3 km, trees (62%) and water (26%) within 16 km, and water (66%) and trees (29%) within 80 km.

3 km
194 m
16 km
611 m
80 km
1,644 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Minamisatsuma 4.0 km · Minamikyushu 15 km · Makurazaki 17 km · Ijūin 24 km · Kagoshima 28 km · Umeki 29 km · Kushikino 34 km · Ichikikushikino 35 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 Kaseda-shirakame (31.4167°, 130.3167°, elevation 22 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).