Uonuma weather in March

In March, Uonuma sees average daytime highs of 7°C and overnight lows near -1°C, with 201 mm of precipitation across 21.6 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 5°C in the first days to 9°C by the end. The sky is clear or mostly clear about 15% 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 Uonuma's 7th-clearest and 4th-windiest month. For the whole year in context, see Uonuma's year-round climate.

Daytime high
9th warmest
Overnight low
-1°
4th coldest
Precipitation
201 mm
21.6 wet days
Daylight
11 h 42 min
6:03 AM – 5:45 PM
Cloud cover
72%
7th clearest
Wind
8 km/h
4th windiest
Solar energy
4.2 kWh/m²
Travel score
0.6
out of 10

Uonuma is city in Niigata Prefecture, Japan.

Density
36/km²
people per km²
Founded
2004

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 5°C in the first days to 9°C by the end.

A typical March day in Uonuma reaches about 7°C in the afternoon and slips back to -1°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 2°C and 12°C. Set against its neighbours, March runs about 4°C warmer than February and about 7°C cooler than April.

-10°10°20°151015202531
Avg high (°C)Avg low (°C)
15-2
25-2
35-2
45-2
55-2
65-2
75-2
86-2
96-2
106-2
116-1
126-1
136-1
146-1
157-1
167-1
177-1
187-1
197-1
207-1
218-1
2280
2380
2480
2580
2680
2790
2890
2990
3091
31101

How March really feels in Uonuma

Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 31 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
31
wind chill below the day's low

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

Uonuma weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°29826.224.19.70.0
Feb / -3°2232219.810.60.0
Mar / -1°20121.614.811.70.6
Apr14° / 14316.43.612.93.4
May20° / 10°152150.1145.5
Jun23° / 15°17816.6014.55.5
Jul27° / 20°26320.5014.34.7
Aug28° / 21°18017.8013.44.9
Sep24° / 17°19016.6012.35.5
Oct18° / 10°19616.60114.9
Nov12° / 19218.83.9102.5
Dec / -2°2712417.69.50.2

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 13% of March, with mostly cloudy or overcast conditions the remaining 72%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32377
42476
52476
62575
72575
82674
92674
102674
112773
122872
132872
142971
152971
162971
172971
183070
193070
203070
213070
223070
233070
243070
253169
263169
273268
283268
293367
303466
313466

Chance of precipitation in March

Any precipitationSnow

Uonuma gets around 201 mm of rain and snow over 21.6 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 69% and peaks near 74% on the wettest days, and about 15 days bring snow. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
17457
27357
37357
47357
57357
67356
77256
87256
97255
107155
117154
127153
137053
147052
157051
167050
177049
186947
196946
206944
216843
226842
236740
246739
256638
266637
276535
286534
296433
306331
316330

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 8 km/h in March.

Across March, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 6:24 AM to 5:40 AM, and sunset from 5:30 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:245:30
211.16:235:31
311.26:225:32
411.26:205:33
511.36:195:34
611.36:175:35
711.36:165:36
811.46:155:37
911.46:135:38
1011.56:125:39
1111.56:105:40
1211.56:095:41
1311.66:075:42
1411.66:065:43
1511.76:045:44
1611.76:035:45
1711.76:015:46
1811.86:005:47
1911.85:585:48
2011.95:575:49
2111.95:555:50
2211.95:545:50
2312.05:525:51
2412.05:505:52
2512.15:495:53
2612.15:475:54
2712.25:465:55
2812.25:445:56
2912.25:435:57
3012.35:415:58
3112.35:405:59

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.2 kWh/m².

For context, solar energy here swings from a low near 1.87 kWh/m² to a high of 5.55 kWh/m² in May across the year — March's 4.2 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.7Moderate
43.7Moderate
53.8Moderate
63.8Moderate
73.9Moderate
83.9Moderate
93.9Moderate
104.0Moderate
114.0Bright
124.1Bright
134.1Bright
144.2Bright
154.2Bright
164.2Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.4Bright
224.5Bright
234.5Bright
244.5Bright
254.6Bright
264.6Bright
274.6Bright
284.7Bright
294.7Bright
304.7Bright
314.8Bright
Planning a trip in March

Hazard calendar for Uonuma

In seasonPeak

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

Uonuma 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 March a good time to visit Uonuma?

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

0.6
Sightseeing
9th-best month of the year
0.0
Beach & pool
9th-best month of the year

March is a weaker month for outdoor sightseeing in Uonuma.

What to pack for Uonuma in March

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

In March, Uonuma sees daytime highs around 7°C and nights near -1°C. Pack a warm layer and rain gear. Worth having: a heavy coat. About 22 days see rain.

a warm layerrain geara heavy coat

Sea temperature near Uonuma in March

The nearest coast averages about 10°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 33 km away) is warmest in August at about 27°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 21 to Oct 31 — about 4.4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb11Bracing
Mar10Bracing
Apr11Bracing
May15Bracing
Jun20Cool
Jul23Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov18Cool
Dec15Cool

UV index in Uonuma in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Uonuma peaks around August 12 at about 10 (very high) — 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 highModerateAug 12UV 10Dec 21UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Moderate

Air quality in Uonuma 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 Uonuma is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1723 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun19Moderate
Jul17Moderate
Aug14Moderate
Sep12Moderate
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Uonuma?

Uonuma sits at 37.2°N, 139.0°E, 95 m above sea level, in Japan. The nearest listed city is Ojiya, 16 km away.

Topography around Uonuma

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

Within 3 km, the terrain around Uonuma has significant variations in elevation — a maximum elevation change of 251 m around an average of 138 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,713 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,554 m.

The land around Uonuma is covered by trees (43%), cropland (29%) and artificial surfaces (21%) within 3 km, trees (82%) within 16 km, and trees (70%) within 80 km.

3 km
251 m
16 km
1,713 m
80 km
2,554 m
treesgrasslandcroplandartificial surfaceswater
March weather nearby: Ojiya 16 km · Minamiuonuma 20 km · Muikamachi 21 km · Tōkamachi 21 km · Nagaoka 25 km · Shiozawa 25 km · Tochio-honchō 26 km · Mitsuke 32 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 Uonuma (37.2449°, 138.9623°, elevation 95 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).