Shisō weather in August

In August, Shisō sees average daytime highs of 31°C and overnight lows near 23°C, with 144 mm of rain across 13.4 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 28% 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 Shisō's 6th-clearest and 10th-windiest month. For the whole year in context, see Shisō's year-round climate.

Daytime high
31°
1st warmest
Overnight low
23°
12th coldest
Rainfall
144 mm
13.4 wet days
Daylight
13 h 18 min
5:26 AM – 6:46 PM
Cloud cover
61%
6th clearest
Wind
8 km/h
10th windiest
Solar energy
5.44 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 31°C through the month.

A typical August day in Shisō reaches about 31°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 33°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)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133124
143124
153123
163123
173123
183123
193123
203123
213023
223023
233023
243023
253023
263023
273022
283022
293022
303022
312922

How August really feels in Shisō

Once humidity and wind are folded in, August averages 28 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
28
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.

Shisō weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 455.71.29.91.4
Feb / 607.3210.71.8
Mar13° / 11511.10.411.73.3
Apr18° / 12910.5012.95.6
May22° / 13°15010.7013.86.5
Jun26° / 18°18813.6014.35.8
Jul29° / 22°22716.4014.14.5
Aug31° / 23°14413.4013.34.3
Sep27° / 19°20412.3012.25.9
Oct22° / 13°1308.4011.16.9
Nov16° / 686.3010.25.4
Dec10° / 556.10.59.72.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% 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 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24456
34456
44555
54555
64555
74456
84456
94456
104456
114456
124456
134456
144357
154357
164456
174456
184456
194456
204456
214456
224456
234456
244456
254357
264357
274357
284456
294456
304456
314456

Chance of precipitation in August

Any precipitation

Shisō gets around 144 mm of rain over 13.4 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 44% and peaks near 46% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
146
246
345
445
544
644
744
844
944
1044
1144
1244
1345
1445
1545
1645
1745
1844
1944
2044
2144
2243
2343
2443
2543
2643
2743
2843
2943
3044
3144

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 63% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
103137311
203137311
303137212
403137212
503137212
603147112
703147013
803156913
903156913
1003166813
1103176713
1213176613
1313186513
1413186612
1513196512
1613206412
1714216311
1814216311
1915226210
202523619
212624599
222624608
232725597
242825587
253926566
2631026556
2731126555
2831227535
2941327515
3041428504
3141528494

Wind in August

Winds average 8 km/h in August.

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

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
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 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 5:15 AM to 5:38 AM, and sunset from 7:01 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:157:01
213.75:157:00
313.75:166:59
413.75:176:58
513.75:186:57
613.65:186:56
713.65:196:55
813.65:206:54
913.55:216:53
1013.55:216:52
1113.55:226:51
1213.55:236:50
1313.45:246:49
1413.45:256:48
1513.45:256:47
1613.35:266:46
1713.35:276:44
1813.35:286:43
1913.25:286:42
2013.25:296:41
2113.25:306:39
2213.15:316:38
2313.15:316:37
2413.15:326:36
2513.05:336:34
2613.05:346:33
2713.05:356:32
2812.95:356:30
2912.95:366:29
3012.85:376:27
3112.85:386:26

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.44 kWh/m².

For context, solar energy here swings from a low near 2.3 kWh/m² to a high of 5.71 kWh/m² in May across the year — August's 5.44 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.2Bright
235.2Bright
245.2Bright
255.1Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
304.9Bright
314.9Bright
Planning a trip in August

Hazard calendar for Shisō

In seasonPeak

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

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

Shisō's rainy season runs March–October, 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 Shisō?

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

4.3
Sightseeing
8th-best month of the year
6.1
Beach & pool
2nd-best month of the year

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

What to pack for Shisō in August

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

In August, Shisō sees daytime highs around 31°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near Shisō 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 at the nearest coast (about 40 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 7 to Nov 13 — about 5.3 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec16Cool

UV index in Shisō 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 Shisō peaks around July 13 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 13UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Shisō 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 Shisō is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1421 µg/m³Oct 1711 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar20Moderate
Apr21Moderate
May19Moderate
Jun17Moderate
Jul14Moderate
Aug12Moderate
Sep12Good
Oct10Good
Nov12Good
Dec11Good
Location & terrain

Where is Shisō?

Shisō sits at 35.0°N, 134.6°E, 215 m above sea level, in Japan. The nearest listed city is Yamazakichō-nakabirose, 2.0 km away.

Topography around Shisō

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

Within 3 km, the terrain around Shisō has significant variations in elevation — a maximum elevation change of 454 m around an average of 186 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,006 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,489 m.

The land around Shisō is covered by trees (70%) within 3 km, trees (84%) within 16 km, and trees (63%) and water (24%) within 80 km.

3 km
454 m
16 km
1,006 m
80 km
1,489 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Yamazakichō-nakabirose 2.0 km · Tatsunochō-tominaga 13 km · Ikaruga 16 km · Tatsuno 17 km · Sayō 19 km · Nishitawara 19 km · Aioi 22 km · Kamigōri 22 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 Shisō (34.9811°, 134.564°, elevation 215 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).