Yamagata weather in July

In July, Yamagata sees average daytime highs of 26°C and overnight lows near 19°C, with 189 mm of rain across 17.4 wet days and about 14.4 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 27°C by the end. The sky is clear or mostly clear about 11% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 36 min at the start of July to 14 hours by month's end. Set against the rest of the year, July is Yamagata's 12th-clearest and 11th-windiest month. For the whole year in context, see Yamagata's year-round climate.

Daytime high
26°
2nd warmest
Overnight low
19°
11th coldest
Rainfall
189 mm
17.4 wet days
Daylight
14 h 24 min
4:32 AM – 6:57 PM
Cloud cover
78%
12th clearest
Wind
6 km/h
11th windiest
Solar energy
4.23 kWh/m²
Travel score
5.4
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 27°C by the end.

A typical July day in Yamagata reaches about 26°C in the afternoon and slips back to 19°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 30°C. Set against its neighbours, July runs about 3°C warmer than June and about 1°C cooler than August.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12417
22417
32417
42417
52418
62418
72418
82518
92518
102518
112518
122518
132519
142519
152519
162519
172619
182619
192619
202619
212619
222619
232620
242720
252720
262720
272720
282720
292720
302720
312820

How July really feels in Yamagata

Once humidity and wind are folded in, July 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

July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Yamagata weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°12621.723.19.60.0
Feb / -5°9017.918.210.50.0
Mar / -2°10916.912.211.70.5
Apr13° / 9413.72.7133.3
May19° / 91120145.6
Jun22° / 15°11912.5014.66.0
Jul26° / 19°18917.4014.45.4
Aug27° / 20°14714.8013.55.6
Sep23° / 16°12613012.35.9
Oct17° / 11812.40115.0
Nov11° / 9515.34.19.92.2
Dec / -2°1202016.39.40.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of July, with mostly cloudy or overcast conditions the remaining 78%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21981
31981
41981
51981
61981
71981
81981
91981
101981
111981
122080
132080
142080
152179
162179
172179
182278
192278
202278
212476
222575
232575
242674
252773
262773
272872
282872
293070
303070
313169

Chance of precipitation in July

Any precipitation

Yamagata gets around 189 mm of rain over 17.4 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 55% and peaks near 61% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
155
256
357
457
558
659
760
860
960
1061
1161
1260
1360
1460
1559
1658
1758
1857
1956
2055
2154
2253
2352
2451
2550
2650
2749
2848
2948
3048
3147

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 45% of days. Sticky, muggy-or-worse air turns up on roughly 61% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
142143302
242042323
331941333
421841354
521740374
611639385
711538396
811437417
911436428
1001335438
1101334449
12012334510
13012324611
14011304712
15011294713
16010284814
17010264915
1809255016
1908235217
2008225218
2107215220
2207205221
2306195223
2406185125
2506175027
2606165029
2705154931
2805144833
2905134734
3005134636
3105124637

Wind in July

Winds average 6 km/h in July.

Across July, 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 July

DaylightNight

Daylight runs from about 14 h 36 min at the start of July to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:23 AM to 4:44 AM, and sunset from 7:01 PM to 6:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:237:01
214.64:237:01
314.64:247:01
414.64:247:01
514.64:257:00
614.64:257:00
714.64:267:00
814.64:267:00
914.54:276:59
1014.54:286:59
1114.54:286:59
1214.54:296:58
1314.54:306:58
1414.54:306:58
1514.44:316:57
1614.44:326:57
1714.44:326:56
1814.44:336:56
1914.44:346:55
2014.34:356:54
2114.34:356:54
2214.34:366:53
2314.34:376:52
2414.24:386:52
2514.24:396:51
2614.24:396:50
2714.24:406:49
2814.14:416:48
2914.14:426:48
3014.14:436:47
3114.04:446:46

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.23 kWh/m².

For context, solar energy here swings from a low near 1.85 kWh/m² to a high of 5.28 kWh/m² in May across the year — July's 4.23 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.2Bright
184.2Bright
194.2Bright
204.3Bright
214.3Bright
224.3Bright
234.4Bright
244.4Bright
254.5Bright
264.5Bright
274.5Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in July

Hazard calendar for Yamagata

In seasonPeak

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

Yamagata 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 July a good time to visit Yamagata?

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

5.4
Sightseeing
5th-best month of the year
5.1
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Yamagata for sightseeing.

What to pack for Yamagata in July

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

In July, Yamagata sees daytime highs around 26°C and nights near 19°C. Pack rain gear. Worth having: light clothes. About 17 days see rain.

rain gearlight clothes

Sea temperature near Yamagata in July

The nearest coast averages about 21°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 67 km away) is warmest in August at about 24°C and coldest in March near 9°C.

It's comfortable for a long swim from Jul 7 to Oct 10 — about 3.2 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb9Bracing
Mar9Bracing
Apr10Bracing
May14Bracing
Jun18Cool
Jul21Refreshing
Aug24Refreshing
Sep23Refreshing
Oct19Cool
Nov17Cool
Dec14Bracing

UV index in Yamagata in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Yamagata peaks around August 15 at about 9 (very high) — 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 15UV 9Dec 22UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Yamagata in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Yamagata 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 Yamagata?

Yamagata sits at 38.2°N, 140.4°E, 321 m above sea level, in Japan. The nearest listed city is Kaminoyama, 12 km away.

Topography around Yamagata

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

Within 3 km, the terrain around Yamagata has large variations in elevation — a maximum elevation change of 600 m around an average of 312 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,754 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,110 m.

The land around Yamagata is covered by trees (65%) and artificial surfaces (32%) within 3 km, trees (73%) within 16 km, and trees (75%) within 80 km.

3 km
600 m
16 km
1,754 m
80 km
2,110 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Kaminoyama 12 km · Tendō 13 km · Sagae 18 km · Yachi 22 km · Higashine 23 km · Murayama 27 km · Takahata 30 km · Nanyō 31 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 Yamagata (38.2333°, 140.3667°, elevation 321 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).