Hekinan weather in June

In June, Hekinan sees average daytime highs of 27°C and overnight lows near 20°C, with 178 mm of rain across 13.4 wet days and about 14.3 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 28°C by the end. The sky is clear or mostly clear about 14% of the time in June, and the air most often feels humid.

Daylight stretches from about 14 h 12 min at the start of June to 14 h 18 min by month's end. Set against the rest of the year, June is Hekinan's 12th-clearest and 10th-windiest month. For the whole year in context, see Hekinan's year-round climate.

Daytime high
27°
4th warmest
Overnight low
20°
9th coldest
Rainfall
178 mm
13.4 wet days
Daylight
14 h 18 min
4:42 AM – 7:02 PM
Cloud cover
77%
12th clearest
Wind
11 km/h
10th windiest
Solar energy
5.05 kWh/m²
Travel score
5.7
out of 10

Hekinan is city in Aichi prefecture, Japan.

Density
2,021/km²
people per km²
Founded
1948

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 26°C in the first days to 28°C by the end.

A typical June day in Hekinan reaches about 27°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 30°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°35°151015202530
Avg high (°C)Avg low (°C)
12518
22618
32618
42618
52618
62618
72619
82619
92619
102619
112619
122619
132619
142620
152720
162720
172720
182720
192720
202721
212721
222721
232721
242721
252821
262822
272822
282822
292822
302822

How June really feels in Hekinan

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.

Hekinan 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 daysDaylight (hours)Travel score
Jan10° / 545.79.92.4
Feb11° / 616.310.72.8
Mar14° / 1089.611.74.3
Apr19° / 10°1169.912.96.1
May24° / 15°13810.313.86.7
Jun27° / 20°17813.414.35.7
Jul30° / 24°18614.714.14.3
Aug32° / 25°11012.413.33.9
Sep28° / 21°19312.212.25.4
Oct23° / 15°17910.511.16.8
Nov17° / 847.210.26.0
Dec12° / 565.69.73.7

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 11% of June, with mostly cloudy or overcast conditions the remaining 75%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23565
33367
43367
53367
63169
73169
83070
92971
102872
112872
122773
132674
142476
152476
162278
172278
182278
192179
202179
212080
221981
231981
241981
251981
261981
271981
281882
291981
302080

Chance of precipitation in June

Any precipitation

Hekinan gets around 178 mm of rain over 13.4 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 46% and peaks near 56% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
132
232
333
434
535
636
737
838
939
1041
1142
1243
1345
1446
1547
1648
1749
1849
1950
2051
2151
2252
2352
2453
2554
2654
2755
2855
2956
3056

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 46% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1213535900
21934361010
31734371110
41633381210
51432391420
61230401520
71129401730
8928411930
9826412140
10724412340
11623412550
12521402860
13419393070
14317393380
15315383590
162143636111
172123538121
182103340141
19293241151
20183042172
21172843192
22162643222
23152444243
24142243263
25132143293
26031943324
27021742344
28021541365
29011440396
30011239416

Wind in June

Winds average 11 km/h in June.

Across June, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 12 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 6 minutes over June. Sunrise moves from 4:45 AM to 4:46 AM, and sunset from 6:55 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.24:456:55
214.24:446:55
314.24:446:56
414.24:446:56
514.24:436:57
614.24:436:58
714.34:436:58
814.34:436:59
914.34:436:59
1014.34:437:00
1114.34:437:00
1214.34:427:01
1314.34:427:01
1414.34:427:01
1514.34:427:02
1614.34:427:02
1714.34:437:03
1814.34:437:03
1914.34:437:03
2014.34:437:03
2114.34:437:04
2214.34:437:04
2314.34:437:04
2414.34:447:04
2514.34:447:04
2614.34:447:05
2714.34:447:05
2814.34:457:05
2914.34:457:05
3014.34:467:05

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.05 kWh/m².

For context, solar energy here swings from a low near 2.57 kWh/m² to a high of 5.54 kWh/m² in May across the year — June's 5.05 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.5Bright
35.5Bright
45.5Bright
55.4Bright
65.4Bright
75.3Bright
85.3Bright
95.3Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.0Bright
155.0Bright
165.0Bright
174.9Bright
184.9Bright
194.9Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in June

Hazard calendar for Hekinan

In seasonPeak

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

Hekinan 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 Hekinan?

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

5.7
Sightseeing
5th-best month of the year
5.7
Beach & pool
4th-best month of the year

June is a reasonable time to visit Hekinan for sightseeing.

What to pack for Hekinan in June

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

In June, Hekinan sees daytime highs around 27°C and nights near 20°C. Pack rain gear. Worth having: light clothes and sun protection. About 13 days see rain.

rain gearlight clothessun protection

Sea temperature near Hekinan 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 13°C.

It's comfortable for a long swim from May 31 to Nov 9 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Hekinan 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 Hekinan peaks around July 10 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highModerateJul 10UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Hekinan 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 Hekinan is worst in April — around 22 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (December, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1322 µg/m³Dec 1813 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar21Moderate
Apr22Moderate
May21Moderate
Jun19Moderate
Jul15Moderate
Aug14Moderate
Sep14Moderate
Oct15Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Hekinan?

Hekinan sits at 34.9°N, 137.0°E, 3 m above sea level, in Japan. The nearest listed city is Takahama, 4.0 km away.

Topography around Hekinan

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

Within 3 km, the terrain around Hekinan has only modest variations in elevation — a maximum elevation change of 23 m around an average of 4 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 294 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,696 m.

The land around Hekinan is covered by artificial surfaces (62%) and water (23%) within 3 km, artificial surfaces (37%), cropland (21%) and water (21%) within 16 km, and trees (47%) and water (28%) within 80 km.

3 km
23 m
16 km
294 m
80 km
1,696 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Takahama 4.0 km · Handa 5.0 km · Nishio 6.0 km · Taketoyo 7.0 km · Agui 9.0 km · Ogawa 9.0 km · Ishiki 10 km · Kariya 11 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 Hekinan (34.8833°, 136.9833°, 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).