Umeki weather in April

In April, Umeki sees average daytime highs of 20°C and overnight lows near 12°C, with 182 mm of rain across 11.5 wet days and about 12.8 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 21°C by the end. The sky is clear or mostly clear about 29% 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 12 min by month's end. Set against the rest of the year, April is Umeki's 8th-clearest and 5th-windiest month. For the whole year in context, see Umeki's year-round climate.

Daytime high
20°
7th warmest
Overnight low
12°
6th coldest
Rainfall
182 mm
11.5 wet days
Daylight
12 h 48 min
5:55 AM – 6:42 PM
Cloud cover
63%
8th clearest
Wind
10 km/h
5th windiest
Solar energy
4.87 kWh/m²
Travel score
5.9
out of 10

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 18°C in the first days to 21°C by the end.

A typical April day in Umeki reaches about 20°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 23°C. Set against its neighbours, April runs about 4°C warmer than March and about 4°C cooler than May.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11810
21810
31810
41811
51811
61811
71911
81911
91911
101911
111912
121912
131912
142012
152012
162012
172012
182013
192013
202013
212113
222113
232113
242113
252114
262114
272114
282214
292214
302214

How April really feels in Umeki

Once humidity and wind are folded in, April 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

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

Umeki weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan11° / 819.610.22.9
Feb13° / 1049.710.83.3
Mar16° / 15312.911.84.5
Apr20° / 12°18211.512.85.9
May24° / 16°20511.713.66.4
Jun26° / 21°51419.4144.9
Jul30° / 25°3362013.93.9
Aug31° / 25°17317.513.23.8
Sep29° / 23°19714.512.25.2
Oct24° / 17°1088.611.27.2
Nov19° / 12°1118.710.46.3
Dec14° / 877.9104.2

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 11% of April, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34456
44357
54357
64258
74159
84060
94060
103961
113961
123961
133961
143961
153862
163862
173862
183862
193862
203862
213961
224060
234060
244060
254060
264060
273961
283961
293961
303862

Chance of precipitation in April

Any precipitation

Umeki gets around 182 mm of rain over 11.5 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 39% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
139
238
338
438
537
637
737
837
938
1038
1138
1239
1339
1440
1540
1640
1740
1840
1940
2040
2140
2240
2340
2440
2540
2639
2739
2838
2938
3037

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 65% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
18213410
28014510
37915510
47815610
57716610
67616710
77517710
87517710
97318810
107219810
117119820
126920920
136821920
1467211020
1566221020
1665231020
1765231020
1863241030
1962251030
2062251030
2160261130
2258271140
2357281140
2456281240
2553291350
2652301350
2750301460
2848301560
2947311570
3045311671

Wind in April

Winds average 10 km/h in April.

Across April, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
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
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in April

DaylightNight

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

Days grow by about 54 minutes over April. Sunrise moves from 6:14 AM to 5:40 AM, and sunset from 6:32 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:146:32
212.36:136:32
312.46:126:33
412.46:116:34
512.46:096:34
612.56:086:35
712.56:076:36
812.56:056:37
912.66:046:37
1012.66:036:38
1112.66:026:39
1212.66:006:39
1312.75:596:40
1412.75:586:41
1512.75:576:41
1612.85:556:42
1712.85:546:43
1812.85:536:43
1912.95:526:44
2012.95:516:45
2112.95:506:45
2213.05:486:46
2313.05:476:47
2413.05:466:47
2513.15:456:48
2613.15:446:49
2713.15:436:50
2813.15:426:50
2913.25:416:51
3013.25:406:52

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.87 kWh/m².

For context, solar energy here swings from a low near 2.45 kWh/m² to a high of 5.04 kWh/m² in May across the year — April's 4.87 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in April

Hazard calendar for Umeki

In seasonPeak

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

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

Umeki's rainy season runs June–July, 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 April a good time to visit Umeki?

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

5.9
Sightseeing
4th-best month of the year
3.0
Beach & pool
7th-best month of the year

April is a reasonable time to visit Umeki for sightseeing.

What to pack for Umeki in April

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

In April, Umeki sees daytime highs around 20°C and nights near 12°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Umeki in April

The nearest coast averages about 19°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 25 km away) is warmest in August at about 28°C and coldest in February near 17°C.

It's comfortable for a long swim from May 4 to Dec 16 — about 7.5 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan18Cool
Feb17Cool
Mar18Cool
Apr19Cool
May21Refreshing
Jun23Refreshing
Jul26Warm
Aug28Tropical
Sep27Warm
Oct25Warm
Nov23Refreshing
Dec20Refreshing

UV index in Umeki in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Umeki peaks around July 10 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 10UV 11Dec 23UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar7High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Umeki 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 Umeki is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1423 µg/m³Oct 1012 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb19Moderate
Mar22Moderate
Apr23Moderate
May21Moderate
Jun17Moderate
Jul12Moderate
Aug14Moderate
Sep12Moderate
Oct12Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Umeki?

Umeki sits at 31.7°N, 130.4°E, 77 m above sea level, in Japan. The nearest listed city is Ijūin, 6.0 km away.

Topography around Umeki

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

Within 3 km, the terrain around Umeki has significant variations in elevation — a maximum elevation change of 318 m around an average of 128 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 680 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,644 m.

The land around Umeki is covered by trees (82%) within 3 km, trees (68%) and water (20%) within 16 km, and water (53%) and trees (41%) within 80 km.

3 km
318 m
16 km
680 m
80 km
1,644 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Ijūin 6.0 km · Ichikikushikino 11 km · Kushikino 12 km · Sendai 18 km · Kagoshima 19 km · Aira 23 km · Kajiki 28 km · Kaseda-shirakame 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 Umeki (31.6667°, 130.3833°, elevation 77 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).