Shōwa weather in June

In June, Shōwa sees average daytime highs of 21°C and overnight lows near 13°C, with 177 mm of rain across 16.3 wet days and about 14.4 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 23°C by the end. The sky is clear or mostly clear about 8% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 12 min at the start of June to 14 h 24 min by month's end. Set against the rest of the year, June is Shōwa's 12th-clearest and 9th-windiest month. For the whole year in context, see Shōwa's year-round climate.

Daytime high
21°
4th warmest
Overnight low
13°
9th coldest
Rainfall
177 mm
16.3 wet days
Daylight
14 h 24 min
4:34 AM – 6:58 PM
Cloud cover
81%
12th clearest
Wind
5 km/h
9th windiest
Solar energy
4.8 kWh/m²
Travel score
5.2
out of 10

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 23°C by the end.

A typical June day in Shōwa reaches about 21°C in the afternoon and slips back to 13°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 25°C. Set against its neighbours, June runs about 3°C warmer than May and about 4°C cooler than July.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12011
22011
32011
42012
52012
62012
72012
82012
92012
102113
112113
122113
132113
142113
152113
162114
172114
182114
192114
202214
212214
222215
232215
242215
252215
262215
272315
282315
292316
302316

How June really feels in Shōwa

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.

Shōwa weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -7°646.879.90.0
Feb / -6°727.96.510.70.0
Mar / -3°12512.87.611.70.9
Apr13° / 12112.62.112.93.5
May18° / 13012.80.113.95.4
Jun21° / 13°17716.3014.45.2
Jul25° / 17°19917.4014.25.4
Aug26° / 18°13916.8013.35.6
Sep22° / 15°18514.6012.25.7
Oct17° / 18613011.14.9
Nov11° / 859.20.510.12.8
Dec / -3°607.44.29.60.3

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% 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 81%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12872
22773
32773
42575
52476
62377
72377
82377
92179
102080
112080
121981
131882
141783
151783
161783
171783
181783
191684
201585
211585
221585
231585
241585
251585
261684
271684
281684
291783
301783

Chance of precipitation in June

Any precipitation

Shōwa gets around 177 mm of rain over 16.3 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 55% and peaks near 62% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
142
243
343
444
545
646
747
848
949
1051
1152
1254
1355
1457
1558
1659
1760
1861
1961
2061
2162
2262
2362
2462
2562
2662
2762
2862
2962
3062

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 57% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
193700
290910
3891010
4881110
5871210
6841420
7831520
8801730
9781930
10752140
11732340
12692650
13662860
14633070
15613270
16573490
175436100
185138110
194839131
204440151
214141171
223842191
233542221
243243241
252943271
262643301
272343331
282142351
291942382
301641412

Wind in June

Winds average 5 km/h in June.

Across June, 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.

0246810151015202530
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

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 12 min at the start of June to 14 h 24 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 4:37 AM to 4:37 AM, and sunset from 6:50 PM to 7:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.24:376:50
214.24:366:51
314.34:366:51
414.34:366:52
514.34:356:53
614.34:356:53
714.34:356:54
814.34:356:54
914.34:356:55
1014.34:346:55
1114.44:346:56
1214.44:346:56
1314.44:346:57
1414.44:346:57
1514.44:346:58
1614.44:346:58
1714.44:346:58
1814.44:346:59
1914.44:346:59
2014.44:356:59
2114.44:357:00
2214.44:357:00
2314.44:357:00
2414.44:357:00
2514.44:367:00
2614.44:367:00
2714.44:367:01
2814.44:377:01
2914.44:377:01
3014.44:377:01

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 4.8 kWh/m².

For context, solar energy here swings from a low near 2.63 kWh/m² to a high of 5.51 kWh/m² in May across the year — June's 4.8 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.3Bright
35.3Bright
45.2Bright
55.2Bright
65.2Bright
75.1Bright
85.0Bright
95.0Bright
104.9Bright
114.9Bright
124.8Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.6Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
Planning a trip in June

Is June a good time to visit Shōwa?

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

5.2
Sightseeing
5th-best month of the year
3.3
Beach & pool
4th-best month of the year

June is a reasonable time to visit Shōwa for sightseeing.

What to pack for Shōwa in June

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

In June, Shōwa sees daytime highs around 21°C and nights near 13°C. Pack rain gear. Worth having: sun protection. About 16 days see rain.

rain gearsun protection

Sea temperature near Shōwa 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 at the nearest coast (about 57 km away) is warmest in August at about 27°C and coldest in February near 15°C.

It's comfortable for a long swim from May 30 to Nov 23 — about 5.9 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar15Cool
Apr17Cool
May19Cool
Jun22Refreshing
Jul24Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Shōwa 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 Shōwa peaks around July 14 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highExtremeVery highModerateJul 14UV 11Dec 21UV 2
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul11Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Shōwa 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 Shōwa is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1821 µg/m³Dec 1810 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug14Moderate
Sep13Moderate
Oct12Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Shōwa?

Shōwa sits at 35.6°N, 138.5°E, 272 m above sea level, in Japan. The nearest listed city is Ryūō, 4.0 km away.

Topography around Shōwa

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

Within 3 km, the terrain around Shōwa has only modest variations in elevation — a maximum elevation change of 36 m around an average of 264 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,834 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,735 m.

The land around Shōwa is covered by artificial surfaces (78%) within 3 km, trees (61%) and artificial surfaces (22%) within 16 km, and trees (81%) within 80 km.

3 km
36 m
16 km
1,834 m
80 km
3,735 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Ryūō 4.0 km · Chūō 5.0 km · Kofu 5.0 km · Minami-Alps 7.0 km · Kai 7.0 km · Minamiarupusu 7.0 km · Isawa 9.0 km · Fuefuki 9.0 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 Shōwa (35.6279°, 138.5351°, elevation 272 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. 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).