Nakanojō weather in April

In April, Nakanojō sees average daytime highs of 13°C and overnight lows near 4°C, with 121 mm of precipitation across 15 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 10°C in the first days to 16°C by the end. The sky is clear or mostly clear about 28% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of April to 13 h 24 min by month's end. Set against the rest of the year, April is Nakanojō's 6th-clearest and 5th-windiest month. For the whole year in context, see Nakanojō's year-round climate.

Daytime high
13°
7th warmest
Overnight low
6th coldest
Precipitation
121 mm
15 wet days
Daylight
12 h 54 min
5:17 AM – 6:13 PM
Cloud cover
62%
6th clearest
Wind
7 km/h
5th windiest
Solar energy
5.32 kWh/m²
Travel score
3.2
out of 10

Nakanojō is town in Agatsuma District, Gunma Prefecture, Japan.

Density
35/km²
people per km²
Founded
1889

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 Nakanojō reaches about 13°C in the afternoon and slips back to 4°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 19°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)
1101
2101
3101
4111
5112
6112
7112
8122
9122
10123
11123
12123
13133
14134
15134
16134
17134
18144
19145
20145
21145
22155
23155
24156
25156
26156
27166
28166
29167
30167

How April really feels in Nakanojō

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 8 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
8
wind chill below the day's low

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

Nakanojō 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 / -5°7814.616.49.80.0
Feb / -5°7413.51410.60.0
Mar / -2°11515.611.811.70.8
Apr13° / 121153.412.93.2
May18° / 10°16016.80.313.94.9
Jun21° / 14°22722014.54.4
Jul25° / 18°27324.2014.24.4
Aug26° / 19°21623.5013.44.6
Sep22° / 15°21519.7012.24.9
Oct16° / 17815.60.211.14.5
Nov11° / 7811.63.5102.5
Dec / -2°6713.512.49.50.2

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24654
34555
44555
54555
64555
74555
84555
94555
104555
114555
124456
134555
144456
154258
164357
174258
184357
194258
204357
214258
224258
234357
244258
254258
264258
274357
284357
294357
304357

Chance of precipitation in April

Any precipitationSnow

Nakanojō gets around 121 mm of rain and snow over 15 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 50% and peaks near 51% on the wettest days, and about 3 days bring snow.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
15026
25025
35023
45022
55021
65020
75019
85018
95017
105016
115015
125114
135113
145112
155111
165110
175110
18519
19518
20517
21517
22516
23505
24505
25504
26504
27504
28493
29493
30493

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
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
29991
30991

Wind in April

Winds average 7 km/h in April.

Across April, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 24 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 5:39 AM to 4:59 AM, and sunset from 6:00 PM to 6:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:396:00
212.45:376:01
312.45:366:01
412.55:346:02
512.55:336:03
612.55:316:04
712.65:306:05
812.65:286:06
912.75:276:07
1012.75:256:08
1112.75:246:08
1212.85:236:09
1312.85:216:10
1412.95:206:11
1512.95:186:12
1612.95:176:13
1713.05:156:14
1813.05:146:15
1913.05:136:15
2013.15:116:16
2113.15:106:17
2213.25:096:18
2313.25:076:19
2413.25:066:20
2513.35:056:21
2613.35:046:22
2713.35:026:23
2813.45:016:23
2913.45:006:24
3013.44:596:25

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.32 kWh/m².

For context, solar energy here swings from a low near 2.38 kWh/m² to a high of 5.53 kWh/m² in May across the year — April's 5.32 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.1Bright
35.1Bright
45.1Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in April

Hazard calendar for Nakanojō

In seasonPeak

None of Nakanojō's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Nakanojō's rainy season runs May–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is April a good time to visit Nakanojō?

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

3.2
Sightseeing
7th-best month of the year
0.1
Beach & pool
7th-best month of the year

April is a weaker month for outdoor sightseeing in Nakanojō.

What to pack for Nakanojō in April

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

In April, Nakanojō sees daytime highs around 13°C and nights near 4°C. Pack rain gear. Worth having: a warm layer and sun protection. About 15 days see rain.

rain geara warm layersun protection

UV index in Nakanojō 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 Nakanojō peaks around July 18 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highModerateJul 18UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Nakanojō 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 Nakanojō is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1821 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug13Moderate
Sep12Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Nakanojō?

Nakanojō sits at 36.6°N, 138.8°E, 371 m above sea level, in Japan. The nearest listed city is Minakami, 17 km away.

Topography around Nakanojō

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

Within 3 km, the terrain around Nakanojō has significant variations in elevation — a maximum elevation change of 454 m around an average of 421 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,443 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,852 m.

The land around Nakanojō is covered by trees (61%) within 3 km, trees (89%) within 16 km, and trees (81%) within 80 km.

3 km
454 m
16 km
1,443 m
80 km
2,852 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Minakami 17 km · Shibukawa 18 km · Numata 19 km · Ogura 20 km · Kanekomachi 24 km · Annaka 29 km · Maebashi 30 km · Karuizawa 32 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 Nakanojō (36.5872°, 138.8408°, elevation 371 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. 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).