Nanaku weather in May

In May, Nanaku sees average daytime highs of 19°C and overnight lows near 10°C, with 97 mm of precipitation across 12.5 wet days and about 14.2 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 27% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 42 min at the start of May to 14 h 36 min by month's end. Set against the rest of the year, May is Nanaku's 6th-clearest and 7th-windiest month. For the whole year in context, see Nanaku's year-round climate.

Daytime high
19°
5th warmest
Overnight low
10°
8th coldest
Precipitation
97 mm
12.5 wet days
Daylight
14 h 12 min
4:24 AM – 6:38 PM
Cloud cover
64%
6th clearest
Wind
10 km/h
7th windiest
Solar energy
5.51 kWh/m²
Travel score
5.6
out of 10

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 Nanaku reaches about 19°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 13°C and 24°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1177
2177
3178
4178
5178
6188
7188
8188
9189
10189
11189
12189
13189
14189
151910
161910
171910
181910
191910
201910
211910
222011
232011
242011
252011
262011
272011
282011
292012
302012
312112

How May really feels in Nanaku

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.

Nanaku 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 / -7°518.699.40.0
Feb / -6°548.89.110.40.0
Mar / -3°8212.58.411.70.7
Apr13° / 8613.32.4133.6
May19° / 10°9712.50.114.25.6
Jun22° / 14°11212.4014.85.9
Jul25° / 18°15515.2014.65.8
Aug27° / 19°15915.1013.65.6
Sep23° / 15°14413.3012.36.0
Oct17° / 11110.6010.95.3
Nov10° / 6511.22.29.82.3
Dec / -3°60107.39.20.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

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

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34753
44654
54654
64555
74555
84456
94357
104357
114258
124258
134258
144357
154258
164258
174159
184159
194159
204258
214159
224159
234159
244159
254159
264159
274258
284258
294258
304159
314159

Chance of precipitation in May

Any precipitationSnow

Nanaku gets around 97 mm of rain and snow over 12.5 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 40% and peaks near 42% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1423
2422
3422
4412
5411
6411
7411
8411
9411
10411
11411
12411
13410
14400
15400
16400
17400
18400
19400
20400
21400
22400
23390
24390
25390
26390
27390
28390
29390
30390
31390

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
110000
29910
39910
49910
59910
69910
79910
89820
99820
109820
119820
129730
139730
149640
159640
169640
179550
189460
199460
209370
219280
229190
2390100
2489110
2588120
2687130
2785150
2884160
2982180
3080191
3178211

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 42 min at the start of May to 14 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 4:41 AM to 4:13 AM, and sunset from 6:23 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.74:416:23
213.74:406:24
313.84:396:25
413.84:376:26
513.84:366:27
613.94:356:28
713.94:346:29
814.04:336:30
914.04:316:31
1014.04:306:32
1114.14:296:33
1214.14:286:34
1314.14:276:35
1414.24:266:36
1514.24:256:37
1614.24:246:38
1714.34:236:39
1814.34:226:40
1914.34:216:41
2014.44:216:42
2114.44:206:43
2214.44:196:44
2314.44:186:45
2414.54:176:46
2514.54:176:47
2614.54:166:47
2714.54:156:48
2814.64:156:49
2914.64:146:50
3014.64:146:51
3114.64:136:52

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.51 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.85 kWh/m² to a high of 5.51 kWh/m² in May across the year — May's 5.51 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in May

Hazard calendar for Nanaku

In seasonPeak

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

Nanaku 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 May a good time to visit Nanaku?

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

5.6
Sightseeing
4th-best month of the year
2.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Nanaku for sightseeing.

What to pack for Nanaku in May

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

In May, Nanaku sees daytime highs around 19°C and nights near 10°C. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

Sea temperature near Nanaku in May

The nearest coast averages about 10°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 39 km away) is warmest in August at about 21°C and coldest in March near 7°C.

It's comfortable for a long swim from Aug 8 to Sep 26 — about 1.6 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan10Bracing
Feb8Bracing
Mar7Bracing
Apr8Bracing
May10Bracing
Jun14Bracing
Jul18Cool
Aug21Refreshing
Sep21Refreshing
Oct18Cool
Nov15Cool
Dec12Bracing

UV index in Nanaku in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nanaku peaks around August 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 19UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar3Moderate
Apr6High
May8Very high
Jun7Very high
Jul5Moderate
Aug9Very high
Sep7High
Oct5Moderate
Nov2Moderate
Dec1Low

Air quality in Nanaku 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 Nanaku 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 1421 µg/m³Dec 1510 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May19Moderate
Jun14Moderate
Jul12Moderate
Aug12Good
Sep12Good
Oct12Good
Nov10Good
Dec10Good
Location & terrain

Where is Nanaku?

Nanaku sits at 40.4°N, 141.3°E, 36 m above sea level, in Japan. The nearest listed city is Ninohe, 13 km away.

Topography around Nanaku

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

Within 3 km, the terrain around Nanaku has significant variations in elevation — a maximum elevation change of 528 m around an average of 123 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 770 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,118 m.

The land around Nanaku is covered by trees (83%) within 3 km, trees (87%) within 16 km, and trees (65%) and water (25%) within 80 km.

3 km
528 m
16 km
770 m
80 km
2,118 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Ninohe 13 km · Hakurōmachi 14 km · Hachinohe 22 km · Towada 25 km · Hitokawame 30 km · Ōno 33 km · Misawa 33 km · Toyota 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 Nanaku (40.4009°, 141.2727°, elevation 36 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).