Naoshima weather in July

In July, Naoshima sees average daytime highs of 28°C and overnight lows near 24°C, with 159 mm of rain across 11.2 wet days and about 14.1 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 29°C by the end. The sky is clear or mostly clear about 26% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 18 min at the start of July to 13 h 48 min by month's end. Set against the rest of the year, July is Naoshima's 11th-clearest and 12th-windiest month. For the whole year in context, see Naoshima's year-round climate.

Daytime high
28°
2nd warmest
Overnight low
24°
11th coldest
Rainfall
159 mm
11.2 wet days
Daylight
14 h 06 min
5:07 AM – 7:13 PM
Cloud cover
67%
11th clearest
Wind
11 km/h
12th windiest
Solar energy
5.19 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 26°C in the first days to 29°C by the end.

A typical July day in Naoshima reaches about 28°C in the afternoon and slips back to 24°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, July runs about 4°C warmer than June and about 2°C cooler than August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12623
22623
32623
42623
52723
62723
72724
82724
92724
102724
112724
122724
132724
142824
152824
162825
172825
182825
192825
202825
212825
222825
232925
242925
252925
262926
272926
282926
292926
302926
312926

How July really feels in Naoshima

Once humidity and wind are folded in, July averages 10 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
10
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.

Naoshima 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 / 5810.70.6102.0
Feb10° / 619.60.510.72.2
Mar13° / 9310.4011.73.5
Apr17° / 12°10410.4012.85.3
May21° / 17°1219.6013.86.5
Jun24° / 21°15811014.36.3
Jul28° / 24°15911.2014.15.9
Aug29° / 26°867.1013.35.6
Sep27° / 23°15010.2012.26.4
Oct22° / 18°1268.8011.17.0
Nov17° / 12°607.3010.25.6
Dec12° / 609.90.19.73.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 11% 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 (%)
12278
22377
32476
42476
52476
62575
72674
82773
92773
102971
112971
123070
133169
143367
153466
163565
173664
183763
193961
204060
214357
224357
234555
244753
254852
264951
275149
285248
295347
305446
315446

Chance of precipitation in July

Any precipitation

Naoshima gets around 159 mm of rain over 11.2 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 35% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
146
246
346
445
545
644
744
843
942
1041
1140
1238
1337
1436
1535
1634
1733
1832
1931
2030
2130
2229
2329
2428
2528
2627
2726
2826
2925
3025
3124

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 59% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11635562
21532593
30430624
40428644
50426655
60324667
70323668
80321679
903206710
1003196612
1103186613
1203176515
1303156616
1402146618
1502136520
1602126422
1702116324
1802106226
190296128
200286030
210285832
220275635
230165637
240165439
250155341
260155044
270144946
280144748
290144650
300134452
310034354

Wind in July

Winds average 11 km/h in July, the calmest month.

Across July, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 18 min at the start of July to 13 h 48 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 4:59 AM to 5:17 AM, and sunset from 7:16 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:597:16
214.34:597:16
314.35:007:16
414.35:007:16
514.25:017:15
614.25:017:15
714.25:027:15
814.25:027:15
914.25:037:15
1014.25:037:15
1114.25:047:14
1214.25:047:14
1314.15:057:14
1414.15:067:13
1514.15:067:13
1614.15:077:13
1714.15:077:12
1814.15:087:12
1914.05:097:11
2014.05:097:11
2114.05:107:10
2214.05:117:09
2314.05:117:09
2413.95:127:08
2513.95:137:08
2613.95:137:07
2713.95:147:06
2813.85:157:05
2913.85:167:05
3013.85:167:04
3113.85:177:03

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.19 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 5.63 kWh/m² in May across the year — July's 5.19 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.9Bright
84.9Bright
94.9Bright
105.0Bright
115.0Bright
125.0Bright
135.1Bright
145.1Bright
155.2Bright
165.2Bright
175.3Bright
185.3Bright
195.3Bright
205.4Bright
215.4Bright
225.4Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in July

Hazard calendar for Naoshima

In seasonPeak

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

Naoshima 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 Naoshima?

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

5.9
Sightseeing
5th-best month of the year
6.5
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Naoshima for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Naoshima in July

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

In July, Naoshima sees daytime highs around 28°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Naoshima in July

The nearest coast averages about 25°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 35 km away) is warmest in August at about 28°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 3 to Nov 12 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug28Warm
Sep27Warm
Oct23Refreshing
Nov20Cool
Dec16Cool

UV index in Naoshima 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 Naoshima peaks around June 22 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJun 22UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Naoshima 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 Naoshima is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1422 µg/m³Oct 1613 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar21Moderate
Apr23Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug15Moderate
Sep13Moderate
Oct12Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Naoshima?

Naoshima sits at 34.5°N, 134.0°E, 0 m above sea level, in Japan. The nearest listed city is Tamano, 8.0 km away.

Topography around Naoshima

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

Within 3 km, the terrain around Naoshima has only modest variations in elevation — a maximum elevation change of 114 m around an average of 10 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 486 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,946 m.

The land around Naoshima is covered by water (70%) and trees (21%) within 3 km, water (61%) and trees (25%) within 16 km, and trees (56%) and water (30%) within 80 km.

3 km
114 m
16 km
486 m
80 km
1,946 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Tamano 8.0 km · Takamatsu 15 km · Sakaidechō 21 km · Okayama 22 km · Shido 22 km · Utazu 24 km · Hiragi 24 km · Takinomiya 25 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 Naoshima (34.4608°, 133.9972°, elevation 0 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).