Kashiwa weather in May

In May, Kashiwa sees average daytime highs of 22°C and overnight lows near 15°C, with 131 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 20°C in the first days to 23°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 Kashiwa's 10th-clearest and 3rd-windiest month. For the whole year in context, see Kashiwa's year-round climate.

Daytime high
22°
5th warmest
Overnight low
15°
7th coldest
Rainfall
131 mm
11.6 wet days
Daylight
13 h 54 min
4:40 AM – 6:33 PM
Cloud cover
68%
10th clearest
Wind
14 km/h
3rd windiest
Solar energy
5.16 kWh/m²
Travel score
6.2
out of 10

Kashiwa is city in Chiba Prefecture, Japan.

Density
3,778/km²
people per km²
Founded
1954

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 20°C in the first days to 23°C by the end.

A typical May day in Kashiwa 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 25°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
22013
32014
42014
52114
62114
72114
82114
92114
102115
112115
122115
132115
142215
152215
162215
172215
182216
192216
202216
212216
222316
232316
242316
252316
262317
272317
282317
292317
302317
312317

How May really feels in Kashiwa

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.

Kashiwa 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 / 706.80.89.82.0
Feb10° / 667.91.510.62.2
Mar13° / 12012.20.711.73.4
Apr17° / 10°11411.9012.95.3
May22° / 15°13111.6013.96.2
Jun25° / 19°16113.7014.45.8
Jul28° / 23°15313.7014.25.1
Aug30° / 24°11211.8013.44.8
Sep26° / 21°17514.2012.25.7
Oct21° / 15°20712.9011.16.1
Nov16° / 10°9810.1010.15.1
Dec11° / 637.70.19.63.2

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 13% of May, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34357
44159
54159
64060
73862
83763
93763
103664
113664
123565
133466
143466
153565
163565
173466
183664
193664
203664
213565
223763
233664
243664
253763
263763
273664
283664
293565
303367
313367

Chance of precipitation in May

Any precipitation

Kashiwa gets around 131 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 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
235
335
435
535
635
735
836
936
1036
1136
1237
1337
1438
1538
1638
1739
1839
1939
2039
2138
2238
2338
2438
2537
2637
2736
2836
2936
3036
3136

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 (%)
1642871
2622981
3613081
4603091
55831101
65632111
75532121
85233132
95034142
104934142
114835152
124636162
134437172
144238182
154039193
163840203
173640213
183441223
193241233
203042253
212842264
222742284
232541294
242441315
252240325
262139346
272038356
281937377
291836387
301735408
311634419

Wind in May

Winds average 14 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light 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 4:54 AM to 4:31 AM, and sunset from 6:20 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.44:546:20
213.54:536:21
313.54:526:22
413.54:516:23
513.64:506:24
613.64:496:25
713.64:486:26
813.74:476:26
913.74:466:27
1013.74:456:28
1113.84:446:29
1213.84:436:30
1313.84:426:31
1413.84:416:31
1513.94:406:32
1613.94:406:33
1713.94:396:34
1813.94:386:35
1914.04:376:35
2014.04:376:36
2114.04:366:37
2214.04:356:38
2314.14:356:39
2414.14:346:39
2514.14:336:40
2614.14:336:41
2714.24:326:42
2814.24:326:42
2914.24:316:43
3014.24:316:44
3114.24:316:44

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.16 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 5.16 kWh/m² in May across the year — May's 5.16 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
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.1Bright
Planning a trip in May

Hazard calendar for Kashiwa

In seasonPeak

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

Kashiwa 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 Kashiwa?

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

6.2
Sightseeing
1st-best month of the year
4.2
Beach & pool
5th-best month of the year

May is a reasonable time to visit Kashiwa for sightseeing.

What to pack for Kashiwa in May

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

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

rain gearsun protection

Sea temperature near Kashiwa 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 28 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 7 to Nov 3 — about 4.9 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Kashiwa 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 Kashiwa peaks around July 21 at about 10 (very high) — 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 highModerateJul 21UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Kashiwa 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 Kashiwa 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 Kashiwa?

Kashiwa sits at 35.9°N, 140.0°E, 24 m above sea level, in Japan. The nearest listed city is Abiko, 4.0 km away.

Topography around Kashiwa

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

Within 3 km, the terrain around Kashiwa has only modest variations in elevation — a maximum elevation change of 46 m around an average of 18 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 51 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,431 m.

The land around Kashiwa is covered by artificial surfaces (73%) within 3 km, artificial surfaces (50%), cropland (21%) and trees (20%) within 16 km, and trees (32%) and artificial surfaces (28%) within 80 km.

3 km
46 m
16 km
51 m
80 km
1,431 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Abiko 4.0 km · Nagareyama 7.0 km · Minaminagareyama 8.0 km · Moriya 8.0 km · Misato, Saitama 9.0 km · Toride 10 km · Kamagaya 11 km · Shiroi 11 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 Kashiwa (35.8622°, 139.9773°, elevation 24 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).