Nikaho weather in May

In May, Nikaho sees average daytime highs of 18°C and overnight lows near 11°C, with 123 mm of rain across 13.9 wet days and about 14.1 hours of daylight. It is the 5th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 20°C by the end. The sky is clear or mostly clear about 26% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 30 min by month's end. Set against the rest of the year, May is Nikaho's 3rd-clearest and 8th-windiest month. For the whole year in context, see Nikaho's year-round climate.

Daytime high
18°
5th warmest
Overnight low
11°
7th coldest
Rainfall
123 mm
13.9 wet days
Daylight
14 h 06 min
4:32 AM – 6:41 PM
Cloud cover
66%
3rd clearest
Wind
10 km/h
8th windiest
Solar energy
5.51 kWh/m²
Travel score
5.3
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 16°C in the first days to 20°C by the end.

A typical May day in Nikaho reaches about 18°C in the afternoon and slips back to 11°C overnight — a 7°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 6°C warmer than April and about 4°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1169
2169
3169
4179
5179
61710
71710
81710
91710
101710
111710
121811
131811
141811
151811
161811
171811
181911
191912
201912
211912
221912
231912
242012
252013
262013
272013
282013
292013
302113
312114

How May really feels in Nikaho

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.

Nikaho weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°15924.822.69.60.0
Feb / -1°11720.81810.50.0
Mar / 12819.71111.70.6
Apr13° / 114151.7133.1
May18° / 11°12313.9014.15.3
Jun22° / 16°13713014.76.0
Jul26° / 20°22417.7014.55.4
Aug28° / 22°20416.6013.55.2
Sep24° / 18°18016012.35.6
Oct18° / 12°17115.90114.9
Nov11° / 17319.82.89.82.2
Dec / 18424.115.29.30.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% 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 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24258
34258
44159
54159
64060
74060
83961
93961
103862
113961
123961
133961
143961
153961
164060
174060
184060
194060
204159
214159
224258
234159
244159
254258
264258
274258
284258
294357
304258
314258

Chance of precipitation in May

Any precipitation

Nikaho gets around 123 mm of rain over 13.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 45% and peaks near 48% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
147
247
347
447
547
647
747
848
948
1048
1148
1248
1347
1447
1547
1646
1746
1846
1945
2044
2144
2243
2342
2442
2541
2640
2740
2839
2939
3038
3138

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 82% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19730
29640
39640
49550
59550
69550
79460
89460
99370
109370
119280
129190
1390100
1489110
1587121
1686131
1785141
1884151
1982171
2081181
2178202
2277212
2374233
2472253
2571263
2668284
2766304
2864315
2961336
3058357
3155378

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 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 30 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 4:49 AM to 4:22 AM, and sunset from 6:26 PM to 6:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.64:496:26
213.74:476:27
313.74:466:28
413.74:456:29
513.84:446:30
613.84:436:31
713.84:416:32
813.94:406:33
913.94:396:34
1014.04:386:35
1114.04:376:36
1214.04:366:37
1314.14:356:38
1414.14:346:39
1514.14:336:40
1614.14:326:41
1714.24:316:42
1814.24:306:43
1914.24:306:44
2014.34:296:44
2114.34:286:45
2214.34:276:46
2314.34:266:47
2414.44:266:48
2514.44:256:49
2614.44:246:50
2714.44:246:50
2814.54:236:51
2914.54:236:52
3014.54:226:53
3114.54:226:54

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.

For context, solar energy here swings from a low near 1.62 kWh/m² to a high of 5.52 kWh/m² in June across the year — May's 5.51 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
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
155.4Bright
165.4Bright
175.5Bright
185.5Bright
195.5Bright
205.6Bright
215.6Bright
225.7Bright
235.7Bright
245.7Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in May

Hazard calendar for Nikaho

In seasonPeak

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

Nikaho 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 Nikaho?

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

5.3
Sightseeing
4th-best month of the year
2.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Nikaho for sightseeing.

What to pack for Nikaho in May

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

In May, Nikaho sees daytime highs around 18°C and nights near 11°C. Worth packing: rain gear and sun protection. About 14 days see rain.

rain gearsun protection

Sea temperature near Nikaho in May

The nearest coast averages about 14°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 13 km away) is warmest in August at about 26°C and coldest in March near 9°C.

It's comfortable for a long swim from Jun 27 to Oct 24 — about 3.9 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb10Bracing
Mar9Bracing
Apr10Bracing
May14Bracing
Jun19Cool
Jul22Refreshing
Aug26Warm
Sep25Warm
Oct21Refreshing
Nov18Cool
Dec14Bracing

UV index in Nikaho 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 Nikaho peaks around August 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 18UV 9Jan 10UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar3Moderate
Apr6High
May8Very high
Jun7Very high
Jul6High
Aug9Very high
Sep7High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Nikaho 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 Nikaho is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 159 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun15Moderate
Jul13Moderate
Aug11Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Nikaho?

Nikaho sits at 39.3°N, 139.9°E, 47 m above sea level, in Japan. The nearest listed city is Yurihonjō, 17 km away.

Topography around Nikaho

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

Within 3 km, the terrain around Nikaho has only modest variations in elevation — a maximum elevation change of 127 m around an average of 20 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,122 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,210 m.

The land around Nikaho is covered by trees (30%), cropland (27%) and water (25%) within 3 km, water (52%) and trees (36%) within 16 km, and trees (50%) and water (38%) within 80 km.

3 km
127 m
16 km
1,122 m
80 km
2,210 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Yurihonjō 17 km · Sakata 40 km · Shonai 47 km · Yuzawa 50 km · Ōmagari 51 km · Daisen 51 km · Akita 52 km · Yokote 53 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 Nikaho (39.2708°, 139.9395°, elevation 47 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).