Gohyakkoku weather in May

In May, Gohyakkoku sees average daytime highs of 21°C and overnight lows near 13°C, with 156 mm of rain across 14.6 wet days and about 13.9 hours of daylight. It is the 5th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 22°C by the end. The sky is clear or mostly clear about 30% 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 Gohyakkoku's 5th-clearest and 7th-windiest month. For the whole year in context, see Gohyakkoku's year-round climate.

Daytime high
21°
5th warmest
Overnight low
13°
7th coldest
Rainfall
156 mm
14.6 wet days
Daylight
13 h 54 min
4:49 AM – 6:45 PM
Cloud cover
61%
5th clearest
Wind
8 km/h
7th windiest
Solar energy
5.68 kWh/m²
Travel score
5.8
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 19°C in the first days to 22°C by the end.

A typical May day in Gohyakkoku reaches about 21°C in the afternoon and slips back to 13°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 25°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
11910
21911
31911
41911
51911
61911
71911
82012
92012
102012
112012
122012
132012
142012
152013
162113
172113
182113
192113
202113
212114
222114
232114
242214
252214
262214
272214
282215
292215
302215
312215

How May really feels in Gohyakkoku

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.

Gohyakkoku weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°21022.917.99.80.0
Feb / -0°16419.114.610.60.1
Mar / 17918.98.811.71.5
Apr15° / 15014.51.312.94.2
May21° / 13°15614.6013.95.8
Jun24° / 18°20015.4014.55.7
Jul28° / 22°27318.6014.34.8
Aug29° / 23°17815.8013.44.8
Sep25° / 19°21115.6012.25.7
Oct19° / 13°18014.6011.15.5
Nov14° / 16916.81.2103.3
Dec / 2142210.89.50.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24852
34852
44951
54852
64852
74951
84852
94852
104753
114753
124654
134654
144654
154654
164654
174555
184555
194555
204555
214555
224555
234456
244357
254357
264258
274258
284258
294159
304060
314060

Chance of precipitation in May

Any precipitation

Gohyakkoku gets around 156 mm of rain over 14.6 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 46% and peaks near 50% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
144
244
344
445
545
646
746
847
948
1048
1149
1249
1350
1450
1550
1649
1749
1848
1948
2047
2146
2246
2345
2444
2544
2643
2742
2841
2941
3040
3140

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 72% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
191810
290910
3891010
4881110
5871210
6861310
7841420
8831520
9821620
10811720
11801730
12791830
13781930
14781930
15762040
16752140
17742240
18732250
19712351
20692461
21672661
22652771
23642871
24613081
25583291
26563491
275435101
285137111
294839121
304441141
314143151

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 7 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
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 5:04 AM to 4:39 AM, and sunset from 6:32 PM to 6:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:046:32
213.55:026:33
313.55:016:34
413.65:006:35
513.64:596:36
613.64:586:37
713.74:576:38
813.74:566:39
913.74:556:39
1013.84:546:40
1113.84:536:41
1213.84:526:42
1313.94:516:43
1413.94:506:44
1513.94:496:45
1613.94:496:45
1714.04:486:46
1814.04:476:47
1914.04:466:48
2014.14:456:49
2114.14:456:50
2214.14:446:50
2314.14:436:51
2414.24:436:52
2514.24:426:53
2614.24:426:53
2714.24:416:54
2814.24:416:55
2914.34:406:56
3014.34:406:56
3114.34:396:57

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.68 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.94 kWh/m² to a high of 5.68 kWh/m² in May across the year — May's 5.68 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
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.9Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in May

Hazard calendar for Gohyakkoku

In seasonPeak

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

Gohyakkoku 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 Gohyakkoku?

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

5.8
Sightseeing
1st-best month of the year
3.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Gohyakkoku for sightseeing.

What to pack for Gohyakkoku in May

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

In May, Gohyakkoku sees daytime highs around 21°C and nights near 13°C. Pack rain gear. Worth having: sun protection. About 15 days see rain.

rain gearsun protection

Sea temperature near Gohyakkoku in May

The nearest coast averages about 15°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 24 km away) is warmest in August at about 27°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 18 to Nov 3 — about 4.6 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar10Bracing
Apr11Bracing
May15Cool
Jun20Cool
Jul24Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Gohyakkoku 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 Gohyakkoku peaks around August 13 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 highModerateAug 13UV 10Dec 20UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Gohyakkoku 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 Gohyakkoku 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 1621 µg/m³Dec 139 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun18Moderate
Jul14Moderate
Aug12Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Gohyakkoku?

Gohyakkoku sits at 36.7°N, 137.3°E, 70 m above sea level, in Japan. The nearest listed city is Kamiichi, 6.0 km away.

Topography around Gohyakkoku

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

Within 3 km, the terrain around Gohyakkoku has only modest variations in elevation — a maximum elevation change of 124 m around an average of 68 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,371 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,123 m.

The land around Gohyakkoku is covered by cropland (68%) and artificial surfaces (23%) within 3 km, trees (44%), cropland (24%) and artificial surfaces (20%) within 16 km, and trees (61%) and water (27%) within 80 km.

3 km
124 m
16 km
1,371 m
80 km
3,123 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Kamiichi 6.0 km · Toyama 10 km · Namerikawa 11 km · Uozu 17 km · Yatsuomachi-higashikumisaka 20 km · Imizu 21 km · Nishishinminato 25 km · Takaoka 28 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 Gohyakkoku (36.6641°, 137.3167°, elevation 70 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).