Ōmiya weather in July

In July, Ōmiya sees average daytime highs of 27°C and overnight lows near 22°C, with 178 mm of rain across 16 wet days and about 14.2 hours of daylight. It is the 2nd-warmest and 3rd-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 13% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 30 min at the start of July to 13 h 54 min by month's end. Set against the rest of the year, July is Ōmiya's 11th-clearest and 12th-windiest month. For the whole year in context, see Ōmiya's year-round climate.

Daytime high
27°
2nd warmest
Overnight low
22°
11th coldest
Rainfall
178 mm
16 wet days
Daylight
14 h 18 min
4:36 AM – 6:52 PM
Cloud cover
77%
11th clearest
Wind
9 km/h
12th windiest
Solar energy
4.75 kWh/m²
Travel score
5.4
out of 10

Ōmiya is city in Ibaraki Prefecture, Japan.

Density
79/km²
people per km²
Founded
2004

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 Ōmiya reaches about 27°C in the afternoon and slips back to 22°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 31°C. Set against its neighbours, July runs about 4°C warmer than June and about 1°C cooler than August.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12520
22520
32520
42521
52521
62621
72621
82621
92621
102621
112621
122621
132622
142622
152722
162722
172722
182722
192722
202722
212722
222722
232723
242823
252823
262823
272823
282823
292823
302823
312823

How July really feels in Ōmiya

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.

Ōmiya weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 637.31.59.81.4
Feb / 637.3210.61.5
Mar11° / 11512.51.211.72.7
Apr16° / 12111.90.212.94.5
May20° / 14°14412.5013.95.8
Jun23° / 18°15114.7014.45.6
Jul27° / 22°17816014.25.4
Aug28° / 23°13114013.45.4
Sep25° / 20°17914.7012.25.8
Oct20° / 15°19612.7011.15.9
Nov15° / 989.5010.14.7
Dec10° / 647.60.39.52.6

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 12% of July, with mostly cloudy or overcast conditions the remaining 75%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21981
32080
42080
52179
62278
72278
82278
92278
102278
112278
122179
132278
142278
152278
162278
172278
182278
192377
202476
212476
222575
232773
242872
252971
263169
273268
283367
293466
303466
313664

Chance of precipitation in July

Any precipitation

Ōmiya gets around 178 mm of rain over 16 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 51% and peaks near 57% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
157
257
357
457
557
657
757
857
956
1056
1155
1255
1354
1453
1552
1652
1751
1850
1950
2049
2148
2248
2347
2446
2545
2644
2744
2843
2942
3042
3142

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 47% of days. Sticky, muggy-or-worse air turns up on roughly 83% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1152443271
2052243291
3042142311
4042141331
5042040341
6031939362
7031938382
8031837402
9031836413
10031734433
11031733444
12031632454
13031631464
14031630475
15031528486
16031427496
17031426507
18031325518
19031224529
20031124539
210210235510
220210225511
23029225512
24028215613
25027205714
26027205615
27026195716
28016185817
29016175818
30016165819
31016155820

Wind in July

Winds average 9 km/h in July, the calmest month.

Across July, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 30 min at the start of July to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:28 AM to 4:47 AM, and sunset from 6:56 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:286:56
214.54:286:56
314.54:286:56
414.44:296:56
514.44:296:55
614.44:306:55
714.44:306:55
814.44:316:55
914.44:326:55
1014.44:326:54
1114.44:336:54
1214.34:336:54
1314.34:346:53
1414.34:356:53
1514.34:356:52
1614.34:366:52
1714.34:376:52
1814.24:376:51
1914.24:386:50
2014.24:396:50
2114.24:396:49
2214.14:406:49
2314.14:416:48
2414.14:426:47
2514.14:426:47
2614.04:436:46
2714.04:446:45
2814.04:456:44
2914.04:456:44
3013.94:466:43
3113.94:476:42

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.75 kWh/m².

For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 5.33 kWh/m² in May across the year — July's 4.75 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.9Bright
234.9Bright
244.9Bright
255.0Bright
265.0Bright
275.0Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in July

Hazard calendar for Ōmiya

In seasonPeak

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

Ōmiya 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 Ōmiya?

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
5.5
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Ōmiya for sightseeing.

What to pack for Ōmiya in July

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

In July, Ōmiya sees daytime highs around 27°C and nights near 22°C. Pack rain gear. Worth having: light clothes and sun protection. About 16 days see rain.

rain gearlight clothessun protection

Sea temperature near Ōmiya in July

The nearest coast averages about 22°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 27 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 Ōmiya in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ōmiya peaks around July 24 at about 10 (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 24UV 10Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Ōmiya 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 Ōmiya is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1821 µg/m³Dec 189 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug13Moderate
Sep11Good
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Ōmiya?

Ōmiya sits at 36.5°N, 140.4°E, 56 m above sea level, in Japan. The nearest listed city is Hitachiomiya, 2.0 km away.

Topography around Ōmiya

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

Within 3 km, the terrain around Ōmiya has only modest variations in elevation — a maximum elevation change of 123 m around an average of 52 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 511 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,902 m.

The land around Ōmiya is covered by trees (44%), artificial surfaces (23%) and cropland (22%) within 3 km, trees (66%) within 16 km, and trees (48%) and water (23%) within 80 km.

3 km
123 m
16 km
511 m
80 km
1,902 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Hitachiomiya 2.0 km · Ishitsuka 8.0 km · Hitachi-ota 10 km · Tokai 16 km · Inada 16 km · Funaishikawa 16 km · Hitachi-Naka 20 km · Katsuta 21 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 Ōmiya (36.55°, 140.4167°, elevation 56 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).