Obanazawa weather in August

In August, Obanazawa sees average daytime highs of 27°C and overnight lows near 20°C, with 158 mm of rain across 15.5 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 26°C by the end. The sky is clear or mostly clear about 17% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 14 hours at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Obanazawa's 9th-clearest and 11th-windiest month. For the whole year in context, see Obanazawa's year-round climate.

Daytime high
27°
1st warmest
Overnight low
20°
12th coldest
Rainfall
158 mm
15.5 wet days
Daylight
13 h 30 min
4:57 AM – 6:28 PM
Cloud cover
72%
9th clearest
Wind
6 km/h
11th windiest
Solar energy
4.21 kWh/m²
Travel score
5.5
out of 10

Obanazawa is city in Yamagata Prefecture, Japan.

Density
56/km²
people per km²
Founded
1959

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 28°C in the first days to 26°C by the end.

A typical August day in Obanazawa reaches about 27°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 32°C. Set against its neighbours, August runs about 2°C warmer than July and about 4°C warmer than September.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12821
22821
32821
42821
52821
62821
72821
82821
92821
102821
112821
122821
132721
142721
152720
162720
172720
182720
192720
202720
212720
222720
232720
242720
252620
262620
272619
282619
292619
302619
312619

How August really feels in Obanazawa

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.

Obanazawa weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°9517.919.99.60.0
Feb / -4°6915.115.210.50.0
Mar / -1°9814.99.511.70.8
Apr14° / 9513.12133.6
May19° / 10°10012014.15.7
Jun22° / 15°12312.5014.65.9
Jul26° / 19°18817.2014.45.4
Aug27° / 20°15815.5013.55.5
Sep23° / 16°14414.2012.35.8
Oct17° / 12612.80115.1
Nov11° / 8414.12.79.92.5
Dec / -1°9517.613.39.40.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 15% of August, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23268
33268
43268
53268
63169
73169
83169
93169
103169
113268
123268
133268
143169
153169
163268
173169
183268
193268
203367
213367
223268
233268
243169
253169
263169
273169
283169
293169
303169
313169

Chance of precipitation in August

Any precipitation

Obanazawa gets around 158 mm of rain over 15.5 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 50% and peaks near 52% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
146
245
345
446
546
646
746
847
948
1048
1149
1250
1350
1451
1551
1652
1752
1852
1952
2052
2152
2252
2352
2452
2552
2652
2752
2852
2951
3051
3151

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 40% of days. Sticky, muggy-or-worse air turns up on roughly 76% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
141337451
241336461
341335471
441334471
541434481
641434481
741434481
841434471
941434471
1041434461
1141434461
1241435451
1341535451
1451535441
1551536431
1651636421
1751636411
1861636401
1961736391
2071836381
2171836371
2281936361
2382036351
2482136341
2592236321
2692337311
2792437291
28102537281
29102637261
30112737251
31112837231

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 14 hours 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 66 minutes over August. Sunrise moves from 4:43 AM to 5:11 AM, and sunset from 6:45 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.04:436:45
214.04:446:44
314.04:456:43
413.94:466:42
513.94:476:41
613.94:486:40
713.84:496:39
813.84:506:38
913.84:516:37
1013.74:526:36
1113.74:526:34
1213.74:536:33
1313.64:546:32
1413.64:556:31
1513.64:566:29
1613.54:576:28
1713.54:586:27
1813.44:596:25
1913.45:006:24
2013.45:016:22
2113.35:026:21
2213.35:036:20
2313.25:036:18
2413.25:046:17
2513.25:056:15
2613.15:066:14
2713.15:076:12
2813.05:086:11
2913.05:096:09
3013.05:106:08
3112.95:116:06

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.21 kWh/m².

For context, solar energy here swings from a low near 1.87 kWh/m² to a high of 5.27 kWh/m² in May across the year — August's 4.21 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.3Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.1Bright
214.0Bright
224.0Bright
234.0Bright
244.0Moderate
254.0Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.8Moderate
313.8Moderate
Planning a trip in August

Hazard calendar for Obanazawa

In seasonPeak

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

Obanazawa 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 Obanazawa?

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

5.5
Sightseeing
4th-best month of the year
5.6
Beach & pool
1st-best month of the year

August is a reasonable time to visit Obanazawa for sightseeing.

What to pack for Obanazawa in August

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

In August, Obanazawa sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. About 16 days see rain.

light clothesrain gear

Sea temperature near Obanazawa in August

The nearest coast averages about 26°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 26°C and coldest in March near 9°C.

It's comfortable for a long swim from Jun 24 to Oct 27 — about 4.1 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar9Bracing
Apr10Bracing
May14Bracing
Jun19Cool
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct21Refreshing
Nov18Cool
Dec15Bracing

UV index in Obanazawa 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 Obanazawa peaks around August 18 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 18UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul7High
Aug9Very high
Sep8Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Obanazawa 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 Obanazawa is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1622 µg/m³Dec 1710 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar21Moderate
Apr22Moderate
May21Moderate
Jun16Moderate
Jul14Moderate
Aug12Moderate
Sep12Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Obanazawa?

Obanazawa sits at 38.6°N, 140.4°E, 93 m above sea level, in Japan. The nearest listed city is Murayama, 15 km away.

Topography around Obanazawa

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

Within 3 km, the terrain around Obanazawa has only modest variations in elevation — a maximum elevation change of 226 m around an average of 102 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,175 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,215 m.

The land around Obanazawa is covered by cropland (41%) and trees (32%) within 3 km, trees (78%) within 16 km, and trees (71%) within 80 km.

3 km
226 m
16 km
1,175 m
80 km
2,215 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Murayama 15 km · Higashine 18 km · Shinjō 19 km · Yachi 22 km · Tendō 28 km · Sagae 28 km · Naka-niida 39 km · Yamagata 41 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 Obanazawa (38.6033°, 140.4019°, elevation 93 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).