Agano weather in June

In June, Agano sees average daytime highs of 24°C and overnight lows near 16°C, with 182 mm of rain across 15 wet days and about 14.6 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 25°C by the end. The sky is clear or mostly clear about 17% of the time in June, and the air most often feels humid.

Daylight stretches from about 14 h 24 min at the start of June to 14 h 36 min by month's end. Set against the rest of the year, June is Agano's 8th-clearest and 9th-windiest month. For the whole year in context, see Agano's year-round climate.

Daytime high
24°
4th warmest
Overnight low
16°
9th coldest
Rainfall
182 mm
15 wet days
Daylight
14 h 36 min
4:25 AM – 7:01 PM
Cloud cover
73%
8th clearest
Wind
7 km/h
9th windiest
Solar energy
5.31 kWh/m²
Travel score
5.8
out of 10

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 25°C by the end.

A typical June day in Agano reaches about 24°C in the afternoon and slips back to 16°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 28°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)
12314
22314
32314
42314
52315
62315
72415
82415
92415
102415
112416
122416
132416
142416
152416
162416
172417
182417
192517
202517
212517
222517
232518
242518
252518
262518
272518
282518
292619
302619

How June really feels in Agano

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.

Agano 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 / -2°19926.122.69.70.0
Feb / -2°1442218.510.50.0
Mar / 15621.211.611.71.0
Apr15° / 12915.91.712.93.8
May21° / 11°14014.30145.7
Jun24° / 16°18215014.65.8
Jul28° / 21°31119.8014.44.7
Aug29° / 22°21517.8013.54.5
Sep25° / 17°17616.2012.35.6
Oct19° / 11°16916.70115.1
Nov12° / 16719.32102.6
Dec / 20524.614.69.40.4

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% 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 71%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14060
23961
33961
43763
53763
63664
73565
83565
93466
103367
113367
123070
133070
142971
152872
162773
172674
182674
192575
202575
212476
222476
232476
242377
252377
262377
272278
282278
292179
302179

Chance of precipitation in June

Any precipitation

Agano gets around 182 mm of rain over 15 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 64% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
140
240
340
440
541
641
742
843
944
1045
1146
1247
1348
1449
1551
1652
1753
1854
1955
2055
2156
2257
2358
2460
2561
2662
2762
2863
2964
3064

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the humid band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 18% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
149371310
246381510
343401620
439411820
536421930
633422130
731432240
828432450
925432660
1022422870
1120423080
1217413390
13154035100
14133936110
15123838130
16103640140
1793441150
1883342171
1973143181
2062944202
2152744222
2242544233
2332344254
2432244274
2522043305
2621842326
2721641347
2811440368
29112383910
30111374111

Wind in June

Winds average 7 km/h in June.

Across June, daily wind ranges from about 7 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
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 24 min at the start of June to 14 h 36 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 4:28 AM to 4:28 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)
114.44:286:53
214.44:286:54
314.54:276:55
414.54:276:55
514.54:276:56
614.54:266:56
714.54:266:57
814.54:266:58
914.54:266:58
1014.64:266:59
1114.64:256:59
1214.64:257:00
1314.64:257:00
1414.64:257:01
1514.64:257:01
1614.64:257:01
1714.64:257:02
1814.64:257:02
1914.64:257:03
2014.64:267:03
2114.64:267:03
2214.64:267:03
2314.64:267:04
2414.64:267:04
2514.64:277:04
2614.64:277:04
2714.64:277:04
2814.64:287:04
2914.64:287:04
3014.64:287:04

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.31 kWh/m².

For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 5.51 kWh/m² in May across the year — June's 5.31 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.7Bright
55.7Bright
65.7Bright
75.6Bright
85.6Bright
95.6Bright
105.5Bright
115.5Bright
125.4Bright
135.4Bright
145.3Bright
155.3Bright
165.2Bright
175.2Bright
185.1Bright
195.1Bright
205.0Bright
215.0Bright
225.0Bright
234.9Bright
244.9Bright
254.9Bright
264.8Bright
274.8Bright
284.8Bright
294.7Bright
304.7Bright
Planning a trip in June

Hazard calendar for Agano

In seasonPeak

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

Agano 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 Agano?

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

5.8
Sightseeing
1st-best month of the year
4.9
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Agano for sightseeing.

What to pack for Agano in June

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

In June, Agano sees daytime highs around 24°C and nights near 16°C. Pack rain gear. Worth having: light clothes and sun protection. About 15 days see rain.

rain gearlight clothessun protection

Sea temperature near Agano in June

The nearest coast averages about 19°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 31 km away) is warmest in August at about 26°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 22 to Oct 30 — about 4.3 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar10Bracing
Apr11Bracing
May15Bracing
Jun19Cool
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov18Cool
Dec15Cool

UV index in Agano 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 Agano peaks around August 13 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highModerateAug 13UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep8Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Agano 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 Agano is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1623 µg/m³Dec 1711 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun18Moderate
Jul16Moderate
Aug14Moderate
Sep13Moderate
Oct13Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Agano?

Agano sits at 37.8°N, 139.2°E, 7 m above sea level, in Japan. The nearest listed city is Suibara, 1.0 km away.

Topography around Agano

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

Within 3 km, the terrain around Agano has only modest variations in elevation — a maximum elevation change of 16 m around an average of 7 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 2,110 m.

The land around Agano is covered by cropland (73%) within 3 km, cropland (39%) and trees (34%) within 16 km, and trees (54%) and water (33%) within 80 km.

3 km
16 m
16 km
970 m
80 km
2,110 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Suibara 1.0 km · Niitsu-honchō 10 km · Kameda-honchō 11 km · Gosen 12 km · Shibata 16 km · Muramatsu 17 km · Niigata 19 km · Shirone 19 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 Agano (37.8361°, 139.2233°, elevation 7 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).