Sapporo weather in April

In April, Sapporo sees average daytime highs of 9°C and overnight lows near 1°C, with 73 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 Sapporo's 1st-clearest and 3rd-windiest month. For the whole year in context, see Sapporo's year-round climate.

Daytime high
7th warmest
Overnight low
6th coldest
Precipitation
73 mm
11.9 wet days
Daylight
13 h 12 min
5:00 AM – 6:10 PM
Cloud cover
59%
1st clearest
Wind
10 km/h
3rd windiest
Solar energy
5.29 kWh/m²
Travel score
1.8
out of 10

Sapporo is city on Hokkaido, Japan.

Air quality
Moderate
PM2.5 14 µg/m³ · 2010
Density
1,760/km²
people per km²
Founded
1922

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 6°C in the first days to 12°C by the end.

A typical April day in Sapporo reaches about 9°C in the afternoon and slips back to 1°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 14°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)
16-2
26-2
36-2
46-2
57-2
67-1
77-1
87-1
98-1
108-1
1180
1280
1390
1490
1591
1691
17101
18101
19101
20102
21112
22112
23112
24113
25123
26123
27123
28123
29124
30134

How April really feels in Sapporo

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 25 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
25
wind chill below the day's low

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

Sapporo 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°5110.316.39.20.0
Feb-2° / -9°469.814.110.20.0
Mar / -6°6412.112.811.60.0
Apr / 7311.95.413.11.8
May15° / 9312.60.414.44.3
Jun19° / 12°8911.9015.15.7
Jul23° / 16°13813.9014.96.0
Aug24° / 18°19114.2013.86.1
Sep20° / 13°15514.7012.35.5
Oct14° / 9913.60.710.83.8
Nov / -0°8814.49.29.50.7
Dec-1° / -6°7312.717.78.90.0

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 17% of April, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
24951
35050
45050
55050
65050
74951
84951
95050
104951
114951
124951
134951
144852
154852
164852
174951
184753
194852
204852
214852
224852
234753
244753
254753
264753
274654
284654
294555
304555

Chance of precipitation in April

Any precipitationSnow

Sapporo gets around 73 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 39% and peaks near 42% on the wettest days, and about 5 days bring snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
13930
23929
33927
43926
53925
63924
73823
83822
93822
103821
113820
123820
133819
143819
153819
163918
173918
183917
194017
204016
214015
224015
234014
244113
254112
264111
274110
284210
29429
30428

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 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 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 5:26 AM to 4:37 AM, and sunset from 5:52 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:265:52
212.55:245:54
312.55:225:55
412.65:215:56
512.65:195:57
612.75:175:58
712.75:156:00
812.85:136:01
912.85:126:02
1012.95:106:03
1112.95:086:04
1213.05:066:05
1313.05:056:07
1413.15:036:08
1513.15:016:09
1613.25:006:10
1713.24:586:11
1813.34:566:12
1913.34:556:14
2013.44:536:15
2113.44:516:16
2213.54:506:17
2313.54:486:18
2413.64:466:20
2513.64:456:21
2613.64:436:22
2713.74:426:23
2813.74:406:24
2913.84:396:25
3013.84:376:27

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.29 kWh/m².

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 5.5 kWh/m² in May across the year — April's 5.29 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
Planning a trip in April

Hazard calendar for Sapporo

In seasonPeak

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

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

Sapporo's rainy season runs May–November, 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 Sapporo?

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

1.8
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 Sapporo.

What to pack for Sapporo in April

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

In April, Sapporo sees daytime highs around 9°C and nights near 1°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 Sapporo in April

The nearest coast averages about 7°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 34 km away) is warmest in August at about 22°C and coldest in February near 5°C.

It's comfortable for a long swim from Jul 31 to Sep 22 — about 1.8 months when the water holds above 20°C.

10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan7Bracing
Feb5Bracing
Mar5Bracing
Apr7Bracing
May10Bracing
Jun14Bracing
Jul19Cool
Aug22Refreshing
Sep21Refreshing
Oct17Cool
Nov13Bracing
Dec9Bracing

UV index in Sapporo 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 Sapporo peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highHighModerateLowAug 18UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr5High
May7Very high
Jun7High
Jul5Moderate
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Sapporo 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 Sapporo is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 9 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Sapporo's WHO annual average of 14 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1222 µg/m³Dec 159 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb16Moderate
Mar21Moderate
Apr22Moderate
May20Moderate
Jun14Moderate
Jul13Moderate
Aug11Good
Sep10Good
Oct12Good
Nov10Good
Dec9Good
Location & terrain

Where is Sapporo?

Sapporo sits at 43.1°N, 141.3°E, 26 m above sea level, in Japan. The nearest listed city is Ebetsu, 17 km away.

Topography around Sapporo

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

Within 3 km, the terrain around Sapporo has only modest variations in elevation — a maximum elevation change of 37 m around an average of 20 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,095 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,863 m.

The land around Sapporo is covered by artificial surfaces (90%) within 3 km, trees (44%) and artificial surfaces (36%) within 16 km, and trees (57%) and water (27%) within 80 km.

3 km
37 m
16 km
1,095 m
80 km
1,863 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Ebetsu 17 km · Ishikari 19 km · Kitahiroshima 20 km · Tōbetsu 22 km · Eniwa 27 km · Otaru 31 km · Iwamizawa 36 km · Chitose 37 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 Sapporo (43.0667°, 141.35°, elevation 26 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).