Nakano weather in April

In April, Nakano sees average daytime highs of 13°C and overnight lows near 3°C, with 115 mm of precipitation across 14.6 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 10°C in the first days to 16°C by the end. The sky is clear or mostly clear about 27% 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 Nakano's 1st-clearest and 2nd-windiest month. For the whole year in context, see Nakano's year-round climate.

Daytime high
13°
7th warmest
Overnight low
6th coldest
Precipitation
115 mm
14.6 wet days
Daylight
12 h 54 min
5:19 AM – 6:15 PM
Cloud cover
62%
1st clearest
Wind
6 km/h
2nd windiest
Solar energy
5.31 kWh/m²
Travel score
3.4
out of 10

Nakano is city in Nagano Prefecture, Japan.

Density
380/km²
people per km²
Founded
1954

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 10°C in the first days to 16°C by the end.

A typical April day in Nakano reaches about 13°C in the afternoon and slips back to 3°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 19°C. Set against its neighbours, April runs about 7°C warmer than March and about 6°C cooler than May.

10°20°151015202530
Avg high (°C)Avg low (°C)
1100
2100
3100
4100
5111
6111
7111
8111
9121
10122
11122
12122
13132
14132
15133
16133
17143
18143
19143
20144
21154
22154
23154
24155
25165
26165
27165
28175
29176
30176

How April really feels in Nakano

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 10 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
10
wind chill below the day's low

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

Nakano weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -6°14722.823.49.80.0
Feb / -5°12018.918.510.60.0
Mar / -2°13818.614.811.70.6
Apr13° / 11514.63.512.93.4
May19° / 13314.70.113.95.5
Jun23° / 14°17818.1014.55.2
Jul26° / 18°24321.7014.34.7
Aug27° / 19°16919.6013.44.9
Sep23° / 15°18217012.25.4
Oct17° / 16115.60.111.14.7
Nov11° / 11616.44.6102.3
Dec / -3°13820.4179.50.2

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% 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 57%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34555
44555
54555
64555
74555
84555
94555
104555
114555
124456
134555
144456
154456
164357
174357
184258
194258
204159
214159
224159
234159
244159
254258
264159
274159
284258
294258
304258

Chance of precipitation in April

Any precipitationSnow

Nakano gets around 115 mm of rain and snow over 14.6 wet days in April, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 49% and peaks near 54% on the wettest days, and about 4 days bring snow. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
15430
25428
35327
45325
55324
65222
75221
85119
95118
105117
115015
125014
134913
144912
154911
164810
17489
18488
19477
20476
21476
22475
23464
24464
25463
26453
27453
28442
29442
30432

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 (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
24991
25991
26991
27991
28991
29991
30991

Wind in April

Winds average 6 km/h in April.

Across April, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 5:41 AM to 5:00 AM, and sunset from 6:02 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:416:02
212.45:396:03
312.45:386:03
412.55:366:04
512.55:356:05
612.55:336:06
712.65:326:07
812.65:306:08
912.75:296:09
1012.75:276:10
1112.75:266:10
1212.85:246:11
1312.85:236:12
1412.95:216:13
1512.95:206:14
1612.95:196:15
1713.05:176:16
1813.05:166:17
1913.15:146:18
2013.15:136:18
2113.15:126:19
2213.25:106:20
2313.25:096:21
2413.25:086:22
2513.35:076:23
2613.35:056:24
2713.35:046:25
2813.45:036:26
2913.45:026:26
3013.55:006:27

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.31 kWh/m².

For context, solar energy here swings from a low near 2.15 kWh/m² to a high of 5.65 kWh/m² in May across the year — April's 5.31 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in April

Hazard calendar for Nakano

In seasonPeak

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

Nakano 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 Nakano?

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

3.4
Sightseeing
7th-best month of the year
0.2
Beach & pool
7th-best month of the year

April is a weaker month for outdoor sightseeing in Nakano.

What to pack for Nakano in April

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

In April, Nakano sees daytime highs around 13°C and nights near 3°C. Pack rain gear. Worth having: a warm layer and sun protection. About 15 days see rain.

rain geara warm layersun protection

Sea temperature near Nakano in April

The nearest coast averages about 11°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 47 km away) is warmest in August at about 27°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 20 to Nov 1 — about 4.4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar10Bracing
Apr11Bracing
May15Bracing
Jun20Cool
Jul23Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec15Cool

UV index in Nakano 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 Nakano peaks around August 13 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highVery highModerateAug 13UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May9Very high
Jun9Very high
Jul10Very high
Aug10Extreme
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Nakano 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 Nakano is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 1510 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug13Moderate
Sep12Good
Oct11Good
Nov11Good
Dec10Good
Location & terrain

Where is Nakano?

Nakano sits at 36.8°N, 138.4°E, 380 m above sea level, in Japan. The nearest listed city is Iiyama, 11 km away.

Topography around Nakano

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

Within 3 km, the terrain around Nakano has significant variations in elevation — a maximum elevation change of 376 m around an average of 401 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,851 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,069 m.

The land around Nakano is covered by trees (42%), artificial surfaces (31%) and cropland (22%) within 3 km, trees (74%) within 16 km, and trees (73%) within 80 km.

3 km
376 m
16 km
1,851 m
80 km
3,069 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Iiyama 11 km · Suzaka 12 km · Nagano 20 km · Arai 31 km · Myoko 32 km · Chikuma 35 km · Sakaki 36 km · Ueda 39 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 Nakano (36.75°, 138.3667°, elevation 380 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).