Semboku weather in June

In June, Semboku sees average daytime highs of 21°C and overnight lows near 13°C, with 158 mm of rain across 15.1 wet days and about 14.8 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 22°C by the end. The sky is clear or mostly clear about 14% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 36 min at the start of June to 14 h 48 min by month's end. Set against the rest of the year, June is Semboku's 8th-clearest and 10th-windiest month. For the whole year in context, see Semboku's year-round climate.

Daytime high
21°
4th warmest
Overnight low
13°
9th coldest
Rainfall
158 mm
15.1 wet days
Daylight
14 h 48 min
4:13 AM – 7:01 PM
Cloud cover
75%
8th clearest
Wind
6 km/h
10th windiest
Solar energy
5.08 kWh/m²
Travel score
5.3
out of 10

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 19°C in the first days to 22°C by the end.

A typical June day in Semboku reaches about 21°C in the afternoon and slips back to 13°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 24°C. Set against its neighbours, June runs about 4°C warmer than May and about 3°C cooler than July.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
11911
21911
31911
41911
52011
62012
72012
82012
92012
102012
112012
122013
132013
142013
152013
162113
172113
182114
192114
202114
212114
222114
232114
242115
252115
262215
272215
282215
292215
302216

How June really feels in Semboku

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.

Semboku weather by month

How June compares with the rest of the year at a glance. June is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -8°10718.322.19.50.0
Feb / -7°9816.118.310.40.0
Mar / -4°13418.316.211.70.1
Apr10° / 13315.95132.1
May17° / 150150.114.24.6
Jun21° / 13°15815.1014.85.3
Jul24° / 18°25019.6014.55.2
Aug25° / 19°21617.9013.65.4
Sep21° / 14°18715.8012.35.4
Oct15° / 159150.310.94.1
Nov / 13717.66.49.81.2
Dec / -5°13019.419.29.20.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 12% 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 (%)
13466
23466
33367
43466
53367
63268
73169
83070
92971
102872
112773
122674
132575
142575
152476
162476
172476
182476
192377
202377
212278
222278
232278
242278
252179
262080
272080
282179
292179
302179

Chance of precipitation in June

Any precipitation

Semboku gets around 158 mm of rain over 15.1 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 51% and peaks near 61% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
144
244
345
445
545
646
746
847
947
1048
1148
1249
1350
1450
1551
1651
1752
1852
1953
2053
2154
2254
2355
2456
2557
2658
2759
2859
2960
3061

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 44% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1801910
2782110
3762310
4742420
5722620
6702730
7672940
8643150
9623260
10593470
11563680
12523891
134939111
144740121
154442141
164142161
173943181
183644201
193444221
203144231
212944252
222743272
232543293
242342314
252141335
261939356
271738378
281637389
2914354010
3013344112

Wind in June

Winds average 6 km/h in June.

Across June, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 36 min at the start of June to 14 h 48 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 4:17 AM to 4:17 AM, and sunset from 6:52 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:176:52
214.64:166:53
314.64:166:54
414.64:166:54
514.74:156:55
614.74:156:56
714.74:156:56
814.74:146:57
914.74:146:58
1014.74:146:58
1114.74:146:59
1214.84:146:59
1314.84:147:00
1414.84:137:00
1514.84:137:01
1614.84:137:01
1714.84:137:01
1814.84:147:02
1914.84:147:02
2014.84:147:02
2114.84:147:03
2214.84:147:03
2314.84:147:03
2414.84:157:03
2514.84:157:03
2614.84:157:04
2714.84:157:04
2814.84:167:04
2914.84:167:04
3014.84:177:04

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.08 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 5.22 kWh/m² in May across the year — June's 5.08 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.4Bright
55.4Bright
65.4Bright
75.3Bright
85.3Bright
95.3Bright
105.2Bright
115.2Bright
125.2Bright
135.1Bright
145.1Bright
155.0Bright
165.0Bright
175.0Bright
184.9Bright
194.9Bright
204.9Bright
214.8Bright
224.8Bright
234.8Bright
244.7Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.6Bright
304.5Bright
Planning a trip in June

Is June a good time to visit Semboku?

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

5.3
Sightseeing
3rd-best month of the year
3.0
Beach & pool
4th-best month of the year

June is a reasonable time to visit Semboku for sightseeing.

What to pack for Semboku in June

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

In June, Semboku sees daytime highs around 21°C and nights near 13°C. Pack rain gear. Worth having: sun protection. About 15 days see rain.

rain gearsun protection

UV index in Semboku in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Semboku peaks around August 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighVery highHighModerateLowAug 18UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul6High
Aug9Very high
Sep7High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Semboku 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 Semboku is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1420 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar19Moderate
Apr20Moderate
May19Moderate
Jun14Moderate
Jul12Moderate
Aug11Good
Sep11Good
Oct12Good
Nov11Good
Dec9Good
Location & terrain

Where is Semboku?

Semboku sits at 39.7°N, 140.7°E, 389 m above sea level, in Japan. The nearest listed city is Shizukuishi, 20 km away.

Topography around Semboku

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

Within 3 km, the terrain around Semboku has large variations in elevation — a maximum elevation change of 836 m around an average of 444 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,556 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,976 m.

The land around Semboku is covered by trees (88%) within 3 km, trees (91%) within 16 km, and trees (80%) within 80 km.

3 km
836 m
16 km
1,556 m
80 km
1,976 m
treesgrasslandcroplandartificial surfaceswater
June weather nearby: Shizukuishi 20 km · Morioka 35 km · Takizawa 35 km · Yahaba 36 km · Ōmagari 37 km · Rokugō 37 km · Daisen 37 km · Hachimantai 39 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 Semboku (39.7093°, 140.7465°, elevation 389 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. 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).