Shioiri weather in May

In May, Shioiri sees average daytime highs of 22°C and overnight lows near 16°C, with 130 mm of rain across 10.3 wet days and about 13.8 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 23°C by the end. The sky is clear or mostly clear about 31% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of May to 14 h 06 min by month's end. Set against the rest of the year, May is Shioiri's 10th-clearest and 9th-windiest month. For the whole year in context, see Shioiri's year-round climate.

Daytime high
22°
5th warmest
Overnight low
16°
7th coldest
Rainfall
130 mm
10.3 wet days
Daylight
13 h 48 min
5:08 AM – 6:54 PM
Cloud cover
62%
10th clearest
Wind
8 km/h
9th windiest
Solar energy
5.54 kWh/m²
Travel score
6.5
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 23°C by the end.

A typical May day in Shioiri reaches about 22°C in the afternoon and slips back to 16°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 24°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12014
22014
32014
42015
52115
62115
72115
82115
92115
102115
112116
122116
132116
142216
152216
162216
172216
182216
192216
202217
212217
222217
232317
242317
252317
262317
272317
282318
292318
302318
312318

How May really feels in Shioiri

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.

Shioiri weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 599.91.6101.9
Feb10° / 649.51.510.72.2
Mar13° / 10211.50.311.73.5
Apr18° / 12°11010.6012.85.6
May22° / 16°13010.3013.86.5
Jun25° / 20°19113014.26.0
Jul29° / 24°17712.50145.2
Aug30° / 25°1069.7013.35.0
Sep27° / 22°16811.6012.26.1
Oct22° / 17°1349.5011.16.9
Nov17° / 11°688.1010.25.5
Dec12° / 6710.119.83.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% 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 56%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
34852
44951
54852
64753
74753
84654
94555
104456
114456
124555
134456
144456
154555
164456
174555
184555
194555
204456
214456
224456
234456
244456
254456
264258
274258
284159
294060
303961
313862

Chance of precipitation in May

Any precipitation

Shioiri gets around 130 mm of rain over 10.3 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 33% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
132
232
332
432
532
632
733
833
934
1034
1134
1234
1334
1434
1534
1633
1733
1833
1933
2032
2132
2232
2332
2432
2532
2632
2732
2832
2932
3033
3133

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 38% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16127102
25928112
35829112
45630122
55531122
65332123
75232133
85133133
94934143
104834144
114635154
124536154
134337164
144238174
154039174
163939184
173740194
183540214
193440224
203240234
213040254
222940275
232739285
242639306
252438326
262337347
272136367
281934388
291833399
3017314111
3115304312

Wind in May

Winds average 8 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
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 18 min at the start of May to 14 h 06 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 5:21 AM to 4:59 AM, and sunset from 6:42 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:216:42
213.45:206:43
313.45:196:44
413.45:186:45
513.55:176:45
613.55:166:46
713.55:156:47
813.65:146:48
913.65:136:49
1013.65:136:49
1113.65:126:50
1213.75:116:51
1313.75:106:52
1413.75:096:52
1513.75:086:53
1613.85:086:54
1713.85:076:55
1813.85:066:56
1913.85:066:56
2013.95:056:57
2113.95:046:58
2213.95:046:58
2313.95:036:59
2414.05:027:00
2514.05:027:01
2614.05:017:01
2714.05:017:02
2814.05:017:03
2914.15:007:03
3014.15:007:04
3114.14:597:05

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.54 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 5.54 kWh/m² in May across the year — May's 5.54 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
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.4Bright
Planning a trip in May

Hazard calendar for Shioiri

In seasonPeak

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

Shioiri 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 Shioiri?

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

6.5
Sightseeing
2nd-best month of the year
4.4
Beach & pool
6th-best month of the year

May is a reasonable time to visit Shioiri for sightseeing.

What to pack for Shioiri in May

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

In May, Shioiri sees daytime highs around 22°C and nights near 16°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

Sea temperature near Shioiri in May

The nearest coast averages about 18°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 21 km away) is warmest in August at about 28°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 3 to Nov 12 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug28Warm
Sep27Warm
Oct24Refreshing
Nov20Cool
Dec16Cool

UV index in Shioiri in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Shioiri peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 23UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May9Very high
Jun11Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Shioiri 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 Shioiri is worst in April — around 24 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1324 µg/m³Dec 1414 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar23Moderate
Apr24Moderate
May22Moderate
Jun20Moderate
Jul17Moderate
Aug17Moderate
Sep16Moderate
Oct14Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Shioiri?

Shioiri sits at 34.2°N, 133.9°E, 150 m above sea level, in Japan. The nearest listed city is Zentsujichó, 10 km away.

Topography around Shioiri

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

Within 3 km, the terrain around Shioiri has significant variations in elevation — a maximum elevation change of 463 m around an average of 174 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,039 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,914 m.

The land around Shioiri is covered by trees (64%) within 3 km, trees (67%) within 16 km, and trees (57%) and water (30%) within 80 km.

3 km
463 m
16 km
1,039 m
80 km
1,914 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Zentsujichó 10 km · Takinomiya 12 km · Ikedachō 15 km · Marugame 15 km · Tadotsu 16 km · Utazu 16 km · Mitoyo 17 km · Sakaidechō 19 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 Shioiri (34.1561°, 133.8515°, elevation 150 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).