Nanyō weather in March

In March, Nanyō sees average daytime highs of 5°C and overnight lows near -2°C, with 146 mm of precipitation across 19.4 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 3°C in the first days to 7°C by the end. The sky is clear or mostly clear about 11% 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 Nanyō's 7th-clearest and 3rd-windiest month. For the whole year in context, see Nanyō's year-round climate.

Daytime high
9th warmest
Overnight low
-2°
4th coldest
Precipitation
146 mm
19.4 wet days
Daylight
11 h 42 min
5:58 AM – 5:40 PM
Cloud cover
73%
7th clearest
Wind
10 km/h
3rd windiest
Solar energy
4.22 kWh/m²
Travel score
0.2
out of 10

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 3°C in the first days to 7°C by the end.

A typical March day in Nanyō reaches about 5°C in the afternoon and slips back to -2°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 0°C and 9°C. Set against its neighbours, March runs about 3°C warmer than February and about 7°C cooler than April.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
13-4
23-4
33-4
43-3
53-3
63-3
73-3
84-3
94-3
104-3
114-3
124-3
134-3
144-3
155-2
165-2
175-2
185-2
195-2
205-2
215-2
226-2
236-1
246-1
256-1
266-1
276-1
287-1
297-1
3070
3170

How March really feels in Nanyō

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.

Nanyō weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°19024.425.29.70.0
Feb / -5°13720.620.510.50.0
Mar / -2°14619.415.611.70.2
Apr11° / 11515.14.4132.5
May18° / 11614.20.1145.1
Jun22° / 14°15515.2014.65.4
Jul25° / 18°24119.9014.45.1
Aug26° / 19°18317.4013.55.4
Sep22° / 15°15515.3012.35.5
Oct16° / 13914.30.1114.5
Nov10° / 13417.55.59.91.7
Dec / -3°18123.219.29.40.0

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 16% of March, with mostly cloudy or overcast conditions the remaining 73%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22278
32377
42377
52278
62278
72377
82377
92377
102377
112377
122575
132575
142674
152674
162773
172773
182971
192971
202971
213070
223070
233169
243169
253169
263268
273268
283169
293268
303268
313367

Chance of precipitation in March

Any precipitationSnow

Nanyō gets around 146 mm of rain and snow over 19.4 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 62% and peaks near 66% on the wettest days, and about 16 days bring snow. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
16661
26660
36560
46559
56559
66558
76558
86557
96556
106556
116455
126454
136453
146453
156452
166451
176350
186349
196248
206247
216146
226145
236044
246043
255941
265940
275839
285738
295737
305635
315534

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 10 km/h in March.

Across March, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 6:20 AM to 5:35 AM, and sunset from 5:25 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:205:25
211.16:195:26
311.26:185:27
411.26:165:28
511.26:155:29
611.36:135:30
711.36:125:31
811.46:105:32
911.46:095:33
1011.46:075:34
1111.56:065:35
1211.56:045:36
1311.66:035:37
1411.66:015:38
1511.76:005:39
1611.75:585:40
1711.75:575:41
1811.85:555:42
1911.85:545:43
2011.95:525:44
2111.95:515:45
2211.95:495:46
2312.05:475:47
2412.05:465:48
2512.15:445:49
2612.15:435:50
2712.25:415:51
2812.25:395:51
2912.25:385:52
3012.35:365:53
3112.35:355:54

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.22 kWh/m².

For context, solar energy here swings from a low near 1.82 kWh/m² to a high of 5.35 kWh/m² in May across the year — March's 4.22 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
164.3Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.5Bright
224.5Bright
234.5Bright
244.6Bright
254.6Bright
264.6Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.8Bright
Planning a trip in March

Is March a good time to visit Nanyō?

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

0.2
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 Nanyō.

What to pack for Nanyō in March

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

In March, Nanyō sees daytime highs around 5°C and nights near -2°C. Pack a warm layer and rain gear. Worth having: a heavy coat. About 19 days see rain.

a warm layerrain geara heavy coat

Sea temperature near Nanyō 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 65 km away) is warmest in August at about 26°C and coldest in March near 9°C.

It's comfortable for a long swim from Jun 21 to Oct 29 — about 4.3 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar9Bracing
Apr11Bracing
May15Bracing
Jun20Cool
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov18Cool
Dec15Bracing

UV index in Nanyō 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 Nanyō peaks around August 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 12UV 10Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun8Very high
Jul9Very high
Aug10Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Moderate

Air quality in Nanyō 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 Nanyō is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1622 µg/m³Dec 1710 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar21Moderate
Apr22Moderate
May21Moderate
Jun16Moderate
Jul14Moderate
Aug12Moderate
Sep12Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Nanyō?

Nanyō sits at 38.0°N, 140.1°E, 212 m above sea level, in Japan. The nearest listed city is Takahata, 8.0 km away.

Topography around Nanyō

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

Within 3 km, the terrain around Nanyō has only modest variations in elevation — a maximum elevation change of 199 m around an average of 222 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 803 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,110 m.

The land around Nanyō is covered by cropland (61%) and trees (21%) within 3 km, trees (61%) and cropland (29%) within 16 km, and trees (77%) within 80 km.

3 km
199 m
16 km
803 m
80 km
2,110 m
treesgrasslandcroplandartificial surfaceswater
March weather nearby: Takahata 8.0 km · Nagai 10 km · Yonezawa 15 km · Kaminoyama 19 km · Yamagata 31 km · Sagae 39 km · Tendō 41 km · Date 42 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 Nanyō (38.0432°, 140.1128°, elevation 212 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. 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).