Sumoto weather in April

In April, Sumoto sees average daytime highs of 16°C and overnight lows near 13°C, with 133 mm of rain across 10.8 wet days and about 12.8 hours of daylight. It is the 8th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 18°C by the end. The sky is clear or mostly clear about 36% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of April to 13 h 18 min by month's end. Set against the rest of the year, April is Sumoto's 5th-clearest and 6th-windiest month. For the whole year in context, see Sumoto's year-round climate.

Daytime high
16°
8th warmest
Overnight low
13°
5th coldest
Rainfall
133 mm
10.8 wet days
Daylight
12 h 54 min
5:35 AM – 6:26 PM
Cloud cover
56%
5th clearest
Wind
20 km/h
6th windiest
Solar energy
5.29 kWh/m²
Travel score
5.0
out of 10

Sumoto is city in Hyōgo Prefecture, Japan.

Density
231/km²
people per km²
Founded
2006

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 15°C in the first days to 18°C by the end.

A typical April day in Sumoto reaches about 16°C in the afternoon and slips back to 13°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 18°C. Set against its neighbours, April runs about 3°C warmer than March and about 3°C cooler than May.

10°15°20°151015202530
Avg high (°C)Avg low (°C)
11411
21511
31511
41511
51511
61511
71511
81512
91512
101512
111612
121612
131612
141613
151613
161613
171613
181613
191713
201714
211714
221714
231714
241714
251714
261714
271715
281815
291815
301815

Sumoto weather by month

How April compares with the rest of the year at a glance. April is the 8th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 9613.80.6102.0
Feb10° / 9412.50.810.72.2
Mar13° / 13012.8011.73.4
Apr16° / 13°13310.8012.85.0
May19° / 17°15710.3013.86.1
Jun22° / 20°22713.2014.25.8
Jul26° / 24°18311.3014.16.4
Aug27° / 26°998.4013.36.8
Sep25° / 23°19011.8012.26.5
Oct22° / 18°19010.8011.16.6
Nov17° / 14°1039.2010.25.6
Dec12° / 9812.30.29.73.3

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25545
35545
45644
55644
65644
75644
85545
95545
105446
115446
125347
135347
145149
155149
165050
175050
184951
194951
204951
214951
224951
234951
244951
254951
264951
275050
285050
295149
305050

Chance of precipitation in April

Any precipitation

Sumoto gets around 133 mm of rain over 10.8 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
137
237
337
437
537
637
737
837
937
1037
1137
1238
1338
1438
1538
1638
1738
1838
1938
2037
2137
2236
2335
2435
2534
2634
2733
2833
2932
3032

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the dry band about 73% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
191810
290910
390910
4891010
5871120
6861220
7851320
8851320
9841420
10831520
11821620
12801730
13791830
14781930
15762031
16742141
17732241
18722341
19702451
20692551
21672661
22652861
23632971
24613081
25593191
265732101
275533111
285334121
295135131
304836151

Wind in April

Winds average 20 km/h in April.

Across April, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1420breezy
1520breezy
1620breezy
1720breezy
1820breezy
1920breezy
2020breezy
2120breezy
2220breezy
2320breezy
2420breezy
2520breezy
2620breezy
2720breezy
2820light breeze
2920light breeze
3020light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over April. Sunrise moves from 5:55 AM to 5:18 AM, and sunset from 6:15 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:556:15
212.45:546:16
312.45:536:16
412.45:516:17
512.55:506:18
612.55:486:19
712.55:476:19
812.65:466:20
912.65:446:21
1012.65:436:22
1112.75:426:22
1212.75:406:23
1312.85:396:24
1412.85:386:25
1512.85:366:26
1612.95:356:26
1712.95:346:27
1812.95:326:28
1913.05:316:29
2013.05:306:30
2113.05:296:30
2213.15:276:31
2313.15:266:32
2413.15:256:33
2513.25:246:34
2613.25:236:34
2713.25:216:35
2813.35:206:36
2913.35:196:37
3013.35:186:38

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.29 kWh/m².

For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 5.58 kWh/m² in May across the year — April's 5.29 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.9Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in April

Hazard calendar for Sumoto

In seasonPeak

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

Sumoto 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 April a good time to visit Sumoto?

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

5.0
Sightseeing
8th-best month of the year
0.8
Beach & pool
8th-best month of the year

April is a reasonable time to visit Sumoto for sightseeing.

What to pack for Sumoto in April

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

In April, Sumoto sees daytime highs around 16°C and nights near 13°C. Worth packing: a warm layer, rain gear, sun protection and a windbreaker. About 11 days see rain.

a warm layerrain gearsun protectiona windbreaker

Sea temperature near Sumoto in April

The nearest coast averages about 16°C in April — 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 27°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 5 to Nov 16 — about 5.4 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 Sumoto in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sumoto peaks around July 10 at about 10 (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 10UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Sumoto in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Sumoto 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 Sumoto?

Sumoto sits at 34.3°N, 134.9°E, -1 m above sea level, in Japan. The nearest listed city is Minamiawaji, 13 km away.

Topography around Sumoto

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

Within 3 km, the terrain around Sumoto has only modest variations in elevation — a maximum elevation change of 233 m around an average of 40 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 600 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,606 m.

The land around Sumoto is covered by trees (45%) and water (24%) within 3 km, water (50%) and trees (35%) within 16 km, and trees (42%) and water (41%) within 80 km.

3 km
233 m
16 km
600 m
80 km
1,606 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Minamiawaji 13 km · Awaji 15 km · Fukura 19 km · Minato 28 km · Wakayama 28 km · Narutochō-mitsuishi 30 km · Hannan 33 km · Sennan 35 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 Sumoto (34.3432°, 134.8891°, elevation -1 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).