Kainan weather in June

In June, Kainan sees average daytime highs of 25°C and overnight lows near 20°C, with 232 mm of rain across 14.1 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 26°C by the end. The sky is clear or mostly clear about 14% 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 18 min by month's end. Set against the rest of the year, June is Kainan's 12th-clearest and 12th-windiest month. For the whole year in context, see Kainan's year-round climate.

Daytime high
25°
4th warmest
Overnight low
20°
9th coldest
Rainfall
232 mm
14.1 wet days
Daylight
14 h 18 min
4:51 AM – 7:07 PM
Cloud cover
78%
12th clearest
Wind
10 km/h
12th windiest
Solar energy
4.93 kWh/m²
Travel score
5.8
out of 10

Kainan is city in Wakayama Prefecture, Japan.

Density
479/km²
people per km²
Founded
2005

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

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 26°C by the end.

A typical June day in Kainan reaches about 25°C in the afternoon and slips back to 20°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 27°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)
12417
22418
32418
42418
52418
62418
72418
82419
92419
102419
112519
122519
132519
142519
152520
162520
172520
182520
192520
202520
212521
222521
232621
242621
252621
262621
272622
282622
292622
302722

How June really feels in Kainan

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.

Kainan 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
Jan / 8211.41.6101.8
Feb10° / 8510.71.710.72.1
Mar13° / 12512.50.211.73.5
Apr18° / 11°12611012.85.6
May22° / 15°14910.7013.86.5
Jun25° / 20°23214.1014.25.8
Jul29° / 24°19513.50145.1
Aug30° / 25°11411.4013.34.7
Sep27° / 22°18213012.25.8
Oct22° / 16°17910.9011.16.7
Nov17° / 11°1008.8010.25.5
Dec12° / 8610.70.89.83.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in June, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 10% of June, with mostly cloudy or overcast conditions the remaining 76%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23565
33367
43367
53268
63169
73070
82971
92971
102773
112773
122575
132575
142476
152377
162278
172080
182080
192080
201981
211882
221882
231882
241882
251882
261981
272080
282179
292179
302179

Chance of precipitation in June

Any precipitation

Kainan gets around 232 mm of rain over 14.1 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 48% and peaks near 57% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
134
235
336
436
537
638
739
840
941
1042
1144
1245
1347
1448
1549
1651
1752
1852
1953
2054
2154
2255
2356
2456
2557
2657
2757
2857
2957
3057

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 49% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11736361010
21535371110
31434391310
41232401410
51130411620
61029421720
7927421930
8825432140
9723432340
10621422550
11519422860
12417413070
13416403280
143143834100
153133736110
163113538130
172103340150
18293141170
19282942190
20272743210
21162544240
22152344270
23142144300
24141943330
25131743360
26131542391
27021341421
28021240451
29021038481
3001937521

Wind in June

Winds average 10 km/h in June, the calmest month.

Across June, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 06 min at the start of June to 14 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:54 AM to 4:55 AM, and sunset from 7:00 PM to 7:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.14:547:00
214.14:537:00
314.14:537:01
414.14:537:02
514.24:527:02
614.24:527:03
714.24:527:03
814.24:527:04
914.24:527:04
1014.24:527:05
1114.24:517:05
1214.24:517:06
1314.24:517:06
1414.34:517:07
1514.34:517:07
1614.34:517:07
1714.34:527:08
1814.34:527:08
1914.34:527:08
2014.34:527:09
2114.34:527:09
2214.34:527:09
2314.34:527:09
2414.34:537:09
2514.34:537:10
2614.34:537:10
2714.34:547:10
2814.34:547:10
2914.34:547:10
3014.34:557:10

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 4.93 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 5.56 kWh/m² in May across the year — June's 4.93 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.3Bright
55.3Bright
65.3Bright
75.2Bright
85.2Bright
95.2Bright
105.1Bright
115.1Bright
125.0Bright
135.0Bright
145.0Bright
154.9Bright
164.9Bright
174.8Bright
184.8Bright
194.8Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in June

Hazard calendar for Kainan

In seasonPeak

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

Kainan 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 June a good time to visit Kainan?

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

5.8
Sightseeing
3rd-best month of the year
5.3
Beach & pool
4th-best month of the year

June is a reasonable time to visit Kainan for sightseeing.

What to pack for Kainan in June

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

In June, Kainan sees daytime highs around 25°C and nights near 20°C. Pack rain gear. Worth having: light clothes and sun protection. About 14 days see rain.

rain gearlight clothessun protection

Sea temperature near Kainan in June

The nearest coast averages about 22°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 May 31 to Nov 23 — about 5.8 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb14Bracing
Mar15Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct24Refreshing
Nov21Refreshing
Dec18Cool

UV index in Kainan in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Kainan peaks around June 23 at about 10 (extreme) — 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 highExtremeVery highModerateJun 23UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul10Extreme
Aug7High
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

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

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1625 µg/m³Oct 1914 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar24Moderate
Apr26Moderate
May24Moderate
Jun21Moderate
Jul22Moderate
Aug24Moderate
Sep17Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Kainan?

Kainan sits at 34.2°N, 135.2°E, 3 m above sea level, in Japan. The nearest listed city is Minato, 9.0 km away.

Topography around Kainan

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

Within 3 km, the terrain around Kainan has significant variations in elevation — a maximum elevation change of 535 m around an average of 93 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 881 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,878 m.

The land around Kainan is covered by trees (56%) and artificial surfaces (31%) within 3 km, trees (53%) and water (24%) within 16 km, and trees (46%) and water (40%) within 80 km.

3 km
535 m
16 km
881 m
80 km
1,878 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Minato 9.0 km · Wakayama 10 km · Arida 12 km · Itogawa 14 km · Iwade 14 km · Hannan 20 km · Kinokawa 22 km · Sennan 22 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 Kainan (34.1517°, 135.214°, elevation 3 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).