Nakanojō weather in May

In May, Nakanojō sees average daytime highs of 18°C and overnight lows near 10°C, with 160 mm of precipitation across 16.8 wet days and about 13.9 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 20°C by the end. The sky is clear or mostly clear about 23% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of May to 14 h 18 min by month's end. Set against the rest of the year, May is Nakanojō's 8th-clearest and 7th-windiest month. For the whole year in context, see Nakanojō's year-round climate.

Daytime high
18°
5th warmest
Overnight low
10°
8th coldest
Precipitation
160 mm
16.8 wet days
Daylight
13 h 54 min
4:43 AM – 6:39 PM
Cloud cover
68%
8th clearest
Wind
6 km/h
7th windiest
Solar energy
5.53 kWh/m²
Travel score
4.9
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 May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 17°C in the first days to 20°C by the end.

A typical May day in Nakanojō reaches about 18°C in the afternoon and slips back to 10°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 23°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1167
2177
3177
4177
5178
6178
7178
8188
9188
10189
11189
12189
13189
14189
15189
161810
171910
181910
191910
201910
211910
221911
231911
241911
251911
262011
272011
282011
292012
302012
312012

How May really feels in Nakanojō

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

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Nakanojō weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 6th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24258
34258
44159
54159
64159
74060
84060
93961
103961
113961
123961
133862
143763
153763
163763
173763
183763
193763
203664
213664
223664
233664
243565
253466
263367
273367
283268
293268
303268
313169

Chance of precipitation in May

Any precipitationSnow

Nakanojō gets around 160 mm of rain and snow over 16.8 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 54% and peaks near 59% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1493
2492
3502
4502
5512
6512
7522
8522
9532
10532
11541
12541
13541
14541
15551
16551
17551
18550
19550
20550
21550
22550
23550
24550
25550
26550
27560
28560
29570
30580
31590

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 91% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19820
29820
39820
49820
59820
69820
79820
89730
99730
109730
119640
129640
139550
149550
159460
169460
179370
189280
199280
209190
2190100
2289110
2387121
2486131
2585141
2684151
2783161
2881181
2980191
3078211
3176222

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 30 min at the start of May to 14 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 4:58 AM to 4:33 AM, and sunset from 6:26 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.54:586:26
213.54:566:27
313.54:556:28
413.64:546:29
513.64:536:30
613.64:526:31
713.74:516:31
813.74:506:32
913.74:496:33
1013.84:486:34
1113.84:476:35
1213.84:466:36
1313.94:456:37
1413.94:446:37
1513.94:436:38
1613.94:436:39
1714.04:426:40
1814.04:416:41
1914.04:406:42
2014.04:406:42
2114.14:396:43
2214.14:386:44
2314.14:376:45
2414.14:376:46
2514.24:366:46
2614.24:366:47
2714.24:356:48
2814.24:356:49
2914.34:346:49
3014.34:346:50
3114.34:336:51

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.53 kWh/m² — the sunniest month for solar.

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 — May's 5.53 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Hazard calendar for Nakanojō

In seasonPeak

In May, Nakanojō sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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 May a good time to visit Nakanojō?

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

4.9
Sightseeing
1st-best month of the year
1.8
Beach & pool
5th-best month of the year

May is a reasonable time to visit Nakanojō for sightseeing.

What to pack for Nakanojō in May

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

In May, Nakanojō sees daytime highs around 18°C and nights near 10°C. Pack rain gear. Worth having: sun protection. About 17 days see rain.

rain gearsun protection

UV index in Nakanojō in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). 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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).