Kōriyama weather in July

In July, Kōriyama sees average daytime highs of 26°C and overnight lows near 19°C, with 173 mm of rain across 17.3 wet days and about 14.3 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 25°C in the first days to 28°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 30 min at the start of July to 14 hours by month's end. Set against the rest of the year, July is Kōriyama's 12th-clearest and 11th-windiest month. For the whole year in context, see Kōriyama's year-round climate.

Daytime high
26°
2nd warmest
Overnight low
19°
11th coldest
Rainfall
173 mm
17.3 wet days
Daylight
14 h 18 min
4:34 AM – 6:54 PM
Cloud cover
79%
12th clearest
Wind
7 km/h
11th windiest
Solar energy
4.41 kWh/m²
Travel score
5.2
out of 10

Kōriyama is city in Fukushima prefecture, Japan.

Density
433/km²
people per km²
Founded
1924

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 25°C in the first days to 28°C by the end.

A typical July day in Kōriyama 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 31°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)
12518
22518
32518
42518
52518
62518
72519
82619
92619
102619
112619
122619
132619
142619
152619
162620
172720
182720
192720
202720
212720
222720
232720
242720
252820
262821
272821
282821
292821
302821
312821

How July really feels in Kōriyama

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.

Kōriyama 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 / -3°579.18.89.70.0
Feb / -3°478.36.910.60.0
Mar / -0°8611.25.611.71.4
Apr14° / 9511.51.412.94.1
May20° / 11°9711.50145.9
Jun23° / 15°11213.1014.55.9
Jul26° / 19°17317.3014.35.2
Aug28° / 21°13014.7013.45.4
Sep24° / 17°15113.2012.36.0
Oct18° / 10°13610.80115.5
Nov12° / 678.10.5103.2
Dec / -1°499.35.39.50.5

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 77%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11981
21981
31981
42080
52080
62080
72080
82080
92080
102080
112179
122179
132179
142179
152179
162179
172278
182278
192377
202377
212476
222476
232575
242674
252872
262872
272971
282971
292971
303070
313070

Chance of precipitation in July

Any precipitation

Kōriyama gets around 173 mm of rain over 17.3 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 60% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
154
254
355
456
556
657
758
859
959
1059
1160
1260
1359
1459
1559
1658
1758
1857
1957
2056
2155
2254
2353
2452
2551
2650
2749
2848
2948
3047
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 (%)
152243292
242042312
331942333
431841353
521740364
621639385
721538396
821437407
911436417
1011335428
1111334439
12112324410
13112314511
14111294612
15111284713
16110264814
17110254915
1819235017
1919225018
2018205120
2118195121
2218185122
2307175224
2407165225
2506155227
2606145228
2706135130
2806125032
2906124933
3005114835
3105114736

Wind in July

Winds average 7 km/h in July.

Across July, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 30 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 30 minutes over July. Sunrise moves from 4:25 AM to 4:45 AM, and sunset from 6:58 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:256:58
214.54:266:58
314.54:266:58
414.54:276:58
514.54:276:58
614.54:286:58
714.54:286:58
814.54:296:57
914.54:296:57
1014.44:306:57
1114.44:316:56
1214.44:316:56
1314.44:326:56
1414.44:326:55
1514.44:336:55
1614.34:346:54
1714.34:346:54
1814.34:356:53
1914.34:366:53
2014.34:376:52
2114.24:376:52
2214.24:386:51
2314.24:396:50
2414.24:406:50
2514.14:406:49
2614.14:416:48
2714.14:426:47
2814.14:436:46
2914.04:446:46
3014.04:456:45
3114.04:456:44

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.41 kWh/m².

For context, solar energy here swings from a low near 2.19 kWh/m² to a high of 5.38 kWh/m² in May across the year — July's 4.41 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.4Bright
194.4Bright
204.4Bright
214.5Bright
224.5Bright
234.5Bright
244.6Bright
254.6Bright
264.6Bright
274.7Bright
284.7Bright
294.7Bright
304.8Bright
314.8Bright
Planning a trip in July

Hazard calendar for Kōriyama

In seasonPeak

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

Kōriyama 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 Kōriyama?

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

5.2
Sightseeing
6th-best month of the year
5.2
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Kōriyama for sightseeing.

What to pack for Kōriyama in July

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

In July, Kōriyama 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 Kōriyama 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 66 km away) is warmest in August at about 23°C and coldest in March near 10°C.

It's comfortable for a long swim from Jul 9 to Oct 12 — about 3.2 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar10Bracing
Apr12Bracing
May14Bracing
Jun18Cool
Jul21Refreshing
Aug23Refreshing
Sep23Refreshing
Oct20Cool
Nov17Cool
Dec15Cool

UV index in Kōriyama in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Kōriyama 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 (low).

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
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Low

Air quality in Kōriyama 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 Kōriyama is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 1810 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug12Good
Sep11Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Kōriyama?

Kōriyama sits at 37.4°N, 140.4°E, 236 m above sea level, in Japan. The nearest listed city is Miharu, 10 km away.

Topography around Kōriyama

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

Within 3 km, the terrain around Kōriyama has only modest variations in elevation — a maximum elevation change of 55 m around an average of 236 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 803 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,110 m.

The land around Kōriyama is covered by artificial surfaces (79%) within 3 km, trees (56%) and cropland (26%) within 16 km, and trees (73%) within 80 km.

3 km
55 m
16 km
803 m
80 km
2,110 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Miharu 10 km · Motomiya 13 km · Sukagawa 13 km · Funehikimachi-funehiki 18 km · Tamura 20 km · Nihommatsu 21 km · Yabuki 23 km · Ishikawa 28 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 Kōriyama (37.4°, 140.3833°, elevation 236 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).