Ina weather in June

In June, Ina sees average daytime highs of 22°C and overnight lows near 14°C, with 181 mm of rain across 15.2 wet days and about 14.4 hours of daylight. It is the 4th-warmest and 2nd-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 9% 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 Ina's 12th-clearest and 9th-windiest month. For the whole year in context, see Ina's year-round climate.

Daytime high
22°
4th warmest
Overnight low
14°
9th coldest
Rainfall
181 mm
15.2 wet days
Daylight
14 h 24 min
4:36 AM – 7:01 PM
Cloud cover
80%
12th clearest
Wind
5 km/h
9th windiest
Solar energy
4.93 kWh/m²
Travel score
5.4
out of 10

Ina is city in Nagano prefecture, Japan.

Density
102/km²
people per km²
Founded
1954

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 20°C in the first days to 23°C by the end.

A typical June day in Ina reaches about 22°C in the afternoon and slips back to 14°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
32012
42112
52112
62112
72112
82112
92112
102113
112113
122113
132113
142113
152213
162214
172214
182214
192214
202214
212214
222215
232215
242215
252315
262315
272315
282316
292316
302316

How June really feels in Ina

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.

Ina weather by month

How June compares with the rest of the year at a glance. June is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -8°8310.710.59.80.0
Feb / -7°889.38.310.60.0
Mar / -3°14413.27.811.70.9
Apr13° / 13312.11.912.93.6
May18° / 13711.9013.95.6
Jun22° / 14°18115.2014.45.4
Jul25° / 17°20316.5014.25.6
Aug26° / 18°12114.1013.45.9
Sep23° / 15°16412.5012.26.1
Oct17° / 17611.7011.15.2
Nov11° / 989.71.110.12.7
Dec / -4°8010.47.59.60.2

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% 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 80%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12872
22872
32773
42674
52575
62575
72575
82476
92377
102278
112179
122179
132080
141981
151981
161882
171882
181882
191882
201684
211684
221684
231684
241684
251684
261684
271684
281684
291684
301783

Chance of precipitation in June

Any precipitation

Ina gets around 181 mm of rain over 15.2 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 (%)
138
239
339
440
541
642
743
844
945
1047
1148
1249
1351
1452
1553
1654
1755
1855
1956
2056
2157
2257
2358
2459
2559
2660
2760
2861
2961
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 56% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
191900
2891010
3881110
4871210
5851410
6831520
7811720
8801820
9772030
10742240
11712540
12682750
13652960
14623170
15593380
16563590
175237110
184938121
194639141
204340161
214040181
223741211
233541231
243241261
252941291
262641321
272440351
282140372
291939402
301738432

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 6 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
286calm
296calm
306calm

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 4:38 AM to 4:39 AM, and sunset from 6:53 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.24:386:53
214.34:386:54
314.34:386:54
414.34:376:55
514.34:376:56
614.34:376:56
714.34:376:57
814.34:366:57
914.44:366:58
1014.44:366:58
1114.44:366:59
1214.44:366:59
1314.44:367:00
1414.44:367:00
1514.44:367:00
1614.44:367:01
1714.44:367:01
1814.44:367:02
1914.44:367:02
2014.44:367:02
2114.44:377:02
2214.44:377:03
2314.44:377:03
2414.44:377:03
2514.44:377:03
2614.44:387:03
2714.44:387:03
2814.44:387:04
2914.44:397:04
3014.44:397:04

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 2.57 kWh/m² to a high of 5.6 kWh/m² in May across the year — June's 4.93 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.4Bright
45.4Bright
55.4Bright
65.3Bright
75.3Bright
85.2Bright
95.2Bright
105.1Bright
115.1Bright
125.0Bright
135.0Bright
144.9Bright
154.9Bright
164.8Bright
174.8Bright
184.8Bright
194.7Bright
204.7Bright
214.7Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.5Bright
294.5Bright
304.5Bright
Planning a trip in June

Is June a good time to visit Ina?

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

5.4
Sightseeing
5th-best month of the year
3.6
Beach & pool
4th-best month of the year

June is a reasonable time to visit Ina for sightseeing.

What to pack for Ina in June

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

In June, Ina sees daytime highs around 22°C and nights near 14°C. Pack rain gear. Worth having: sun protection. About 15 days see rain.

rain gearsun protection

UV index in Ina 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 Ina 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 Ina 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 Ina is worst in April — around 18 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1918 µg/m³Dec 178 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar17Moderate
Apr18Moderate
May17Moderate
Jun16Moderate
Jul13Moderate
Aug12Good
Sep10Good
Oct10Good
Nov9Good
Dec8Good
Location & terrain

Where is Ina?

Ina sits at 35.8°N, 138.0°E, 638 m above sea level, in Japan. The nearest listed city is Minamiminowa, 5.0 km away.

Topography around Ina

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

Within 3 km, the terrain around Ina has significant variations in elevation — a maximum elevation change of 417 m around an average of 678 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,406 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,069 m.

The land around Ina is covered by artificial surfaces (36%), cropland (35%) and trees (20%) within 3 km, trees (76%) within 16 km, and trees (89%) within 80 km.

3 km
417 m
16 km
2,406 m
80 km
3,069 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Minamiminowa 5.0 km · Kinoshita 9.0 km · Komagane 12 km · Tatsuno 18 km · Chino 26 km · Okaya 27 km · Suwa 27 km · Shimosuwa 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 Ina (35.8276°, 137.9538°, elevation 638 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).