Izumisano weather in April

In April, Izumisano sees average daytime highs of 19°C and overnight lows near 11°C, with 113 mm of rain across 10.4 wet days and about 12.8 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 21°C by the end. The sky is clear or mostly clear about 32% 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 Izumisano's 6th-clearest and 4th-windiest month. For the whole year in context, see Izumisano's year-round climate.

Daytime high
19°
7th warmest
Overnight low
11°
6th coldest
Rainfall
113 mm
10.4 wet days
Daylight
12 h 54 min
5:33 AM – 6:25 PM
Cloud cover
59%
6th clearest
Wind
10 km/h
4th windiest
Solar energy
5.24 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 17°C in the first days to 21°C by the end.

A typical April day in Izumisano reaches about 19°C in the afternoon and slips back to 11°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 22°C. Set against its neighbours, April runs about 5°C warmer than March and about 5°C cooler than May.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1168
2168
3178
4178
5179
6179
7179
8179
9189
101810
111810
121810
131810
141910
151911
161911
171911
181911
192011
202012
212012
222012
232012
242012
252112
262113
272113
282113
292113
302113

How April really feels in Izumisano

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.

Izumisano weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 607.80.6102.1
Feb10° / 668.30.810.72.4
Mar14° / 10711.20.111.73.8
Apr19° / 11°11310.4012.85.9
May24° / 16°13410.2013.86.7
Jun27° / 20°19413.7014.35.6
Jul30° / 24°17713.1014.14.3
Aug32° / 25°10710.2013.33.8
Sep29° / 22°17612.3012.25.4
Oct23° / 16°1599.8011.16.9
Nov17° / 10°857.9010.25.8
Dec12° / 698.20.19.73.4

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 15% of April, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
25149
35149
45149
55149
65050
75050
85050
95050
104951
114951
124852
134852
144654
154654
164555
174555
184456
194456
204456
214456
224456
234555
244456
254456
264456
274555
284555
294555
304555

Chance of precipitation in April

Any precipitation

Izumisano gets around 113 mm of rain over 10.4 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 35% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
236
336
435
535
635
735
835
936
1036
1136
1236
1336
1436
1536
1636
1736
1835
1935
2035
2134
2234
2334
2433
2533
2632
2732
2831
2931
3031

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
194510
294510
393610
493610
592710
692710
791810
891810
990910
1090910
11881020
12881020
13871120
14871120
15851221
16841321
17841321
18821431
19811531
20811630
21791740
22781840
23771940
24742150
25722251
26702361
27692461
28672571
29662671
30652681

Wind in April

Winds average 10 km/h in April.

Across April, daily wind ranges from about 10 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
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 5:54 AM to 5:16 AM, and sunset from 6:13 PM to 6:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:546:13
212.45:526:14
312.45:516:15
412.45:496:15
512.55:486:16
612.55:476:17
712.55:456:18
812.65:446:18
912.65:436:19
1012.65:416:20
1112.75:406:21
1212.75:386:22
1312.85:376:22
1412.85:366:23
1512.85:346:24
1612.95:336:25
1712.95:326:26
1812.95:316:26
1913.05:296:27
2013.05:286:28
2113.05:276:29
2213.15:266:30
2313.15:246:30
2413.15:236:31
2513.25:226:32
2613.25:216:33
2713.25:206:34
2813.35:186:34
2913.35:176:35
3013.35:166:36

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.24 kWh/m².

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 5.55 kWh/m² in May across the year — April's 5.24 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in April

Hazard calendar for Izumisano

In seasonPeak

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

Izumisano 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 Izumisano?

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

5.9
Sightseeing
3rd-best month of the year
2.5
Beach & pool
7th-best month of the year

April is a reasonable time to visit Izumisano for sightseeing.

What to pack for Izumisano in April

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

In April, Izumisano sees daytime highs around 19°C and nights near 11°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

Sea temperature near Izumisano 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 at the nearest coast (about 18 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 Izumisano 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 Izumisano 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 Izumisano 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 Izumisano 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 Izumisano?

Izumisano sits at 34.4°N, 135.3°E, 6 m above sea level, in Japan. The nearest listed city is Ōkubo-naka, 3.0 km away.

Topography around Izumisano

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

Within 3 km, the terrain around Izumisano has only modest variations in elevation — a maximum elevation change of 54 m around an average of 10 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 Izumisano is covered by artificial surfaces (54%) and water (37%) within 3 km, water (44%), trees (32%) and artificial surfaces (20%) within 16 km, and trees (52%) and water (29%) within 80 km.

3 km
54 m
16 km
868 m
80 km
1,879 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Ōkubo-naka 3.0 km · Kaizuka 5.0 km · Kishiwada 7.0 km · Sennan 9.0 km · Tadaoka-higashi 11 km · Hannan 11 km · Izumiōtsu 12 km · Izumi 13 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 Izumisano (34.4167°, 135.3167°, elevation 6 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).