Hiratachō weather in May

In May, Hiratachō sees average daytime highs of 19°C and overnight lows near 16°C, with 121 mm of rain across 9.8 wet days and about 13.8 hours of daylight. It is the 6th-warmest and 8th-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 34% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of May to 14 h 12 min by month's end. Set against the rest of the year, May is Hiratachō's 4th-clearest and 9th-windiest month. For the whole year in context, see Hiratachō's year-round climate.

Daytime high
19°
6th warmest
Overnight low
16°
7th coldest
Rainfall
121 mm
9.8 wet days
Daylight
13 h 54 min
5:09 AM – 7:01 PM
Cloud cover
59%
4th clearest
Wind
18 km/h
9th windiest
Solar energy
5.83 kWh/m²
Travel score
6.0
out of 10

Hiratachō is human settlement in Japan.

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 Hiratachō reaches about 19°C in the afternoon and slips back to 16°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 21°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11714
21714
31714
41714
51714
61814
71814
81815
91815
101815
111815
121815
131815
141815
151815
161916
171916
181916
191916
201916
211916
221916
231916
241917
252017
262017
272017
282017
292017
302017
312017

Hiratachō weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 15720.659.91.1
Feb / 11916.43.910.71.2
Mar11° / 12914.61.111.72.4
Apr15° / 11°10710.2012.94.4
May19° / 16°1219.8013.86.0
Jun22° / 20°15511.1014.36.2
Jul26° / 24°19713.3014.16.1
Aug27° / 25°13211.7013.36.2
Sep25° / 22°17812.9012.26.3
Oct20° / 17°10811011.16.2
Nov16° / 13°11213.7010.14.4
Dec11° / 161202.89.72.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% 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 53%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
34951
44852
54852
64753
74654
84753
94753
104654
114753
124654
134654
144753
154654
164654
174753
184753
194654
204654
214654
224654
234654
244654
254654
264654
274753
284753
294555
304555
314555

Chance of precipitation in May

Any precipitation

Hiratachō gets around 121 mm of rain over 9.8 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 31% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
331
431
531
631
732
832
932
1033
1133
1233
1333
1433
1532
1632
1732
1832
1931
2031
2131
2231
2331
2430
2530
2630
2730
2830
2930
3030
3130

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 42% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1722530
2712630
3682840
4672940
5643150
6633250
7613450
8593560
9583660
10553870
11533980
12524080
13494190
144743100
154544110
164345120
174046140
183847150
193647160
203448180
213148201
222949211
232748231
242548251
252348281
262147302
272046332
281844352
291742383
301640404
311439435

Wind in May

Winds average 18 km/h in May.

Across May, daily wind ranges from about 16 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 24 min at the start of May to 14 h 12 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 5:24 AM to 5:00 AM, and sunset from 6:48 PM to 7:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:246:48
213.45:226:49
313.55:216:50
413.55:206:51
513.55:196:52
613.65:186:53
713.65:176:53
813.65:166:54
913.75:156:55
1013.75:146:56
1113.75:136:57
1213.85:126:58
1313.85:126:58
1413.85:116:59
1513.85:107:00
1613.95:097:01
1713.95:087:02
1813.95:087:02
1913.95:077:03
2014.05:067:04
2114.05:067:05
2214.05:057:06
2314.05:047:06
2414.15:047:07
2514.15:037:08
2614.15:037:08
2714.15:027:09
2814.15:027:10
2914.25:017:11
3014.25:017:11
3114.25:007:12

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.83 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.02 kWh/m² to a high of 5.83 kWh/m² in May across the year — May's 5.83 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in May

Hazard calendar for Hiratachō

In seasonPeak

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

Hiratachō 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 Hiratachō?

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

6.0
Sightseeing
6th-best month of the year
2.4
Beach & pool
6th-best month of the year

May is a reasonable time to visit Hiratachō for sightseeing.

What to pack for Hiratachō in May

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

In May, Hiratachō sees daytime highs around 19°C and nights near 16°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

Sea temperature near Hiratachō in May

The nearest coast averages about 17°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 19 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 12 to Nov 15 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul24Warm
Aug27Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Hiratachō 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 Hiratachō peaks around July 19 at about 10 (extreme) — 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 highVery highModerateJul 19UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Hiratachō 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 Hiratachō is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1222 µg/m³Oct 1310 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb16Moderate
Mar21Moderate
Apr22Moderate
May20Moderate
Jun17Moderate
Jul13Moderate
Aug12Good
Sep11Good
Oct10Good
Nov12Good
Dec11Good
Location & terrain

Where is Hiratachō?

Hiratachō sits at 35.4°N, 132.8°E, -1 m above sea level, in Japan. The nearest listed city is Izumo, 9.0 km away.

Topography around Hiratachō

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

Within 3 km, the terrain around Hiratachō has significant variations in elevation — a maximum elevation change of 402 m around an average of 25 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 527 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,689 m.

The land around Hiratachō is covered by cropland (39%) and trees (31%) within 3 km, trees (42%) and water (38%) within 16 km, and trees (48%) and water (48%) within 80 km.

3 km
402 m
16 km
527 m
80 km
1,689 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Izumo 9.0 km · Matsue 22 km · Unnan 22 km · Yasugichō 39 km · Ōdachō-ōda 39 km · Sakaiminato 39 km · Yonago 47 km · Mikuriya 62 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 Hiratachō (35.4333°, 132.8167°, elevation -1 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).