Oshima weather in July

In July, Oshima sees average daytime highs of 26°C and overnight lows near 23°C, with 223 mm of rain across 14.1 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 24°C in the first days to 28°C by the end. The sky is clear or mostly clear about 25% 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 Oshima's 9th-clearest and 10th-windiest month. For the whole year in context, see Oshima's year-round climate.

Daytime high
26°
2nd warmest
Overnight low
23°
11th coldest
Rainfall
223 mm
14.1 wet days
Daylight
14 h 18 min
4:49 AM – 7:08 PM
Cloud cover
67%
9th clearest
Wind
14 km/h
10th windiest
Solar energy
5.31 kWh/m²
Travel score
5.9
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 28°C by the end.

A typical July day in Oshima reaches about 26°C in the afternoon and slips back to 23°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 29°C. Set against its neighbours, July runs about 4°C warmer than June and about 2°C cooler than August.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12421
22421
32421
42421
52522
62522
72522
82522
92522
102522
112522
122522
132623
142623
152623
162623
172623
182623
192623
202723
212724
222724
232724
242724
252724
262724
272824
282824
292825
302825
312825

How July really feels in Oshima

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.

Oshima 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 / 19624.18.89.80.5
Feb / 13218.97.310.60.6
Mar / 13416.12.211.71.7
Apr14° / 11712.10.112.93.8
May18° / 14°11811.50145.8
Jun22° / 19°14711014.56.3
Jul26° / 23°22314.1014.35.9
Aug28° / 25°14811.3013.45.9
Sep25° / 22°18813.2012.36.2
Oct20° / 16°15013.10115.8
Nov15° / 11°17417.50103.6
Dec / 22323.44.49.51.4

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 63%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12971
22971
32872
42872
52872
62872
72872
82971
93070
103070
113169
123268
133367
143466
153565
163664
173763
183862
194060
204060
214159
224258
234456
244555
254654
264852
274852
285050
295050
305050
315149

Chance of precipitation in July

Any precipitation

Oshima gets around 223 mm of rain over 14.1 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 45% and peaks near 54% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
151
251
352
452
553
653
754
854
954
1054
1153
1253
1352
1451
1550
1649
1747
1846
1944
2042
2141
2239
2338
2436
2535
2634
2733
2832
2932
3031
3131

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 53% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
122055230
221854260
311654290
411453320
511253340
611151370
701049400
80948430
90846451
100744471
110643501
120641521
130539542
140537553
150535573
160433594
170431605
180429616
190327637
200325648
210324649
2203226411
2302206612
2402196514
2502176615
2602166517
2701156519
2801146421
2901136422
3001126324
3101116325

Wind in July

Winds average 14 km/h in July.

Across July, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

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 4:41 AM to 5:01 AM, and sunset from 7:12 PM to 6:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:417:12
214.54:417:11
314.54:427:11
414.54:427:11
514.54:437:11
614.54:437:11
714.54:447:11
814.44:447:11
914.44:457:10
1014.44:457:10
1114.44:467:10
1214.44:477:09
1314.44:477:09
1414.34:487:09
1514.34:497:08
1614.34:497:08
1714.34:507:07
1814.34:517:07
1914.24:517:06
2014.24:527:06
2114.24:537:05
2214.24:547:04
2314.24:547:04
2414.14:557:03
2514.14:567:02
2614.14:577:01
2714.14:577:01
2814.04:587:00
2914.04:596:59
3014.05:006:58
3113.95:016:57

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.31 kWh/m².

For context, solar energy here swings from a low near 1.89 kWh/m² to a high of 5.85 kWh/m² in May across the year — July's 5.31 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.2Bright
145.2Bright
155.2Bright
165.3Bright
175.3Bright
185.3Bright
195.4Bright
205.4Bright
215.5Bright
225.5Bright
235.6Bright
245.6Bright
255.6Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.8Bright
315.8Bright
Planning a trip in July

Hazard calendar for Oshima

In seasonPeak

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

Oshima 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 Oshima?

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

5.9
Sightseeing
3rd-best month of the year
5.8
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Oshima for sightseeing.

What to pack for Oshima in July

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

In July, Oshima sees daytime highs around 26°C and nights near 23°C. Pack rain gear. Worth having: light clothes and sun protection. About 14 days see rain.

rain gearlight clothessun protection

Sea temperature near Oshima in July

The nearest coast averages about 24°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 18 km away) is warmest in August at about 27°C and coldest in March near 11°C.

It's comfortable for a long swim from Jun 17 to Nov 3 — about 4.6 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar11Bracing
Apr12Bracing
May16Cool
Jun20Cool
Jul24Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Oshima 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 Oshima peaks around August 14 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 14UV 10Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug10Very high
Sep9Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Oshima 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 Oshima is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1722 µg/m³Oct 1110 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar21Moderate
Apr23Moderate
May21Moderate
Jun18Moderate
Jul15Moderate
Aug12Good
Sep10Good
Oct10Good
Nov11Good
Dec10Good
Location & terrain

Where is Oshima?

Oshima sits at 37.0°N, 136.8°E, 11 m above sea level, in Japan. The nearest listed city is Hakui, 12 km away.

Topography around Oshima

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

Within 3 km, the terrain around Oshima has only modest variations in elevation — a maximum elevation change of 84 m around an average of 11 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 478 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,375 m.

The land around Oshima is covered by water (40%) and trees (30%) within 3 km, water (44%) and trees (40%) within 16 km, and water (55%) and trees (34%) within 80 km.

3 km
84 m
16 km
478 m
80 km
2,375 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Hakui 12 km · Hitoto 12 km · Nanao 19 km · Himimachi 24 km · Himi 24 km · Kahoku 26 km · Anamizu 30 km · Takaoka 34 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 Oshima (36.9871°, 136.7725°, elevation 11 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).