Shisui weather in May

In May, Shisui sees average daytime highs of 22°C and overnight lows near 15°C, with 128 mm of rain across 11.6 wet days and about 13.9 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 24°C by the end. The sky is clear or mostly clear about 24% 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 Shisui's 10th-clearest and 3rd-windiest month. For the whole year in context, see Shisui's year-round climate.

Daytime high
22°
5th warmest
Overnight low
15°
7th coldest
Rainfall
128 mm
11.6 wet days
Daylight
13 h 54 min
4:39 AM – 6:32 PM
Cloud cover
69%
10th clearest
Wind
12 km/h
3rd windiest
Solar energy
5.31 kWh/m²
Travel score
6.3
out of 10

Shisui is town in Inba district, Chiba prefecture, Japan.

Density
1,091/km²
people per km²
Founded
1889

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 21°C in the first days to 24°C by the end.

A typical May day in Shisui reaches about 22°C in the afternoon and slips back to 15°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°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)
12013
22113
32113
42114
52114
62114
72114
82114
92114
102214
112215
122215
132215
142215
152215
162215
172215
182215
192316
202316
212316
222316
232316
242316
252316
262317
272317
282417
292417
302417
312417

How May really feels in Shisui

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.

Shisui 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 / 757.60.89.92.1
Feb10° / 718.41.110.62.3
Mar13° / 12512.80.511.73.5
Apr18° / 10°11312.6012.95.3
May22° / 15°12811.6013.96.3
Jun25° / 19°15913.7014.45.8
Jul29° / 23°15013.8014.24.9
Aug30° / 24°11411.9013.44.5
Sep27° / 21°17514.3012.25.6
Oct21° / 16°20713011.16.1
Nov16° / 10°10210.4010.15.2
Dec12° / 688.40.19.63.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34258
44258
54060
64060
73961
83862
93763
103664
113565
123565
133565
143466
153466
163466
173466
183466
193466
203565
213565
223466
233466
243565
253565
263466
273466
283466
293268
303268
313268

Chance of precipitation in May

Any precipitation

Shisui gets around 128 mm of rain over 11.6 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 37% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
336
436
536
636
736
836
936
1036
1137
1237
1337
1437
1538
1638
1738
1838
1938
2038
2138
2238
2338
2438
2538
2638
2738
2837
2937
3037
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 39% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1652771
2642871
3622981
4603091
5593191
65732101
75632111
85433121
95234122
105035132
114836142
124637142
134539152
144340152
154141163
163941173
173742183
183543193
193343203
203143224
212944234
222843254
232643264
242543285
252342305
262241316
272140336
281939357
291838368
301737379
3115363810

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2811calm
2911calm
3011calm
3111calm

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 4:53 AM to 4:30 AM, and sunset from 6:19 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.44:536:19
213.54:526:20
313.54:516:21
413.54:506:22
513.64:496:22
613.64:486:23
713.64:476:24
813.74:466:25
913.74:456:26
1013.74:446:27
1113.74:436:27
1213.84:426:28
1313.84:416:29
1413.84:406:30
1513.94:406:31
1613.94:396:32
1713.94:386:32
1813.94:376:33
1914.04:366:34
2014.04:366:35
2114.04:356:36
2214.04:346:36
2314.14:346:37
2414.14:336:38
2514.14:336:39
2614.14:326:39
2714.14:326:40
2814.24:316:41
2914.24:316:41
3014.24:306:42
3114.24:306:43

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 2.32 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
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.3Bright
315.3Bright
Planning a trip in May

Hazard calendar for Shisui

In seasonPeak

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

Shisui 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 Shisui?

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

6.3
Sightseeing
1st-best month of the year
4.5
Beach & pool
5th-best month of the year

May is a reasonable time to visit Shisui for sightseeing.

What to pack for Shisui in May

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

In May, Shisui sees daytime highs around 22°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

Sea temperature near Shisui in May

The nearest coast averages about 19°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 34 km away) is warmest in August at about 25°C and coldest in February near 15°C.

It's comfortable for a long swim from Jun 5 to Nov 22 — about 5.6 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Bracing
Mar15Cool
Apr16Cool
May19Cool
Jun21Refreshing
Jul23Refreshing
Aug25Warm
Sep25Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Shisui 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 Shisui peaks around August 12 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 highModerateAug 12UV 10Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug10Extreme
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Shisui 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 Shisui is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2425 µg/m³Dec 1914 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar25Moderate
Apr25Moderate
May24Moderate
Jun19Moderate
Jul16Moderate
Aug15Moderate
Sep15Moderate
Oct16Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Shisui?

Shisui sits at 35.7°N, 140.3°E, 40 m above sea level, in Japan. The nearest listed city is Sakura, 3.0 km away.

Topography around Shisui

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

Within 3 km, the terrain around Shisui has only modest variations in elevation — a maximum elevation change of 56 m around an average of 25 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 84 m; within 80 km, large variations in elevation — a maximum elevation change of 840 m.

The land around Shisui is covered by trees (46%), artificial surfaces (25%) and cropland (24%) within 3 km, trees (43%), artificial surfaces (26%) and cropland (24%) within 16 km, and water (35%), trees (24%) and artificial surfaces (23%) within 80 km.

3 km
56 m
16 km
84 m
80 km
840 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Sakura 3.0 km · Narita 9.0 km · Yachimata 9.0 km · Ryōgoku 9.0 km · Yotsukaidō 12 km · Yachiyo 13 km · Ajiki 13 km · Inzai 16 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 Shisui (35.7167°, 140.2667°, elevation 40 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).