Muroran weather in March

In March, Muroran sees average daytime highs of 2°C and overnight lows near -1°C, with 57 mm of precipitation across 9.1 wet days and about 11.6 hours of daylight. It is the 9th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 1°C in the first days to 4°C by the end. The sky is clear or mostly clear about 31% of the time in March, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Muroran's 3rd-clearest and 5th-windiest month. For the whole year in context, see Muroran's year-round climate.

Daytime high
9th warmest
Overnight low
-1°
4th coldest
Precipitation
57 mm
9.1 wet days
Daylight
11 h 36 min
5:56 AM – 5:35 PM
Cloud cover
58%
3rd clearest
Wind
18 km/h
5th windiest
Solar energy
4.37 kWh/m²
Travel score
0.0
out of 10

Muroran is city in Hokkaido, Japan.

Density
1,187/km²
people per km²
Founded
1922

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 1°C in the first days to 4°C by the end.

A typical March day in Muroran reaches about 2°C in the afternoon and slips back to -1°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between -1°C and 5°C. Set against its neighbours, March runs about 3°C warmer than February and about 4°C cooler than April.

-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
11-3
21-2
31-2
41-2
51-2
61-2
71-2
81-2
91-2
102-2
112-2
122-2
132-1
142-1
152-1
162-1
172-1
182-1
193-1
203-1
213-1
2230
2330
2430
2530
2630
2730
2830
2940
3040
3141

How March really feels in Muroran

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.

Muroran weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -4°508.510.19.30.0
Feb-0° / -4°437.4710.30.0
Mar / -1°579.1611.60.0
Apr / 769.11.513.10.5
May11° / 11211.1014.42.5
Jun15° / 12°10410.30154.5
Jul20° / 17°15313014.85.6
Aug22° / 19°18112.6013.76.0
Sep20° / 17°16613012.35.8
Oct14° / 11°10310.90.110.84.2
Nov / 80111.79.61.0
Dec / -1°69119.790.0

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 21% of March, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24852
34852
44951
54852
64951
74951
84951
94951
104951
115050
125050
135050
145050
155149
165248
175248
185347
195446
205446
215545
225545
235545
245644
255644
265644
275743
285743
295644
305644
315743

Chance of precipitation in March

Any precipitationSnow

Muroran gets around 57 mm of rain and snow over 9.1 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 29% and peaks near 30% on the wettest days, and about 6 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
12824
22824
32924
42925
52925
62925
72924
83024
93024
103023
113022
123022
133021
143020
153020
163019
173018
183017
192917
202916
212915
222915
232814
242814
252814
262813
272813
282813
292712
302712
312711

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 18 km/h in March.

Across March, daily wind ranges from about 16 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3116light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 10 h 54 min at the start of March to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 90 minutes over March. Sunrise moves from 6:22 AM to 5:30 AM, and sunset from 5:17 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.96:225:17
211.06:205:18
311.06:185:19
411.16:175:21
511.16:155:22
611.26:135:23
711.26:125:24
811.36:105:26
911.36:085:27
1011.46:075:28
1111.46:055:29
1211.56:035:30
1311.56:025:32
1411.56:005:33
1511.65:585:34
1611.65:565:35
1711.75:555:36
1811.75:535:37
1911.85:515:39
2011.85:495:40
2111.95:485:41
2211.95:465:42
2312.05:445:43
2412.05:425:44
2512.15:405:46
2612.15:395:47
2712.25:375:48
2812.25:355:49
2912.35:335:50
3012.35:315:51
3112.45:305:52

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.37 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 5.42 kWh/m² in May across the year — March's 4.37 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.8Moderate
43.8Moderate
53.9Moderate
63.9Moderate
74.0Moderate
84.0Bright
94.0Bright
104.1Bright
114.1Bright
124.2Bright
134.2Bright
144.3Bright
154.3Bright
164.4Bright
174.4Bright
184.5Bright
194.5Bright
204.5Bright
214.6Bright
224.6Bright
234.7Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.8Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in March

Hazard calendar for Muroran

In seasonPeak

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

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

Muroran's rainy season runs May–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 Muroran?

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

0.0
Sightseeing
9th-best month of the year
0.0
Beach & pool
7th-best month of the year

March is a weaker month for outdoor sightseeing in Muroran.

What to pack for Muroran in March

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

In March, Muroran sees daytime highs around 2°C and nights near -1°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 9 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Muroran in March

The nearest coast averages about 4°C in March — 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 21°C and coldest in February near 4°C.

It's comfortable for a long swim from Aug 9 to Sep 13 — about 1.2 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan6Bracing
Feb4Bracing
Mar4Bracing
Apr6Bracing
May9Bracing
Jun14Bracing
Jul18Cool
Aug21Refreshing
Sep20Refreshing
Oct17Cool
Nov12Bracing
Dec9Bracing

UV index in Muroran in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Muroran peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 18UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr5High
May8Very high
Jun7High
Jul5Moderate
Aug9Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Muroran 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 Muroran is worst in April — around 17 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (December, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1216 µg/m³Dec 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar16Moderate
Apr17Moderate
May14Moderate
Jun9Good
Jul8Good
Aug8Good
Sep8Good
Oct9Good
Nov8Good
Dec6Good
Location & terrain

Where is Muroran?

Muroran sits at 42.3°N, 141.0°E, 8 m above sea level, in Japan. The nearest listed city is Date, 19 km away.

Topography around Muroran

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

Within 3 km, the terrain around Muroran has only modest variations in elevation — a maximum elevation change of 185 m around an average of 21 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 901 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,867 m.

The land around Muroran is covered by water (49%), trees (25%) and artificial surfaces (23%) within 3 km, water (76%) within 16 km, and trees (48%) and water (45%) within 80 km.

3 km
185 m
16 km
901 m
80 km
1,867 m
treesgrasslandcroplandartificial surfaceswater
March weather nearby: Date 19 km · Noboribetsu 22 km · Shiraoi 39 km · Honchō 53 km · Yakumo 60 km · Niseko 60 km · Tomakomai 62 km · Kamiiso 62 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 Muroran (42.3172°, 140.9881°, elevation 8 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).