Sennan weather in March

In March, Sennan sees average daytime highs of 13°C and overnight lows near 6°C, with 125 mm of precipitation across 12.5 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 12°C in the first days to 15°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 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 Sennan's 7th-clearest and 3rd-windiest month. For the whole year in context, see Sennan's year-round climate.

Daytime high
13°
9th warmest
Overnight low
4th coldest
Precipitation
125 mm
12.5 wet days
Daylight
11 h 42 min
6:17 AM – 6:01 PM
Cloud cover
59%
7th clearest
Wind
15 km/h
3rd windiest
Solar energy
4.41 kWh/m²
Travel score
3.5
out of 10

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 12°C in the first days to 15°C by the end.

A typical March day in Sennan reaches about 13°C in the afternoon and slips back to 6°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 17°C. Set against its neighbours, March runs about 3°C warmer than February and about 5°C cooler than April.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1115
2115
3125
4125
5125
6125
7125
8125
9125
10125
11126
12136
13136
14136
15136
16136
17136
18136
19136
20147
21147
22147
23147
24147
25147
26147
27157
28158
29158
30158
31158

How March really feels in Sennan

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.

Sennan 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 / 8211.41.6101.8
Feb10° / 8510.71.710.72.1
Mar13° / 12512.50.211.73.5
Apr18° / 11°12611012.85.6
May22° / 15°14910.7013.86.5
Jun25° / 20°23214.1014.35.8
Jul29° / 24°19513.5014.15.1
Aug30° / 25°11411.4013.34.7
Sep27° / 22°18213012.25.8
Oct22° / 16°17910.9011.16.7
Nov17° / 11°1008.8010.25.5
Dec12° / 8610.70.89.73.0

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 17% of March, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
35050
44951
55050
64951
75050
85050
95050
105050
115050
125050
134951
144951
154951
164852
174852
184852
194753
204753
214753
224753
234753
244852
254852
264852
274951
284951
295050
305149
315149

Chance of precipitation in March

Any precipitationSnow

Sennan gets around 125 mm of rain and snow over 12.5 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 40% and peaks near 41% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1392
2392
3392
4392
5402
6401
7401
8401
9401
10401
11401
12401
13401
14401
15401
16401
17400
18410
19410
20410
21410
22410
23410
24410
25410
26410
27400
28400
29400
30400
31390

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59910
69910
79910
89910
99910
109910
119910
129910
139910
149910
159820
169820
179820
189820
199820
209820
219730
229730
239730
249730
259730
269730
279730
289541
299541
309541
319451

Wind in March

Winds average 15 km/h in March.

Across March, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light 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 6:36 AM to 5:55 AM, and sunset from 5:48 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:365:48
211.26:355:49
311.36:345:50
411.36:335:51
511.36:315:51
611.46:305:52
711.46:295:53
811.46:275:54
911.56:265:55
1011.56:255:56
1111.66:235:57
1211.66:225:57
1311.66:215:58
1411.76:195:59
1511.76:186:00
1611.76:176:01
1711.86:156:01
1811.86:146:02
1911.86:126:03
2011.96:116:04
2111.96:106:05
2212.06:086:05
2312.06:076:06
2412.06:056:07
2512.16:046:08
2612.16:026:09
2712.16:016:09
2812.26:006:10
2912.25:586:11
3012.25:576:12
3112.35:556:12

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.41 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 5.56 kWh/m² in May across the year — March's 4.41 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.9Moderate
24.0Moderate
34.0Moderate
44.0Bright
54.1Bright
64.1Bright
74.1Bright
84.2Bright
94.2Bright
104.2Bright
114.3Bright
124.3Bright
134.3Bright
144.4Bright
154.4Bright
164.4Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.6Bright
224.6Bright
234.6Bright
244.7Bright
254.7Bright
264.7Bright
274.8Bright
284.8Bright
294.8Bright
304.9Bright
314.9Bright
Planning a trip in March

Hazard calendar for Sennan

In seasonPeak

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

Sennan 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 Sennan?

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

3.5
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 Sennan.

What to pack for Sennan in March

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

In March, Sennan sees daytime highs around 13°C and nights near 6°C. Worth packing: a warm layer and rain gear. About 13 days see rain.

a warm layerrain gear

Sea temperature near Sennan in March

The nearest coast averages about 14°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 13 km away) is warmest in August at about 27°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 3 to Nov 16 — about 5.5 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr16Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Sennan 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 Sennan peaks around June 23 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highModerateJun 23UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug7High
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Sennan 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 Sennan is worst in April — around 26 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1625 µg/m³Oct 1914 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar24Moderate
Apr26Moderate
May24Moderate
Jun21Moderate
Jul22Moderate
Aug24Moderate
Sep17Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Sennan?

Sennan sits at 34.3°N, 135.3°E, 29 m above sea level, in Japan. The nearest listed city is Hannan, 2.0 km away.

Topography around Sennan

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

Within 3 km, the terrain around Sennan has significant variations in elevation — a maximum elevation change of 320 m around an average of 71 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 868 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,879 m.

The land around Sennan is covered by trees (46%) and artificial surfaces (41%) within 3 km, trees (38%), water (34%) and artificial surfaces (20%) within 16 km, and trees (49%) and water (33%) within 80 km.

3 km
320 m
16 km
868 m
80 km
1,879 m
treesgrasslandcroplandartificial surfacesbare terrainwater
March weather nearby: Hannan 2.0 km · Izumisano 9.0 km · Ōkubo-naka 9.0 km · Iwade 12 km · Kaizuka 14 km · Kinokawa 16 km · Wakayama 16 km · Kishiwada 16 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 Sennan (34.3484°, 135.2684°, elevation 29 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).