Wakkanai weather in April

In April, Wakkanai sees average daytime highs of 7°C and overnight lows near 2°C, with 58 mm of precipitation across 9.7 wet days and about 13.2 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 4°C in the first days to 9°C by the end. The sky is clear or mostly clear about 29% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 30 min at the start of April to 14 hours by month's end. Set against the rest of the year, April is Wakkanai's 3rd-clearest and 6th-windiest month. For the whole year in context, see Wakkanai's year-round climate.

Daytime high
7th warmest
Overnight low
6th coldest
Precipitation
58 mm
9.7 wet days
Daylight
13 h 18 min
4:55 AM – 6:12 PM
Cloud cover
61%
3rd clearest
Wind
20 km/h
6th windiest
Solar energy
5.15 kWh/m²
Travel score
0.8
out of 10

Wakkanai is city in Sōya Subprefecture, Hokkaido, Japan.

Density
44/km²
people per km²
Founded
1949

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 4°C in the first days to 9°C by the end.

A typical April day in Wakkanai reaches about 7°C in the afternoon and slips back to 2°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 3°C and 11°C. Set against its neighbours, April runs about 6°C warmer than March and about 5°C cooler than May.

-5°10°15°151015202530
Avg high (°C)Avg low (°C)
140
240
340
450
550
651
751
851
961
1061
1161
1262
1362
1472
1572
1672
1772
1872
1973
2083
2183
2283
2383
2483
2593
2694
2794
2894
2994
3094

How April really feels in Wakkanai

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 30 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
30
wind chill below the day's low

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

Wakkanai 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° / -7°5613.320.88.90.0
Feb-3° / -7°4310.515.710.10.0
Mar / -3°5410.71211.60.0
Apr / 589.74.413.20.8
May11° / 7110.30.514.72.9
Jun15° / 10°629.1015.44.6
Jul19° / 15°969.4015.16.0
Aug22° / 17°11510.7013.96.3
Sep19° / 14°11412012.35.8
Oct13° / 9613.50.110.73.5
Nov / 9114.89.49.30.6
Dec-0° / -4°7616.420.38.60.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24555
34456
44456
54555
64555
74555
84555
94456
104456
114357
124357
134357
144357
154357
164357
174357
184258
194258
204258
214258
224258
234258
244258
254258
264159
274159
284159
294060
304060

Chance of precipitation in April

Any precipitationSnow

Wakkanai gets around 58 mm of rain and snow over 9.7 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 33% and peaks near 36% on the wettest days, and about 4 days bring snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
13124
23123
33122
43121
53120
63120
73119
83119
93218
103218
113217
123217
133216
143316
153315
163315
173314
183314
193313
203313
213412
223412
233411
243410
25349
26359
27358
28357
29366
30366

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 20 km/h in April.

Across April, daily wind ranges from about 20 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
120breezy
220breezy
320light breeze
420light breeze
520light breeze
620light breeze
720light breeze
820light breeze
920light breeze
1020light breeze
1120breezy
1220breezy
1320breezy
1420breezy
1520breezy
1620breezy
1720breezy
1820light breeze
1920light breeze
2020light breeze
2120light breeze
2220light breeze
2320light breeze
2420light breeze
2520light breeze
2620light breeze
2720light breeze
2820light breeze
2920light breeze
3020light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 30 min at the start of April to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 90 minutes over April. Sunrise moves from 5:24 AM to 4:31 AM, and sunset from 5:52 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:245:52
212.55:225:54
312.65:205:55
412.65:185:56
512.75:165:57
612.75:145:59
712.85:126:00
812.95:106:01
912.95:086:03
1013.05:066:04
1113.05:046:05
1213.15:036:07
1313.15:016:08
1413.24:596:09
1513.24:576:11
1613.34:556:12
1713.34:536:13
1813.44:526:14
1913.44:506:16
2013.54:486:17
2113.54:466:18
2213.64:456:20
2313.64:436:21
2413.74:416:22
2513.74:396:24
2613.84:386:25
2713.84:366:26
2813.94:346:27
2913.94:336:29
3014.04:316:30

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.15 kWh/m².

For context, solar energy here swings from a low near 1.29 kWh/m² to a high of 5.62 kWh/m² in May across the year — April's 5.15 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.4Bright
305.4Bright
Planning a trip in April

Is April a good time to visit Wakkanai?

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

0.8
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 Wakkanai.

What to pack for Wakkanai in April

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

In April, Wakkanai sees daytime highs around 7°C and nights near 2°C. Pack a warm layer. Worth having: a heavy coat, rain gear and sun protection. About 10 days see rain.

a warm layera heavy coatrain gearsun protection

Sea temperature near Wakkanai in April

The nearest coast averages about 6°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 20°C and coldest in February near 3°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar4Bracing
Apr6Bracing
May9Bracing
Jun12Bracing
Jul17Cool
Aug20Cool
Sep20Cool
Oct16Cool
Nov11Bracing
Dec7Bracing

UV index in Wakkanai 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 Wakkanai peaks around August 13 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowAug 13UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar2Moderate
Apr5Moderate
May7High
Jun6High
Jul7High
Aug8Very high
Sep5High
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Wakkanai 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 Wakkanai is worst in April — around 15 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 5 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1115 µg/m³Dec 235 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb9Good
Mar15Moderate
Apr15Moderate
May12Moderate
Jun7Good
Jul7Good
Aug7Good
Sep6Good
Oct8Good
Nov8Good
Dec5Good
Location & terrain

Where is Wakkanai?

Wakkanai sits at 45.4°N, 141.7°E, 7 m above sea level, in Japan. The nearest listed city is Makubetsu, 12 km away.

NayoroNevel’skMinamishibetsuchōKorsakovRumoiMombetsu

Topography around Wakkanai

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

Within 3 km, the terrain around Wakkanai has only modest variations in elevation — a maximum elevation change of 206 m around an average of 49 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 208 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,669 m.

The land around Wakkanai is covered by trees (40%) and water (32%) within 3 km, water (68%) within 16 km, and water (74%) and trees (20%) within 80 km.

3 km
206 m
16 km
208 m
80 km
1,669 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Makubetsu 12 km · Nayoro 133 km · Nevel’sk 142 km · Minamishibetsuchō 150 km · Korsakov 161 km · Rumoi 164 km · Mombetsu 177 km · Kholmsk 184 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 Wakkanai (45.4094°, 141.6739°, elevation 7 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. 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).