Shirakawa weather in April

In April, Shirakawa sees average daytime highs of 15°C and overnight lows near 5°C, with 112 mm of precipitation across 12 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 13°C in the first days to 18°C by the end. The sky is clear or mostly clear about 30% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 30 min by month's end. Set against the rest of the year, April is Shirakawa's 6th-clearest and 3rd-windiest month. For the whole year in context, see Shirakawa's year-round climate.

Daytime high
15°
7th warmest
Overnight low
6th coldest
Precipitation
112 mm
12 wet days
Daylight
13 hours
5:11 AM – 6:08 PM
Cloud cover
62%
6th clearest
Wind
10 km/h
3rd windiest
Solar energy
4.95 kWh/m²
Travel score
4.4
out of 10

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 13°C in the first days to 18°C by the end.

A typical April day in Shirakawa reaches about 15°C in the afternoon and slips back to 5°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 21°C. Set against its neighbours, April runs about 6°C warmer than March and about 5°C cooler than May.

10°20°151015202530
Avg high (°C)Avg low (°C)
1123
2123
3133
4133
5133
6134
7134
8144
9144
10144
11145
12155
13155
14155
15155
16156
17166
18166
19166
20166
21167
22167
23177
24177
25177
26177
27188
28188
29188
30188

How April really feels in Shirakawa

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 2 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
2
wind chill below the day's low

The story in April is cold — wind chill drags the overnight "feels like" below the raw low.

Shirakawa 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 / -2°537.46.19.70.0
Feb / -2°517.44.910.60.3
Mar / 9811.94.711.71.9
Apr15° / 112121.112.94.4
May20° / 11°128130145.8
Jun23° / 16°14315.5014.55.6
Jul27° / 20°19518.8014.34.9
Aug28° / 21°14616.1013.45.0
Sep24° / 17°17815012.35.7
Oct18° / 11°15912.10115.5
Nov13° / 788.10.3103.7
Dec / 517.43.49.51.1

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% 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 55%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24753
34654
44753
54753
64654
74753
84654
94654
104753
114654
124654
134555
144555
154456
164456
174456
184357
194357
204357
214357
224357
234456
244456
254456
264456
274258
284357
294357
304357

Chance of precipitation in April

Any precipitationSnow

Shirakawa gets around 112 mm of rain and snow over 12 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 41% and peaks near 42% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1418
2408
3407
4407
5406
6406
7406
8405
9405
10405
11415
12414
13414
14424
15424
16424
17424
18424
19423
20423
21423
22412
23412
24412
25402
26401
27401
28391
29391
30390

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
110000
210000
310000
410000
510000
610000
710000
810000
910000
1010000
1110000
1210000
1310000
1410000
159910
169910
179910
189910
199811
209811
219811
229721
239721
249721
259631
269631
279541
289541
299451
309451

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
2410calm
2510calm
2610calm
2710calm
289calm
299calm
309calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 30 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 5:33 AM to 4:52 AM, and sunset from 5:54 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:335:54
212.45:315:55
312.45:305:56
412.55:285:57
512.55:275:58
612.65:255:59
712.65:246:00
812.65:226:01
912.75:216:01
1012.75:196:02
1112.85:186:03
1212.85:166:04
1312.85:156:05
1412.95:146:06
1512.95:126:07
1613.05:116:08
1713.05:096:09
1813.05:086:10
1913.15:066:10
2013.15:056:11
2113.15:046:12
2213.25:026:13
2313.25:016:14
2413.35:006:15
2513.34:586:16
2613.34:576:17
2713.44:566:18
2813.44:556:19
2913.44:536:19
3013.54:526:20

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.95 kWh/m².

For context, solar energy here swings from a low near 2.28 kWh/m² to a high of 5.24 kWh/m² in May across the year — April's 4.95 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in April

Hazard calendar for Shirakawa

In seasonPeak

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

Shirakawa 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 Shirakawa?

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

4.4
Sightseeing
7th-best month of the year
0.6
Beach & pool
7th-best month of the year

April is a reasonable time to visit Shirakawa for sightseeing.

What to pack for Shirakawa in April

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

In April, Shirakawa sees daytime highs around 15°C and nights near 5°C. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

Sea temperature near Shirakawa in April

The nearest coast averages about 14°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 61 km away) is warmest in August at about 24°C and coldest in March near 12°C.

It's comfortable for a long swim from Jul 1 to Oct 22 — about 3.7 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May16Cool
Jun19Cool
Jul21Refreshing
Aug24Refreshing
Sep23Refreshing
Oct20Refreshing
Nov18Cool
Dec16Cool

UV index in Shirakawa 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 Shirakawa peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 17UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Low

Air quality in Shirakawa 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 Shirakawa is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1821 µg/m³Dec 189 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug13Moderate
Sep11Good
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Shirakawa?

Shirakawa sits at 37.1°N, 140.3°E, 323 m above sea level, in Japan. The nearest listed city is Kumakura, 9.0 km away.

Topography around Shirakawa

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

Within 3 km, the terrain around Shirakawa has only modest variations in elevation — a maximum elevation change of 172 m around an average of 353 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 561 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,457 m.

The land around Shirakawa is covered by trees (48%) and cropland (35%) within 3 km, trees (66%) and cropland (22%) within 16 km, and trees (74%) within 80 km.

3 km
172 m
16 km
561 m
80 km
2,457 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Kumakura 9.0 km · Yabuki 10 km · Ishikawa 17 km · Nasu 17 km · Sukagawa 21 km · Nasushiobara 24 km · Kuroiso 25 km · Kōriyama 33 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 Shirakawa (37.1195°, 140.2621°, elevation 323 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).