Sōma weather in March

In March, Sōma sees average daytime highs of 9°C and overnight lows near 4°C, with 98 mm of precipitation across 10.2 wet days and about 11.7 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 7°C in the first days to 10°C by the end. The sky is clear or mostly clear about 32% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 h 06 min at the start of March to 12 h 18 min by month's end. Set against the rest of the year, March is Sōma's 6th-clearest and 4th-windiest month. For the whole year in context, see Sōma's year-round climate.

Daytime high
10th warmest
Overnight low
3rd coldest
Precipitation
98 mm
10.2 wet days
Daylight
11 h 42 min
5:55 AM – 5:37 PM
Cloud cover
58%
6th clearest
Wind
17 km/h
4th windiest
Solar energy
4.29 kWh/m²
Travel score
1.6
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 March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 7°C in the first days to 10°C by the end.

A typical March day in Sōma reaches about 9°C in the afternoon and slips back to 4°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 5°C and 12°C. Set against its neighbours, March runs about 2°C warmer than February and about 4°C cooler than April.

10°15°151015202531
Avg high (°C)Avg low (°C)
173
273
373
473
583
684
784
884
984
1084
1184
1284
1384
1484
1594
1694
1794
1895
1995
2095
2195
2295
2395
2495
25105
26105
27106
28106
29106
30106
31106

How March really feels in Sōma

Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 12 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
12
wind chill below the day's low

The story in March is cold — wind chill drags the overnight "feels like" below the raw low.

Sōma weather by month

How March compares with the rest of the year at a glance. March is the 10th-warmest and 8th-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 March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 22% of March, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25248
35248
45248
55248
65248
75248
85347
95347
105347
115446
125446
135446
145446
155446
165446
175446
185446
195446
205446
215446
225446
235446
245446
255446
265446
275446
285446
295446
305446
315545

Chance of precipitation in March

Any precipitationSnow

Sōma gets around 98 mm of rain and snow over 10.2 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 32% and peaks near 36% on the wettest days, and about 2 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1307
2307
3307
4317
5317
6317
7317
8317
9317
10317
11316
12316
13316
14315
15315
16314
17314
18314
19323
20323
21333
22333
23343
24343
25353
26353
27353
28363
29362
30362
31362

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in March

Winds average 17 km/h in March.

Across March, daily wind ranges from about 16 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 06 min at the start of March to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over March. Sunrise moves from 6:17 AM to 5:32 AM, and sunset from 5:22 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:175:22
211.16:165:23
311.26:145:24
411.26:135:25
511.26:115:26
611.36:105:27
711.36:085:28
811.46:075:29
911.46:065:30
1011.46:045:31
1111.56:035:32
1211.56:015:33
1311.66:005:34
1411.65:585:35
1511.75:575:36
1611.75:555:37
1711.75:535:38
1811.85:525:39
1911.85:505:40
2011.95:495:41
2111.95:475:42
2211.95:465:43
2312.05:445:43
2412.05:435:44
2512.15:415:45
2612.15:395:46
2712.25:385:47
2812.25:365:48
2912.25:355:49
3012.35:335:50
3112.35:325:51

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.29 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 — March's 4.29 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.9Moderate
53.9Moderate
63.9Moderate
74.0Moderate
84.0Bright
94.0Bright
104.1Bright
114.1Bright
124.2Bright
134.2Bright
144.3Bright
154.3Bright
164.3Bright
174.4Bright
184.4Bright
194.4Bright
204.5Bright
214.5Bright
224.5Bright
234.6Bright
244.6Bright
254.6Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.8Bright
314.8Bright
Planning a trip in March

Hazard calendar for Sōma

In seasonPeak

In March, 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 March a good time to visit Sōma?

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

1.6
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

March is a weaker month for outdoor sightseeing in Sōma.

What to pack for Sōma in March

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

In March, Sōma sees daytime highs around 9°C and nights near 4°C. Pack a warm layer. Worth having: rain gear. About 10 days see rain.

a warm layerrain gear

Sea temperature near Sōma in March

The nearest coast averages about 9°C in March — 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 March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 4 — enough to warrant sun protection. 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 March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March 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
March 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).