Izumi weather in April

In April, Izumi sees average daytime highs of 18°C and overnight lows near 14°C, with 178 mm of rain across 11.4 wet days and about 12.8 hours of daylight. It is the 8th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 20°C by the end. The sky is clear or mostly clear about 31% 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 Izumi's 6th-clearest and 6th-windiest month. For the whole year in context, see Izumi's year-round climate.

Daytime high
18°
8th warmest
Overnight low
14°
5th coldest
Rainfall
178 mm
11.4 wet days
Daylight
12 h 48 min
5:55 AM – 6:42 PM
Cloud cover
61%
6th clearest
Wind
13 km/h
6th windiest
Solar energy
4.94 kWh/m²
Travel score
5.6
out of 10

Izumi is city in Kagoshima Prefecture, Japan.

Density
158/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 16°C in the first days to 20°C by the end.

A typical April day in Izumi reaches about 18°C in the afternoon and slips back to 14°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 21°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)
11612
21612
31712
41712
51712
61712
71713
81713
91713
101713
111813
121813
131813
141813
151814
161814
171814
181814
191914
201914
211914
221914
231915
241915
251915
262015
272015
282015
292015
302016

How April really feels in Izumi

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.

Izumi weather by month

How April compares with the rest of the year at a glance. April is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan11° / 8811.110.12.7
Feb12° / 10510.610.82.9
Mar14° / 10°14912.911.84.0
Apr18° / 14°17811.412.85.6
May22° / 18°19811.613.66.3
Jun25° / 21°48718.414.15.2
Jul28° / 25°34218.213.94.6
Aug30° / 26°1711613.24.4
Sep28° / 24°19313.212.25.7
Oct23° / 19°1108.511.27.2
Nov18° / 14°1179.310.46.1
Dec13° / 9710.19.93.9

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 12% of April, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24654
34654
44555
54456
64555
74456
84456
94357
104357
114258
124258
134258
144159
154159
164159
174159
184159
194159
204258
214258
224258
234357
244456
254456
264456
274456
284357
294357
304357

Chance of precipitation in April

Any precipitation

Izumi gets around 178 mm of rain over 11.4 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
239
338
438
538
637
737
837
937
1038
1138
1238
1339
1439
1539
1639
1740
1840
1940
2040
2139
2239
2339
2439
2539
2639
2738
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 (%)
1831340
2821350
3811450
4801550
5781660
6781660
7771760
8761860
9741871
10731971
11722071
12702181
13702181
14692281
15672391
16662491
17662491
186425101
196326101
206127102
215928112
225828122
235729122
245530132
255231143
265032153
274833164
284633174
294334185
304135195

Wind in April

Winds average 13 km/h in April.

Across April, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812calm
2912calm
3012calm

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 5:39 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
212.36:136:33
312.46:126:33
412.46:106:34
512.46:096:35
612.56:086:35
712.56:066:36
812.56:056:37
912.66:046:38
1012.66:036:38
1112.66:016:39
1212.76:006:40
1312.75:596:40
1412.75:586:41
1512.85:566:42
1612.85:556:42
1712.85:546:43
1812.95:536:44
1912.95:526:44
2012.95:506:45
2112.95:496:46
2213.05:486:47
2313.05:476:47
2413.05:466:48
2513.15:456:49
2613.15:446:49
2713.15:436:50
2813.25:416:51
2913.25:406:52
3013.25:396:52

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.94 kWh/m².

For context, solar energy here swings from a low near 2.3 kWh/m² to a high of 5.15 kWh/m² in May across the year — April's 4.94 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.1Bright
Planning a trip in April

Hazard calendar for Izumi

In seasonPeak

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

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

Izumi'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 Izumi?

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

5.6
Sightseeing
5th-best month of the year
2.0
Beach & pool
8th-best month of the year

April is a reasonable time to visit Izumi for sightseeing.

What to pack for Izumi in April

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

In April, Izumi sees daytime highs around 18°C and nights near 14°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near Izumi in April

The nearest coast averages about 18°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 28°C and coldest in February near 16°C.

It's comfortable for a long swim from May 16 to Dec 4 — about 6.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb16Cool
Mar17Cool
Apr18Cool
May20Refreshing
Jun23Refreshing
Jul26Warm
Aug28Warm
Sep27Warm
Oct24Warm
Nov22Refreshing
Dec19Cool

UV index in Izumi in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Izumi peaks around July 10 at about 10 (extreme) — 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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 10UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar7High
Apr8Very high
May8Very high
Jun10Extreme
Jul11Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Izumi 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 Izumi is worst in March — around 24 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2424 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar24Moderate
Apr24Moderate
May22Moderate
Jun18Moderate
Jul13Moderate
Aug14Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Izumi?

Izumi sits at 32.1°N, 130.4°E, 37 m above sea level, in Japan. The nearest listed city is Minamata, 15 km away.

Topography around Izumi

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

Within 3 km, the terrain around Izumi has significant variations in elevation — a maximum elevation change of 357 m around an average of 86 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,063 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,718 m.

The land around Izumi is covered by trees (65%) and artificial surfaces (22%) within 3 km, trees (71%) within 16 km, and trees (48%) and water (45%) within 80 km.

3 km
357 m
16 km
1,063 m
80 km
1,718 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Minamata 15 km · Akune 17 km · Tsuruda 18 km · Isa 23 km · Ōkuchi-shinohara 24 km · Sashiki 27 km · Sendai 30 km · Ushibukamachi 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 Izumi (32.0833°, 130.3667°, elevation 37 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).