Sayama weather in June

In June, Sayama sees average daytime highs of 27°C and overnight lows near 20°C, with 199 mm of rain across 13.6 wet days and about 14.3 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 28°C by the end. The sky is clear or mostly clear about 13% of the time in June, and the air most often feels humid.

Daylight stretches from about 14 h 06 min at the start of June to 14 h 18 min by month's end. Set against the rest of the year, June is Sayama's 12th-clearest and 12th-windiest month. For the whole year in context, see Sayama's year-round climate.

Daytime high
27°
4th warmest
Overnight low
20°
9th coldest
Rainfall
199 mm
13.6 wet days
Daylight
14 h 18 min
4:49 AM – 7:07 PM
Cloud cover
78%
12th clearest
Wind
7 km/h
12th windiest
Solar energy
4.92 kWh/m²
Travel score
5.5
out of 10

Sayama is city in Osaka Prefecture, Japan.

Density
4,927/km²
people per km²
Founded
1987

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 26°C in the first days to 28°C by the end.

A typical June day in Sayama reaches about 27°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 30°C. Set against its neighbours, June runs about 3°C warmer than May and about 4°C cooler than July.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12617
22617
32617
42618
52618
62618
72618
82618
92718
102719
112719
122719
132719
142719
152719
162720
172720
182720
192720
202720
212720
222721
232821
242821
252821
262821
272822
282822
292822
302822

How June really feels in Sayama

Once humidity and wind are folded in, June 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

June sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Sayama weather by month

How June compares with the rest of the year at a glance. June is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 648.11101.9
Feb10° / 698.61.110.72.3
Mar14° / 11211.60.111.73.8
Apr19° / 10°11410.4012.86.0
May24° / 15°13210.4013.86.7
Jun27° / 20°19913.6014.35.5
Jul31° / 24°17213.8014.14.1
Aug33° / 25°10010.4013.33.5
Sep29° / 21°15811.8012.25.3
Oct23° / 14°15610011.16.8
Nov17° / 848010.25.7
Dec12° / 688.40.29.73.2

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in June, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 10% of June, with mostly cloudy or overcast conditions the remaining 77%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13367
23268
33169
43169
53070
62872
72872
82773
92674
102674
112575
122377
132278
142278
152179
161981
171981
181981
191882
201783
211783
221882
231882
241882
251882
261882
271882
282080
292179
302179

Chance of precipitation in June

Any precipitation

Sayama gets around 199 mm of rain over 13.6 wet days in June, the wettest month. 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 55% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
132
232
333
434
535
636
737
839
940
1041
1143
1244
1346
1448
1549
1650
1751
1852
1952
2053
2153
2254
2354
2454
2555
2655
2755
2855
2955
3055

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

Most of June feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, June lands in the humid band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1284025700
2263926810
3243828910
42237291110
52036311210
61835321320
71733331520
81531341630
91430351830
101228362040
111126372250
121024372550
13822372760
14720362970
15618363180
165173533100
175153435110
184143336130
193133138150
203123039170
212102940190
22292640220
23182540250
24172340280
25162140310
26161939341
27151739381
28141638411
29041438441
30031337461

Wind in June

Winds average 7 km/h in June, the calmest month.

Across June, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 06 min at the start of June to 14 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:51 AM to 4:52 AM, and sunset from 6:59 PM to 7:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.14:516:59
214.24:517:00
314.24:517:01
414.24:507:01
514.24:507:02
614.24:507:02
714.24:507:03
814.24:497:03
914.24:497:04
1014.34:497:04
1114.34:497:05
1214.34:497:05
1314.34:497:06
1414.34:497:06
1514.34:497:07
1614.34:497:07
1714.34:497:07
1814.34:497:08
1914.34:497:08
2014.34:507:08
2114.34:507:08
2214.34:507:09
2314.34:507:09
2414.34:507:09
2514.34:517:09
2614.34:517:09
2714.34:517:09
2814.34:517:10
2914.34:527:10
3014.34:527:10

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 4.92 kWh/m².

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 5.49 kWh/m² in May across the year — June's 4.92 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.3Bright
65.2Bright
75.2Bright
85.2Bright
95.1Bright
105.1Bright
115.0Bright
125.0Bright
135.0Bright
144.9Bright
154.9Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in June

Hazard calendar for Sayama

In seasonPeak

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

Sayama 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 June a good time to visit Sayama?

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

5.5
Sightseeing
5th-best month of the year
5.7
Beach & pool
4th-best month of the year

June is a reasonable time to visit Sayama for sightseeing.

What to pack for Sayama in June

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

In June, Sayama sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.

light clothesrain gearsun protection

Sea temperature near Sayama in June

The nearest coast averages about 21°C in June — 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 27°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 6 to Nov 11 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Sayama in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

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

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJun 23UV 10Dec 23UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Sayama in June

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.

Air quality in Sayama is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1423 µg/m³Oct 1713 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun19Moderate
Jul17Moderate
Aug18Moderate
Sep14Moderate
Oct13Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Sayama?

Sayama sits at 34.5°N, 135.6°E, 61 m above sea level, in Japan. The nearest listed city is Tondabayashichō, 4.0 km away.

Topography around Sayama

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

Within 3 km, the terrain around Sayama has only modest variations in elevation — a maximum elevation change of 98 m around an average of 79 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,142 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,879 m.

The land around Sayama is covered by artificial surfaces (67%) within 3 km, artificial surfaces (51%) and trees (37%) within 16 km, and trees (65%) within 80 km.

3 km
98 m
16 km
1,142 m
80 km
1,879 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Tondabayashichō 4.0 km · Habikino 5.0 km · Matsubara 6.0 km · Fujiidera 6.0 km · Kanō 7.0 km · Kawachi-Nagano 9.0 km · Kashihara 9.0 km · Sakai 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 Sayama (34.5168°, 135.563°, elevation 61 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).