Niseko weather in April

In April, Niseko sees average daytime highs of 9°C and overnight lows near 0°C, with 75 mm of precipitation across 11.9 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 6°C in the first days to 12°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 24 min at the start of April to 13 h 48 min by month's end. Set against the rest of the year, April is Niseko's 1st-clearest and 6th-windiest month. For the whole year in context, see Niseko's year-round climate.

Daytime high
7th warmest
Overnight low
6th coldest
Precipitation
75 mm
11.9 wet days
Daylight
13 h 12 min
5:03 AM – 6:12 PM
Cloud cover
59%
1st clearest
Wind
8 km/h
6th windiest
Solar energy
5.37 kWh/m²
Travel score
1.7
out of 10

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 6°C in the first days to 12°C by the end.

A typical April day in Niseko reaches about 9°C in the afternoon and slips back to 0°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 13°C. Set against its neighbours, April runs about 7°C warmer than March and about 6°C cooler than May.

-10°10°20°151015202530
Avg high (°C)Avg low (°C)
15-3
26-2
36-2
46-2
56-2
67-2
77-1
87-1
97-1
107-1
118-1
1280
1380
1480
1590
1691
1791
1891
19101
20101
21102
22102
23112
24112
25112
26113
27123
28123
29123
30124

How April really feels in Niseko

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 24 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
24
wind chill below the day's low

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

Niseko weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -10°5812.618.59.20.0
Feb-2° / -9°5110.415.610.30.0
Mar / -6°7113.213.911.60.0
Apr / 7511.95.213.11.7
May15° / 9412.60.314.44.3
Jun19° / 11°7710.6015.15.8
Jul23° / 16°13613.9014.86.0
Aug24° / 17°18213.8013.76.1
Sep20° / 12°14113.9012.35.6
Oct14° / 9913.70.610.83.7
Nov / -1°9214.810.19.60.6
Dec-1° / -7°7614.518.88.90.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in April, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24753
34753
44654
54753
64753
74852
84852
94852
104753
114852
124753
134753
144753
154753
164654
174753
184654
194753
204753
214753
224753
234753
244654
254654
264654
274555
284555
294555
304555

Chance of precipitation in April

Any precipitationSnow

Niseko gets around 75 mm of rain and snow over 11.9 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 40% and peaks near 41% on the wettest days, and about 5 days bring snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
14031
24030
34028
44027
54026
64025
74024
84023
94022
103921
113920
123919
133918
143918
153917
163917
173916
183915
193915
203914
213913
223913
233912
243911
253911
263910
27409
28408
29417
30417

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100

Wind in April

Winds average 8 km/h in April.

Across April, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over April. Sunrise moves from 5:29 AM to 4:40 AM, and sunset from 5:55 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:295:55
212.55:275:56
312.55:255:57
412.65:235:58
512.65:226:00
612.75:206:01
712.75:186:02
812.85:166:03
912.85:156:04
1012.95:136:05
1112.95:116:07
1213.05:096:08
1313.05:086:09
1413.15:066:10
1513.15:046:11
1613.25:036:12
1713.25:016:14
1813.34:596:15
1913.34:586:16
2013.44:566:17
2113.44:546:18
2213.44:536:19
2313.54:516:21
2413.54:496:22
2513.64:486:23
2613.64:466:24
2713.74:456:25
2813.74:436:26
2913.84:426:28
3013.84:406:29

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.37 kWh/m².

For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 5.48 kWh/m² in May across the year — April's 5.37 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in April

Hazard calendar for Niseko

In seasonPeak

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

Niseko 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 Niseko?

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

1.7
Sightseeing
7th-best month of the year
0.0
Beach & pool
7th-best month of the year

April is a weaker month for outdoor sightseeing in Niseko.

What to pack for Niseko in April

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

In April, Niseko sees daytime highs around 9°C and nights near 0°C. Pack a warm layer. Worth having: rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

Sea temperature near Niseko in April

The nearest coast averages about 8°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 26 km away) is warmest in August at about 22°C and coldest in February near 6°C.

It's comfortable for a long swim from Jul 29 to Sep 25 — about 1.9 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan8Bracing
Feb6Bracing
Mar6Bracing
Apr8Bracing
May11Bracing
Jun15Bracing
Jul19Cool
Aug22Refreshing
Sep21Refreshing
Oct17Cool
Nov13Bracing
Dec10Bracing

UV index in Niseko in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Niseko peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 18UV 8Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr5High
May8Very high
Jun7High
Jul5Moderate
Aug9Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Niseko 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 Niseko is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1219 µg/m³Dec 158 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar19Moderate
Apr20Moderate
May18Moderate
Jun12Moderate
Jul11Good
Aug10Good
Sep9Good
Oct11Good
Nov9Good
Dec8Good
Location & terrain

Where is Niseko?

Niseko sits at 42.8°N, 140.7°E, 0 m above sea level, in Japan. The nearest listed city is Kutchan, 11 km away.

Topography around Niseko

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

Within 3 km, the terrain around Niseko has only modest variations in elevation — a maximum elevation change of 199 m around an average of 161 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,881 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,867 m.

The land around Niseko is covered by trees (56%) and cropland (31%) within 3 km, trees (80%) within 16 km, and water (47%) and trees (44%) within 80 km.

3 km
199 m
16 km
1,881 m
80 km
1,867 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Kutchan 11 km · Date 41 km · Yoichi 44 km · Otaru 50 km · Noboribetsu 57 km · Muroran 60 km · Sapporo 61 km · Shiraoi 61 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 Niseko (42.8089°, 140.686°, elevation 0 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).