Rokugō weather in May

In May, Rokugō sees average daytime highs of 19°C and overnight lows near 10°C, with 121 mm of rain across 13.5 wet days and about 14.1 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 21°C by the end. The sky is clear or mostly clear about 25% 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 Rokugō's 3rd-clearest and 7th-windiest month. For the whole year in context, see Rokugō's year-round climate.

Daytime high
19°
5th warmest
Overnight low
10°
8th coldest
Rainfall
121 mm
13.5 wet days
Daylight
14 h 12 min
4:29 AM – 6:39 PM
Cloud cover
67%
3rd clearest
Wind
9 km/h
7th windiest
Solar energy
5.31 kWh/m²
Travel score
5.5
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 21°C by the end.

A typical May day in Rokugō 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 14°C and 23°C. Set against its neighbours, May runs about 5°C warmer than April and about 4°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1177
2178
3178
4178
5178
6188
7188
8189
9189
10189
11189
12189
13189
141810
151910
161910
171910
181910
191910
201911
212011
222011
232011
242011
252011
262011
272012
282112
292112
302112
312112

How May really feels in Rokugō

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.

Rokugō weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°11021.121.69.50.0
Feb / -5°90171710.50.0
Mar / -1°11517.912.111.70.7
Apr13° / 11215.22.3133.3
May19° / 10°12113.5014.15.5
Jun23° / 15°13112.8014.76.0
Jul26° / 19°20617014.55.4
Aug27° / 20°17316.2013.55.4
Sep24° / 16°15214.2012.35.8
Oct17° / 14114.10115.0
Nov11° / 12917.63.59.82.1
Dec / -2°1302115.99.30.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24159
34159
44159
53961
63961
73961
83862
93763
103664
113664
123664
133664
143664
153664
163664
173664
183763
193763
203763
213862
223862
233961
243862
253862
263961
274060
284060
293961
303961
313961

Chance of precipitation in May

Any precipitation

Rokugō gets around 121 mm of rain over 13.5 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 44% and peaks near 47% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
147
247
346
446
546
646
746
847
947
1047
1147
1247
1346
1446
1546
1646
1745
1845
1944
2044
2143
2242
2341
2440
2540
2639
2738
2838
2938
3037
3137

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 87% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19640
29640
39640
49640
59640
69550
79550
89550
99550
109460
119460
129460
139370
149370
159280
169190
1790100
1889110
1987121
2086131
2184151
2283161
2381181
2480191
2577212
2676222
2774242
2871263
2969283
3067303
3164324

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 4:46 AM to 4:19 AM, and sunset from 6:24 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.64:466:24
213.74:456:25
313.74:436:26
413.74:426:27
513.84:416:28
613.84:406:29
713.94:396:30
813.94:386:31
913.94:366:32
1014.04:356:33
1114.04:346:34
1214.04:336:35
1314.14:326:36
1414.14:316:37
1514.14:306:38
1614.24:296:39
1714.24:286:40
1814.24:286:41
1914.24:276:42
2014.34:266:42
2114.34:256:43
2214.34:246:44
2314.44:246:45
2414.44:236:46
2514.44:226:47
2614.44:226:48
2714.54:216:48
2814.54:206:49
2914.54:206:50
3014.54:196:51
3114.54:196:52

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.31 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.69 kWh/m² to a high of 5.31 kWh/m² in May across the year — May's 5.31 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.4Bright
225.4Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in May

Hazard calendar for Rokugō

In seasonPeak

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

Rokugō 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 Rokugō?

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

5.5
Sightseeing
3rd-best month of the year
2.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Rokugō for sightseeing.

What to pack for Rokugō in May

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

In May, Rokugō sees daytime highs around 19°C and nights near 10°C. Worth packing: rain gear and sun protection. About 14 days see rain.

rain gearsun protection

Sea temperature near Rokugō 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 58 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 Rokugō 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 Rokugō peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 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 8Jan 11UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar3Moderate
Apr6High
May8Very high
Jun8Very high
Jul6High
Aug9Very high
Sep7High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Rokugō 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 Rokugō is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 149 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun15Moderate
Jul13Moderate
Aug11Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Rokugō?

Rokugō sits at 39.4°N, 140.6°E, 59 m above sea level, in Japan. The nearest listed city is Daisen, 6.0 km away.

Topography around Rokugō

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

Within 3 km, the terrain around Rokugō has only modest variations in elevation — a maximum elevation change of 100 m around an average of 50 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,036 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,210 m.

The land around Rokugō is covered by cropland (76%) within 3 km, trees (52%) and cropland (37%) within 16 km, and trees (72%) within 80 km.

3 km
100 m
16 km
1,036 m
80 km
2,210 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Daisen 6.0 km · Ōmagari 7.0 km · Yokote 11 km · Yuzawa 28 km · Semboku 37 km · Yurihonjō 42 km · Shizukuishi 48 km · Hanamaki 49 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 Rokugō (39.4167°, 140.55°, elevation 59 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).