Sōma weather in June

In June, Sōma sees average daytime highs of 20°C and overnight lows near 17°C, with 135 mm of rain across 12.8 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 18°C in the first days to 21°C by the end. The sky is clear or mostly clear about 15% 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 Sōma's 11th-clearest and 10th-windiest month. For the whole year in context, see Sōma's year-round climate.

Daytime high
20°
4th warmest
Overnight low
17°
9th coldest
Rainfall
135 mm
12.8 wet days
Daylight
14 h 36 min
4:19 AM – 6:55 PM
Cloud cover
74%
11th clearest
Wind
12 km/h
10th windiest
Solar energy
4.81 kWh/m²
Travel score
5.5
out of 10

Sōma is city in Fukushima Prefecture, Japan.

Density
176/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 18°C in the first days to 21°C by the end.

A typical June day in Sōma reaches about 20°C in the afternoon and slips back to 17°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 22°C. Set against its neighbours, June runs about 3°C warmer than May and about 4°C cooler than July.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11815
21815
31816
41816
51816
61916
71916
81916
91916
101916
111917
121917
131917
141917
151917
162017
172017
182017
192018
202018
212018
222018
232018
242018
252118
262118
272119
282119
292119
302119

How June really feels in Sōma

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.

Sōma 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 / 628.22.89.70.7
Feb / 527.42.910.50.7
Mar / 9810.21.511.71.6
Apr12° / 11310.50.212.93.3
May16° / 13°12111.20145.0
Jun20° / 17°13512.8014.65.5
Jul23° / 21°19116.2014.35.6
Aug25° / 23°14813.2013.56.2
Sep23° / 21°19414.1012.36.0
Oct19° / 16°19111.60115.8
Nov14° / 10°788.10104.3
Dec / 588.71.29.42.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 73%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13961
23763
33763
43763
53565
63466
73367
83367
93268
103169
112971
122872
132872
142773
152674
162575
172575
182575
192476
202476
212377
222377
232377
242377
252278
262278
272278
282278
292278
302377

Chance of precipitation in June

Any precipitation

Sōma gets around 135 mm of rain over 12.8 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 44% and peaks near 52% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
134
234
334
435
535
636
737
837
938
1039
1140
1242
1343
1444
1545
1646
1746
1847
1947
2048
2148
2249
2349
2450
2550
2650
2751
2851
2951
3052

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 43% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
126522110
224522310
322512610
420502820
518503020
617493220
715473530
814463730
912453940
1011434150
1110414360
129394570
138374780
147354990
1573350100
1663151120
1762951140
1862752150
1952553170
2052353190
2142252220
2242051241
2341851261
2431750291
2531648312
2631447333
2731345354
2821244375
2921142396
3021140407

Wind in June

Winds average 12 km/h in June.

Across June, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 4:21 AM to 4:22 AM, and sunset from 6:46 PM to 6:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.44:216:46
214.44:216:47
314.54:216:48
414.54:206:48
514.54:206:49
614.54:206:50
714.54:196:50
814.54:196:51
914.54:196:51
1014.54:196:52
1114.64:196:52
1214.64:196:53
1314.64:196:53
1414.64:196:54
1514.64:186:54
1614.64:196:55
1714.64:196:55
1814.64:196:55
1914.64:196:56
2014.64:196:56
2114.64:196:56
2214.64:196:56
2314.64:196:57
2414.64:206:57
2514.64:206:57
2614.64:206:57
2714.64:216:57
2814.64:216:57
2914.64:216:57
3014.64:226:57

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 4.81 kWh/m².

For context, solar energy here swings from a low near 2.21 kWh/m² to a high of 5.4 kWh/m² in May across the year — June's 4.81 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.3Bright
55.3Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.0Bright
114.9Bright
124.9Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in June

Hazard calendar for Sōma

In seasonPeak

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

Sōma sits in the Pacific typhoon belt; the season peaks July–October.

Sōma's rainy season runs March–October, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is June a good time to visit Sōma?

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

5.5
Sightseeing
5th-best month of the year
2.6
Beach & pool
4th-best month of the year

June is a reasonable time to visit Sōma for sightseeing.

What to pack for Sōma in June

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

In June, Sōma sees daytime highs around 20°C and nights near 17°C. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

Sea temperature near Sōma in June

The nearest coast averages about 18°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 19 km away) is warmest in August at about 24°C and coldest in March near 9°C.

It's comfortable for a long swim from Jul 7 to Oct 10 — about 3.2 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb9Bracing
Mar9Bracing
Apr11Bracing
May14Bracing
Jun18Cool
Jul21Refreshing
Aug24Refreshing
Sep23Refreshing
Oct19Cool
Nov17Cool
Dec14Bracing

UV index in Sōma in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sōma peaks around July 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 20UV 9Jan 10UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Sōma 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 Sōma is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1720 µg/m³Dec 169 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar19Moderate
Apr20Moderate
May19Moderate
Jun14Moderate
Jul12Good
Aug10Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Sōma?

Sōma sits at 37.8°N, 140.9°E, 9 m above sea level, in Japan. The nearest listed city is Minami-Sōma, 19 km away.

Topography around Sōma

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

Within 3 km, the terrain around Sōma has only modest variations in elevation — a maximum elevation change of 79 m around an average of 14 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 689 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,031 m.

The land around Sōma is covered by cropland (41%), artificial surfaces (27%) and trees (25%) within 3 km, trees (45%) and water (35%) within 16 km, and trees (54%) and water (32%) within 80 km.

3 km
79 m
16 km
689 m
80 km
2,031 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Minami-Sōma 19 km · Kakuda 24 km · Watari 28 km · Yanagawamachi-saiwaichō 30 km · Ōkawara 33 km · Hobaramachi 33 km · Namie 35 km · Iwanuma 35 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 Sōma (37.7928°, 140.9294°, elevation 9 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).