Yamada weather in August

In August, Yamada sees average daytime highs of 22°C and overnight lows near 20°C, with 167 mm of rain across 12.9 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 20% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 06 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Yamada's 10th-clearest and 10th-windiest month. For the whole year in context, see Yamada's year-round climate.

Daytime high
22°
1st warmest
Overnight low
20°
12th coldest
Rainfall
167 mm
12.9 wet days
Daylight
13 h 36 min
4:49 AM – 6:23 PM
Cloud cover
69%
10th clearest
Wind
15 km/h
10th windiest
Solar energy
4.52 kWh/m²
Travel score
6.1
out of 10

Yamada is town in Shimohei District, Iwate Prefecture, Japan.

Density
58/km²
people per km²
Founded
1889

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical August day in Yamada reaches about 22°C in the afternoon and slips back to 20°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 25°C. Set against its neighbours, August runs about 2°C warmer than July and about 2°C warmer than September.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12220
22220
32220
42220
52220
62220
72220
82220
92220
102220
112220
122220
132220
142220
152220
162220
172220
182220
192220
202220
212220
222220
232220
242220
252220
262220
272220
282220
292220
302220
312220

How August really feels in Yamada

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.

Yamada 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°739.14.89.50.0
Feb / -1°648.85.510.40.0
Mar / 10511.35.511.70.2
Apr / 10610.61131.7
May13° / 10°11810.9014.13.4
Jun16° / 14°13012.1014.74.6
Jul20° / 18°15914.3014.55.5
Aug22° / 20°16712.9013.56.1
Sep20° / 18°20113.8012.35.6
Oct16° / 13°17511.40115.1
Nov12° / 849.50.29.83.1
Dec / 809.62.69.30.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% 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 66%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23565
33565
43565
53565
63565
73565
83466
93466
103367
113466
123466
133466
143367
153367
163367
173466
183466
193466
203466
213466
223466
233466
243466
253466
263367
273367
283367
293268
303268
313268

Chance of precipitation in August

Any precipitation

Yamada gets around 167 mm of rain over 12.9 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 49% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
135
235
336
436
536
637
737
838
939
1039
1140
1241
1342
1442
1543
1643
1744
1844
1944
2045
2145
2245
2346
2446
2546
2647
2747
2847
2948
3048
3149

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 72% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
116215814
216205716
316195618
416185619
516185520
616185322
716175323
816175224
915175225
1015175126
1115175027
1215175027
1315185027
1414185027
1514184927
1614194927
1714194926
1814204926
1914204925
2025214824
2125224824
2225234823
2326234722
2426244721
2526254621
2626264620
2727274519
2827284419
2928294418
3018304317
3119314217

Wind in August

Winds average 15 km/h in August.

Across August, daily wind ranges from about 15 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 06 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 4:35 AM to 5:04 AM, and sunset from 6:41 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.14:356:41
214.14:366:40
314.04:376:39
414.04:386:38
514.04:396:37
613.94:406:36
713.94:416:35
813.94:426:33
913.84:436:32
1013.84:446:31
1113.84:456:30
1213.74:466:28
1313.74:476:27
1413.64:486:26
1513.64:486:25
1613.64:496:23
1713.54:506:22
1813.54:516:20
1913.44:526:19
2013.44:536:18
2113.44:546:16
2213.34:556:15
2313.34:566:13
2413.24:576:12
2513.24:586:10
2613.24:596:09
2713.15:006:07
2813.15:016:06
2913.05:026:04
3013.05:036:02
3113.05:046:01

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.52 kWh/m².

For context, solar energy here swings from a low near 2.04 kWh/m² to a high of 5.45 kWh/m² in May across the year — August's 4.52 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.7Bright
124.6Bright
134.6Bright
144.6Bright
154.5Bright
164.5Bright
174.5Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.1Bright
314.1Bright
Planning a trip in August

Hazard calendar for Yamada

In seasonPeak

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

Yamada 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 Yamada?

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

6.1
Sightseeing
1st-best month of the year
4.2
Beach & pool
1st-best month of the year

August is a reasonable time to visit Yamada for sightseeing.

What to pack for Yamada in August

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

In August, Yamada sees daytime highs around 22°C and nights near 20°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near Yamada in August

The nearest coast averages about 22°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 18 km away) is warmest in August at about 22°C and coldest in March near 7°C.

It's comfortable for a long swim from Jul 31 to Sep 27 — about 1.9 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan10Bracing
Feb8Bracing
Mar7Bracing
Apr8Bracing
May11Bracing
Jun15Cool
Jul19Cool
Aug22Refreshing
Sep21Refreshing
Oct18Cool
Nov16Cool
Dec13Bracing

UV index in Yamada 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 Yamada peaks around August 19 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 19UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun7Very high
Jul6High
Aug9Very high
Sep7Very high
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Yamada 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 Yamada is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1320 µg/m³Dec 169 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar19Moderate
Apr20Moderate
May18Moderate
Jun13Moderate
Jul12Good
Aug10Good
Sep10Good
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Yamada?

Yamada sits at 39.5°N, 141.9°E, 4 m above sea level, in Japan. The nearest listed city is Miyako, 20 km away.

Topography around Yamada

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

Within 3 km, the terrain around Yamada has significant variations in elevation — a maximum elevation change of 303 m around an average of 63 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,116 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,869 m.

The land around Yamada is covered by trees (59%) and water (26%) within 3 km, trees (63%) and water (33%) within 16 km, and trees (58%) and water (36%) within 80 km.

3 km
303 m
16 km
1,116 m
80 km
1,869 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Miyako 20 km · Kamaishi 22 km · Tōno 40 km · Ōfunato 48 km · Rikuzen-Takata 56 km · Hizume 68 km · Kesennuma 71 km · Yahaba 71 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 Yamada (39.4667°, 141.95°, elevation 4 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).