Ōta weather in July

In July, Ōta sees average daytime highs of 29°C and overnight lows near 22°C, with 199 mm of rain across 17.8 wet days and about 14.2 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 30°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 24 min at the start of July to 13 h 54 min by month's end. Set against the rest of the year, July is Ōta's 11th-clearest and 11th-windiest month. For the whole year in context, see Ōta's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
22°
11th coldest
Rainfall
199 mm
17.8 wet days
Daylight
14 h 12 min
4:41 AM – 6:56 PM
Cloud cover
76%
11th clearest
Wind
5 km/h
11th windiest
Solar energy
4.37 kWh/m²
Travel score
4.4
out of 10

Ōta is city in Gunma Prefecture, Japan.

Density
1,278/km²
people per km²
Founded
2005

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 27°C in the first days to 30°C by the end.

A typical July day in Ōta reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 34°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)
12721
22721
32721
42721
52821
62821
72821
82821
92822
102822
112822
122822
132922
142922
152922
162922
172922
182922
192922
202923
212923
223023
233023
243023
253023
263023
273023
283023
293023
303023
313123

How July really feels in Ōta

Once humidity and wind are folded in, July averages 11 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
11
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Ōta weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 546.52.39.81.6
Feb / 537.22.510.62.0
Mar13° / 9911.91.511.73.4
Apr18° / 11111.70.212.95.5
May23° / 14°13212.9013.96.2
Jun25° / 18°17316.4014.45.4
Jul29° / 22°19917.8014.24.4
Aug30° / 23°15216.1013.44.2
Sep26° / 20°19916.1012.25.5
Oct21° / 14°18712.8011.16.0
Nov15° / 697.8010.15.1
Dec11° / 476.60.49.62.9

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 14% of July, with mostly cloudy or overcast conditions the remaining 73%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
22080
32179
42278
52377
62377
72377
82377
92377
102377
112575
122575
132575
142575
152476
162575
172575
182575
192575
202773
212773
222872
232971
243070
253169
263367
273367
283565
293664
303664
313763

Chance of precipitation in July

Any precipitation

Ōta gets around 199 mm of rain over 17.8 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 57% and peaks near 64% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
164
263
363
463
563
663
762
862
962
1062
1161
1261
1360
1460
1559
1658
1757
1857
1956
2055
2155
2254
2353
2452
2551
2650
2750
2849
2949
3049
3149

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 49% of days. Sticky, muggy-or-worse air turns up on roughly 86% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
162445250
252245270
342145290
442045310
531945330
631844351
721744371
821643381
921542401
1011541422
1111440432
1211439442
1311338462
1411336473
1511335483
1611233513
1711232514
1811130544
1911129545
2011127565
2111026576
2211024596
231923607
241922608
251821628
261820629
2707196410
2807186510
2907176511
3006166711
3106156712

Wind in July

Winds average 5 km/h in July.

Across July, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 24 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 30 minutes over July. Sunrise moves from 4:33 AM to 4:52 AM, and sunset from 6:59 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.44:336:59
214.44:336:59
314.44:336:59
414.44:346:59
514.44:346:59
614.44:356:59
714.44:356:59
814.44:366:58
914.44:366:58
1014.34:376:58
1114.34:386:58
1214.34:386:57
1314.34:396:57
1414.34:396:56
1514.34:406:56
1614.24:416:56
1714.24:416:55
1814.24:426:55
1914.24:436:54
2014.24:436:54
2114.14:446:53
2214.14:456:52
2314.14:466:52
2414.14:466:51
2514.14:476:50
2614.04:486:50
2714.04:496:49
2814.04:496:48
2913.94:506:47
3013.94:516:46
3113.94:526:45

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.37 kWh/m².

For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 5.18 kWh/m² in May across the year — July's 4.37 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.4Bright
184.4Bright
194.4Bright
204.5Bright
214.5Bright
224.5Bright
234.6Bright
244.6Bright
254.6Bright
264.7Bright
274.7Bright
284.7Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in July

Is July a good time to visit Ōta?

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

4.4
Sightseeing
7th-best month of the year
5.4
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Ōta for sightseeing.

What to pack for Ōta in July

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

In July, Ōta sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 18 days see rain.

light clothesrain gear

UV index in Ōta 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 Ōta peaks around July 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 16UV 9Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Ōta 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 Ōta is worst in April — around 26 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1426 µg/m³Dec 1814 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb21Moderate
Mar25Moderate
Apr26Moderate
May24Moderate
Jun20Moderate
Jul17Moderate
Aug16Moderate
Sep16Moderate
Oct16Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Ōta?

Ōta sits at 36.3°N, 139.4°E, 50 m above sea level, in Japan. The nearest listed city is Kamikoizumi, 7.0 km away.

Topography around Ōta

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

Within 3 km, the terrain around Ōta has only modest variations in elevation — a maximum elevation change of 203 m around an average of 55 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 646 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,579 m.

The land around Ōta is covered by artificial surfaces (67%) within 3 km, artificial surfaces (44%), cropland (27%) and trees (21%) within 16 km, and trees (61%) and artificial surfaces (21%) within 80 km.

3 km
203 m
16 km
646 m
80 km
2,579 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Kamikoizumi 7.0 km · Ashikaga 8.0 km · Menuma 9.0 km · Sakai-nakajima 11 km · Kiryū 12 km · Fukayachō 13 km · Isesaki 15 km · Tatebayashi 16 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 Ōta (36.3°, 139.3667°, elevation 50 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. 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).