Itoshima weather in June

In June, Itoshima sees average daytime highs of 26°C and overnight lows near 21°C, with 278 mm of rain across 14.9 wet days and about 14.2 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 27°C by the end. The sky is clear or mostly clear about 15% of the time in June, and the air most often feels muggy.

Daylight stretches from about 14 h 06 min at the start of June to 14 h 12 min by month's end. Set against the rest of the year, June is Itoshima's 12th-clearest and 12th-windiest month. For the whole year in context, see Itoshima's year-round climate.

Daytime high
26°
4th warmest
Overnight low
21°
9th coldest
Rainfall
278 mm
14.9 wet days
Daylight
14 h 12 min
5:13 AM – 7:26 PM
Cloud cover
78%
12th clearest
Wind
8 km/h
12th windiest
Solar energy
4.54 kWh/m²
Travel score
5.7
out of 10

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 27°C by the end.

A typical June day in Itoshima reaches about 26°C in the afternoon and slips back to 21°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 28°C. Set against its neighbours, June runs about 3°C warmer than May and about 4°C cooler than July.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12419
22419
32419
42519
52519
62519
72520
82520
92520
102520
112520
122520
132520
142520
152521
162521
172621
182621
192621
202621
212621
222622
232622
242622
252622
262622
272722
282722
292723
302723

How June really feels in Itoshima

Once humidity and wind are folded in, June 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

June sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Itoshima weather by month

How June compares with the rest of the year at a glance. June is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 6410.11.3102.1
Feb11° / 699.60.910.82.4
Mar14° / 112110.111.73.8
Apr18° / 12°12610.4012.85.7
May23° / 16°14110013.76.6
Jun26° / 21°27814.9014.25.7
Jul29° / 25°26216.60144.4
Aug31° / 26°16315013.24.1
Sep27° / 22°18013012.25.8
Oct23° / 17°1017.7011.27.2
Nov17° / 12°888.9010.35.7
Dec12° / 729.90.39.83.3

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in June, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of June, with mostly cloudy or overcast conditions the remaining 74%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23763
33763
43664
53565
63565
73367
83367
93268
103169
113070
122971
132872
142674
152674
162575
172377
182377
192377
202179
212080
221981
231981
241783
251783
261783
271684
281684
291684
301684

Chance of precipitation in June

Any precipitation

Itoshima gets around 278 mm of rain over 14.9 wet days in June, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 50% and peaks near 66% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
134
234
335
435
536
637
738
839
940
1041
1142
1244
1345
1447
1548
1650
1752
1853
1955
2056
2158
2260
2361
2462
2563
2664
2765
2866
2966
3066

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the muggy band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1624432620
2522432830
3420433030
4418433240
5316423450
6314423660
7212413870
8211404080
919394290
10183743100
11173545120
12163347130
13053148150
14042949170
15042750191
16032550211
17032350231
18032150261
19021950281
20021749311
21021548341
22021347372
23011146392
24011044423
2501842444
2601740475
2701638496
2801536508
2901434529
30014325310

Wind in June

Winds average 8 km/h in June, the calmest month.

Across June, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 06 min at the start of June to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over June. Sunrise moves from 5:15 AM to 5:16 AM, and sunset from 7:18 PM to 7:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:157:18
214.15:157:19
314.15:157:20
414.15:147:20
514.15:147:21
614.15:147:21
714.15:147:22
814.15:137:22
914.25:137:23
1014.25:137:23
1114.25:137:24
1214.25:137:24
1314.25:137:25
1414.25:137:25
1514.25:137:25
1614.25:137:26
1714.25:137:26
1814.25:137:27
1914.25:137:27
2014.25:147:27
2114.25:147:27
2214.25:147:28
2314.25:147:28
2414.25:147:28
2514.25:157:28
2614.25:157:28
2714.25:157:28
2814.25:167:28
2914.25:167:29
3014.25:167:29

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 4.54 kWh/m².

For context, solar energy here swings from a low near 2.14 kWh/m² to a high of 5.37 kWh/m² in May across the year — June's 4.54 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.2Bright
45.2Bright
55.2Bright
65.1Bright
75.1Bright
85.0Bright
95.0Bright
104.9Bright
114.8Bright
124.8Bright
134.7Bright
144.7Bright
154.6Bright
164.5Bright
174.5Bright
184.4Bright
194.3Bright
204.3Bright
214.2Bright
224.2Bright
234.1Bright
244.1Bright
254.0Bright
264.0Moderate
274.0Moderate
283.9Moderate
293.9Moderate
303.9Moderate
Planning a trip in June

Hazard calendar for Itoshima

In seasonPeak

In June, Itoshima sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Itoshima sits in the Pacific typhoon belt; the season peaks July–October.

Itoshima's rainy season runs April–September, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is June a good time to visit Itoshima?

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

5.7
Sightseeing
4th-best month of the year
5.3
Beach & pool
5th-best month of the year

June is a reasonable time to visit Itoshima for sightseeing.

What to pack for Itoshima in June

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

In June, Itoshima sees daytime highs around 26°C and nights near 21°C. Pack rain gear. Worth having: light clothes and sun protection. About 15 days see rain.

rain gearlight clothessun protection

Sea temperature near Itoshima in June

The nearest coast averages about 21°C in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 27°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 9 to Nov 20 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul24Warm
Aug27Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec18Cool

UV index in Itoshima in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Itoshima peaks around July 23 at about 9 (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 highModerateJul 23UV 9Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun7Very high
Jul9Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Itoshima in June

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.

Air quality in Itoshima is worst in April — around 25 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1225 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar25Moderate
Apr25Moderate
May23Moderate
Jun18Moderate
Jul13Moderate
Aug15Moderate
Sep13Moderate
Oct12Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Itoshima?

Itoshima sits at 33.5°N, 130.2°E, 77 m above sea level, in Japan. The nearest listed city is Maebaru-chūō, 2.0 km away.

Topography around Itoshima

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

Within 3 km, the terrain around Itoshima has only modest variations in elevation — a maximum elevation change of 163 m around an average of 22 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 970 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,212 m.

The land around Itoshima is covered by trees (34%), cropland (26%) and artificial surfaces (25%) within 3 km, trees (46%) and water (37%) within 16 km, and water (51%) and trees (34%) within 80 km.

3 km
163 m
16 km
970 m
80 km
1,212 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Maebaru-chūō 2.0 km · Katanawa 22 km · Fukuoka 22 km · Karatsu 23 km · Kasuga 26 km · Ōnojō 27 km · Shime 28 km · Ishinari 29 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 Itoshima (33.5423°, 130.1842°, elevation 77 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).