Shimotsuke weather in August

In August, Shimotsuke sees average daytime highs of 29°C and overnight lows near 22°C, with 207 mm of rain across 19.6 wet days and about 13.4 hours of daylight. It is the 1st-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 30°C in the first days to 28°C by the end. The sky is clear or mostly clear about 15% of the time in August, and the air most often feels oppressive.

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 Shimotsuke's 10th-clearest and 10th-windiest month. For the whole year in context, see Shimotsuke's year-round climate.

Daytime high
29°
1st warmest
Overnight low
22°
12th coldest
Rainfall
207 mm
19.6 wet days
Daylight
13 h 24 min
5:03 AM – 6:27 PM
Cloud cover
71%
10th clearest
Wind
6 km/h
10th windiest
Solar energy
4.37 kWh/m²
Travel score
4.1
out of 10

Shimotsuke is city in Tochigi Prefecture, Japan.

Density
808/km²
people per km²
Founded
2006

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 30°C in the first days to 28°C by the end.

A typical August day in Shimotsuke reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°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)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
162923
172923
182922
192922
202922
212922
222922
232922
242922
252922
262922
272822
282822
292822
302822
312821

How August really feels in Shimotsuke

Once humidity and wind are folded in, August averages 19 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
19
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.

Shimotsuke weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°556.32.59.81.2
Feb / -0°547.12.610.61.6
Mar12° / 11312.62.311.73.0
Apr17° / 13613.40.312.95.0
May22° / 13°17314.9013.95.8
Jun25° / 17°20418.4014.45.2
Jul28° / 21°26221.5014.24.2
Aug29° / 22°20719.6013.44.1
Sep26° / 19°23917.8012.25.2
Oct20° / 13°20614.8011.15.6
Nov15° / 919.2010.14.6
Dec10° / 556.80.69.62.4

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 68%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23169
33268
43268
53367
63268
73268
83367
93367
103268
113268
123268
133268
143169
153169
163169
173169
183169
193169
203268
213268
223268
233268
243268
253268
263268
273367
283367
293466
303466
313466

Chance of precipitation in August

Any precipitation

Shimotsuke gets around 207 mm of rain over 19.6 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 63% and peaks near 64% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
162
262
362
463
563
663
763
864
964
1064
1164
1264
1364
1464
1564
1664
1764
1863
1963
2063
2163
2262
2362
2462
2562
2662
2762
2862
2962
3062
3162

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 59% of days. Sticky, muggy-or-worse air turns up on roughly 91% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
106176512
206166612
306166513
406166513
506166513
606166513
706166513
806166513
916166512
1016166512
1116166512
1216176412
1316176511
1416186411
1516196311
1626206210
1726216110
182722609
192723599
202724598
213825568
223826567
233827557
243929536
253930535
2631031515
2721033514
2821134494
2921135483
3021236463
3131337453

Wind in August

Winds average 6 km/h in August.

Across August, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 4:50 AM to 5:15 AM, and sunset from 6:43 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.94:506:43
213.84:516:42
313.84:526:41
413.84:536:40
513.84:546:39
613.74:546:38
713.74:556:37
813.74:566:36
913.64:576:35
1013.64:586:34
1113.64:596:33
1213.54:596:31
1313.55:006:30
1413.55:016:29
1513.45:026:28
1613.45:036:27
1713.45:046:25
1813.35:046:24
1913.35:056:23
2013.35:066:21
2113.25:076:20
2213.25:086:19
2313.15:086:17
2413.15:096:16
2513.15:106:15
2613.05:116:13
2713.05:126:12
2813.05:136:10
2912.95:136:09
3012.95:146:08
3112.95:156:06

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.37 kWh/m².

For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 5.1 kWh/m² in May across the year — August's 4.37 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.6Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.2Bright
214.2Bright
224.2Bright
234.1Bright
244.1Bright
254.1Bright
264.1Bright
274.0Bright
284.0Bright
294.0Moderate
304.0Moderate
313.9Moderate
Planning a trip in August

Hazard calendar for Shimotsuke

In seasonPeak

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

Shimotsuke's rainy season runs April–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Shimotsuke?

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

4.1
Sightseeing
8th-best month of the year
5.3
Beach & pool
1st-best month of the year

August is a reasonable time to visit Shimotsuke for sightseeing.

What to pack for Shimotsuke in August

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

In August, Shimotsuke sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 20 days see rain.

light clothesrain gear

Sea temperature near Shimotsuke 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 68 km away) is warmest in August at about 24°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 24 to Oct 28 — about 4.2 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun19Cool
Jul22Refreshing
Aug24Warm
Sep23Refreshing
Oct21Refreshing
Nov19Cool
Dec16Cool

UV index in Shimotsuke 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 Shimotsuke 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 (moderate).

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
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Shimotsuke 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 Shimotsuke 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).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 179 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug13Moderate
Sep11Good
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Shimotsuke?

Shimotsuke sits at 36.4°N, 139.9°E, 66 m above sea level, in Japan. The nearest listed city is Kaminokawa, 5.0 km away.

Topography around Shimotsuke

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

Within 3 km, the terrain around Shimotsuke has only modest variations in elevation — a maximum elevation change of 34 m around an average of 60 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 218 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,553 m.

The land around Shimotsuke is covered by cropland (47%) and artificial surfaces (33%) within 3 km, cropland (45%) and artificial surfaces (34%) within 16 km, and trees (51%), cropland (21%) and artificial surfaces (20%) within 80 km.

3 km
34 m
16 km
218 m
80 km
2,553 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Kaminokawa 5.0 km · Mibu 6.0 km · Tochigi 12 km · Yūki 13 km · Mooka 14 km · Oyama 14 km · Chikusei 15 km · Shimodate 16 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 Shimotsuke (36.4132°, 139.8662°, elevation 66 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. 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).