Shimonoseki weather in March

In March, Shimonoseki sees average daytime highs of 12°C and overnight lows near 9°C, with 144 mm of precipitation across 12.4 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 11°C in the first days to 13°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 11 h 12 min at the start of March to 12 h 18 min by month's end. Set against the rest of the year, March is Shimonoseki's 6th-clearest and 4th-windiest month. For the whole year in context, see Shimonoseki's year-round climate.

Daytime high
12°
9th warmest
Overnight low
3rd coldest
Precipitation
144 mm
12.4 wet days
Daylight
11 h 42 min
6:34 AM – 6:18 PM
Cloud cover
60%
6th clearest
Wind
17 km/h
4th windiest
Solar energy
4.25 kWh/m²
Travel score
3.0
out of 10

Shimonoseki is city in Yamaguchi Prefecture, Japan.

Density
371/km²
people per km²
Founded
1889

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 11°C in the first days to 13°C by the end.

A typical March day in Shimonoseki reaches about 12°C in the afternoon and slips back to 9°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 15°C. Set against its neighbours, March runs about 3°C warmer than February and about 4°C cooler than April.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1117
2117
3117
4117
5118
6118
7118
8118
9118
10118
11118
12128
13128
14128
15128
16128
17129
18129
19129
20129
21129
22139
23139
24139
25139
261310
271310
281310
291310
301410
311410

How March really feels in Shimonoseki

Once humidity and wind are folded in, March 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

March sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Shimonoseki weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9213.91.5101.6
Feb / 91121.210.71.8
Mar12° / 14412.40.211.73.0
Apr16° / 12°15311012.84.8
May20° / 17°17010.4013.76.2
Jun23° / 20°27313.8014.25.9
Jul27° / 24°25513.50145.8
Aug28° / 26°13911.4013.35.7
Sep26° / 23°16311.5012.26.5
Oct21° / 18°1048.4011.16.9
Nov16° / 13°9510.2010.25.2
Dec11° / 9012.80.59.82.7

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 15% of March, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24258
34357
44357
54357
64456
74456
84555
94555
104654
114753
124753
134654
144753
154753
164753
174753
184852
194753
204753
214753
224753
234852
244852
254852
264951
274951
285050
295050
304951
314951

Chance of precipitation in March

Any precipitation

Shimonoseki gets around 144 mm of rain and snow over 12.4 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 39% and peaks near 43% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)
143
243
343
443
543
643
742
842
941
1040
1140
1239
1339
1438
1538
1638
1737
1837
1938
2038
2138
2238
2338
2438
2538
2638
2738
2838
2938
3038
3138

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
19991
20991
21991
22991
23991
24991
25982
26982
27982
28973
29973
30964
31964

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.

05101520151015202531
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
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 12 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 66 minutes over March. Sunrise moves from 6:53 AM to 6:13 AM, and sunset from 6:06 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:536:06
211.26:526:07
311.36:516:07
411.36:506:08
511.36:486:09
611.46:476:10
711.46:466:11
811.56:446:12
911.56:436:12
1011.56:426:13
1111.66:416:14
1211.66:396:15
1311.66:386:16
1411.76:376:16
1511.76:356:17
1611.76:346:18
1711.86:326:19
1811.86:316:20
1911.86:306:20
2011.96:286:21
2111.96:276:22
2212.06:256:23
2312.06:246:24
2412.06:236:24
2512.16:216:25
2612.16:206:26
2712.16:186:27
2812.26:176:27
2912.26:166:28
3012.26:146:29
3112.36:136:30

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.25 kWh/m².

For context, solar energy here swings from a low near 2.12 kWh/m² to a high of 5.54 kWh/m² in May across the year — March's 4.25 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
84.0Moderate
94.0Bright
104.1Bright
114.1Bright
124.1Bright
134.2Bright
144.2Bright
154.2Bright
164.3Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.4Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.6Bright
274.6Bright
284.7Bright
294.7Bright
304.7Bright
314.8Bright
Planning a trip in March

Hazard calendar for Shimonoseki

In seasonPeak

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

Shimonoseki 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 Shimonoseki?

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

3.0
Sightseeing
9th-best month of the year
0.0
Beach & pool
10th-best month of the year

March is a weaker month for outdoor sightseeing in Shimonoseki.

What to pack for Shimonoseki in March

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

In March, Shimonoseki sees daytime highs around 12°C and nights near 9°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near Shimonoseki in March

The nearest coast averages about 12°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 20 km away) is warmest in August at about 27°C and coldest in February near 12°C.

It's comfortable for a long swim from Jun 6 to Nov 10 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May17Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov19Cool
Dec16Cool

UV index in Shimonoseki 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 Shimonoseki peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 17UV 9Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr8Very high
May8Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Shimonoseki 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 Shimonoseki is worst in March — around 27 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2026 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar27Moderate
Apr24Moderate
May21Moderate
Jun18Moderate
Jul16Moderate
Aug19Moderate
Sep13Moderate
Oct12Good
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Shimonoseki?

Shimonoseki sits at 34.0°N, 130.9°E, 10 m above sea level, in Japan. The nearest listed city is Kitakyushu, 14 km away.

Topography around Shimonoseki

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

Within 3 km, the terrain around Shimonoseki has significant variations in elevation — a maximum elevation change of 291 m around an average of 26 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 658 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,205 m.

The land around Shimonoseki is covered by artificial surfaces (42%), water (34%) and trees (22%) within 3 km, water (53%), trees (22%) and artificial surfaces (20%) within 16 km, and water (50%) and trees (38%) within 80 km.

3 km
291 m
16 km
658 m
80 km
1,205 m
treesgrasslandcroplandartificial surfacesbare terrainwater
March weather nearby: Kitakyushu 14 km · Kanda 20 km · Sanyōonoda 22 km · Onoda 23 km · Miyaodai 24 km · Yukuhashi 26 km · Nakama 26 km · Miyako 29 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 Shimonoseki (33.9555°, 130.9371°, elevation 10 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).