Izumo weather in April

In April, Izumo sees average daytime highs of 16°C and overnight lows near 9°C, with 104 mm of rain across 10.7 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 14°C in the first days to 19°C by the end. The sky is clear or mostly clear about 33% 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 24 min by month's end. Set against the rest of the year, April is Izumo's 3rd-clearest and 5th-windiest month. For the whole year in context, see Izumo's year-round climate.

Daytime high
16°
7th warmest
Overnight low
6th coldest
Rainfall
104 mm
10.7 wet days
Daylight
12 h 54 min
5:42 AM – 6:36 PM
Cloud cover
59%
3rd clearest
Wind
12 km/h
5th windiest
Solar energy
5.26 kWh/m²
Travel score
5.1
out of 10

Izumo is city in Shimane Prefecture, Japan.

Density
277/km²
people per km²
Founded
2005

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 14°C in the first days to 19°C by the end.

A typical April day in Izumo reaches about 16°C in the afternoon and slips back to 9°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 20°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)
1147
2147
3147
4147
5148
6158
7158
8158
9158
10158
11169
12169
13169
14169
15169
16179
171710
181710
191710
201710
211710
221810
231811
241811
251811
261811
271811
281911
291912
301912

How April really feels in Izumo

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.

Izumo weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9617.37.89.90.9
Feb / 8714.66.210.71.2
Mar11° / 11614.12.111.72.6
Apr16° / 10410.7012.95.1
May21° / 14°11710.5013.86.4
Jun24° / 19°16012.7014.36.1
Jul28° / 23°21315.2014.15.0
Aug30° / 24°14913.9013.34.6
Sep26° / 20°19013.6012.26.0
Oct21° / 15°10310.3011.16.5
Nov15° / 8711.10.110.14.6
Dec10° / 10316.34.59.72.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 13% of April, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24654
34654
44654
54654
64753
74852
84852
94852
104852
114753
124753
134852
144753
154753
164654
174555
184555
194555
204654
214555
224555
234555
244654
254654
264654
274654
284654
294753
304753

Chance of precipitation in April

Any precipitation

Izumo gets around 104 mm of rain over 10.7 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 40% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
140
240
339
438
538
638
737
837
937
1036
1136
1236
1336
1436
1536
1636
1736
1836
1936
2035
2135
2235
2334
2434
2534
2633
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 94% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59910
69820
79820
89820
99820
109820
119730
129730
139730
149640
159640
169451
179451
189361
199361
209271
219271
229181
239091
248992
2588102
2687112
2787112
2885123
2985123
3084133

Wind in April

Winds average 12 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.

051015151015202530
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
1713light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over April. Sunrise moves from 6:04 AM to 5:25 AM, and sunset from 6:24 PM to 6:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:046:24
212.46:026:24
312.46:016:25
412.45:596:26
512.55:586:27
612.55:566:28
712.65:556:29
812.65:536:29
912.65:526:30
1012.75:516:31
1112.75:496:32
1212.75:486:33
1312.85:466:33
1412.85:456:34
1512.95:446:35
1612.95:426:36
1712.95:416:37
1813.05:406:38
1913.05:386:38
2013.05:376:39
2113.15:366:40
2213.15:356:41
2313.15:336:42
2413.25:326:43
2513.25:316:43
2613.25:306:44
2713.35:286:45
2813.35:276:46
2913.35:266:47
3013.45:256:48

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.26 kWh/m².

For context, solar energy here swings from a low near 2.04 kWh/m² to a high of 5.74 kWh/m² in May across the year — April's 5.26 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.9Bright
34.9Bright
44.9Bright
55.0Bright
65.0Bright
75.0Bright
85.1Bright
95.1Bright
105.1Bright
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
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.6Bright
Planning a trip in April

Hazard calendar for Izumo

In seasonPeak

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

Izumo 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 Izumo?

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

5.1
Sightseeing
5th-best month of the year
1.1
Beach & pool
7th-best month of the year

April is a reasonable time to visit Izumo for sightseeing.

What to pack for Izumo in April

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

In April, Izumo sees daytime highs around 16°C and nights near 9°C. Worth packing: a warm layer, rain gear and sun protection. About 11 days see rain.

a warm layerrain gearsun protection

Sea temperature near Izumo in April

The nearest coast averages about 15°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 13 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 12 to Nov 15 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul24Warm
Aug27Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Izumo 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 Izumo peaks around July 18 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 18UV 10Dec 23UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun9Very high
Jul11Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Izumo 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 Izumo is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1222 µg/m³Oct 1310 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb16Moderate
Mar21Moderate
Apr22Moderate
May20Moderate
Jun17Moderate
Jul13Moderate
Aug12Good
Sep11Good
Oct10Good
Nov12Good
Dec11Good
Location & terrain

Where is Izumo?

Izumo sits at 35.4°N, 132.8°E, 6 m above sea level, in Japan. The nearest listed city is Hiratachō, 9.0 km away.

Topography around Izumo

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

Within 3 km, the terrain around Izumo has only modest variations in elevation — a maximum elevation change of 152 m around an average of 16 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 567 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,689 m.

The land around Izumo is covered by artificial surfaces (52%) and cropland (22%) within 3 km, trees (54%) and water (25%) within 16 km, and trees (52%) and water (44%) within 80 km.

3 km
152 m
16 km
567 m
80 km
1,689 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Hiratachō 9.0 km · Unnan 18 km · Matsue 29 km · Ōdachō-ōda 31 km · Yasugichō 44 km · Sakaiminato 46 km · Yonago 52 km · Shōbara 62 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 Izumo (35.3667°, 132.7667°, 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).