Sasayama weather in July

In July, Sasayama sees average daytime highs of 29°C and overnight lows near 23°C, with 221 mm of rain across 16.6 wet days and about 14.1 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 31°C by the end. The sky is clear or mostly clear about 14% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 18 min at the start of July to 13 h 48 min by month's end. Set against the rest of the year, July is Sasayama's 11th-clearest and 9th-windiest month. For the whole year in context, see Sasayama's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
23°
11th coldest
Rainfall
221 mm
16.6 wet days
Daylight
14 h 06 min
5:00 AM – 7:09 PM
Cloud cover
74%
11th clearest
Wind
9 km/h
9th windiest
Solar energy
5 kWh/m²
Travel score
4.4
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 28°C in the first days to 31°C by the end.

A typical July day in Sasayama reaches about 29°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 33°C. Set against its neighbours, July runs about 4°C warmer than June and about 2°C cooler than August.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12721
22821
32821
42821
52822
62822
72822
82822
92822
102922
112922
122922
132922
142923
152923
162923
173023
183023
193023
203023
213023
223023
233023
243023
253124
263124
273124
283124
293124
303124
313124

How July really feels in Sasayama

Once humidity and wind are folded in, July averages 16 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
16
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Sasayama weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 5571.49.91.2
Feb / 648.11.810.71.6
Mar12° / 11211.70.511.73.2
Apr18° / 12510.9012.95.5
May22° / 14°14711.1013.86.4
Jun26° / 18°18614.1014.35.7
Jul29° / 23°22116.6014.14.4
Aug31° / 23°13413.9013.34.1
Sep27° / 20°19612.9012.25.8
Oct21° / 14°1549.2011.16.7
Nov16° / 787010.25.2
Dec10° / 6270.69.72.5

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 15% of July, with mostly cloudy or overcast conditions the remaining 71%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21882
31981
42080
52080
62080
72080
82179
92278
102377
112377
122476
132575
142575
152674
162872
172872
182971
193169
203268
213268
223565
233664
243763
253763
264060
274060
284159
294258
304357
314456

Chance of precipitation in July

Any precipitation

Sasayama gets around 221 mm of rain over 16.6 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 53% and peaks near 60% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
160
260
360
460
560
660
759
859
958
1057
1156
1255
1354
1453
1552
1651
1750
1850
1949
2049
2148
2248
2348
2448
2547
2647
2747
2847
2947
3047
3147

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 92% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
152035400
241834430
341734451
431533481
521433501
621332521
721132541
821031561
91931581
101930582
111830592
121729612
131728622
141628632
151627642
161526662
171525663
181524673
191423693
201422703
211421704
221420714
230419725
240318745
250317746
260316756
270315757
280314758
290214768
300214759
310213769

Wind in July

Winds average 9 km/h in July.

Across July, daily wind ranges from about 9 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
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 18 min at the start of July to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over July. Sunrise moves from 4:52 AM to 5:11 AM, and sunset from 7:12 PM to 6:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:527:12
214.34:537:12
314.34:537:12
414.34:547:12
514.34:547:12
614.34:557:12
714.34:557:12
814.34:567:12
914.34:567:11
1014.24:577:11
1114.24:577:11
1214.24:587:11
1314.24:597:10
1414.24:597:10
1514.25:007:10
1614.15:007:09
1714.15:017:09
1814.15:027:08
1914.15:027:08
2014.15:037:07
2114.05:047:07
2214.05:047:06
2314.05:057:05
2414.05:067:05
2514.05:077:04
2613.95:077:03
2713.95:087:03
2813.95:097:02
2913.95:097:01
3013.85:107:00
3113.85:116:59

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5 kWh/m².

For context, solar energy here swings from a low near 2.3 kWh/m² to a high of 5.48 kWh/m² in May across the year — July's 5 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.8Bright
114.8Bright
124.8Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.0Bright
185.1Bright
195.1Bright
205.2Bright
215.2Bright
225.2Bright
235.3Bright
245.3Bright
255.3Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in July

Hazard calendar for Sasayama

In seasonPeak

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

Sasayama 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 July a good time to visit Sasayama?

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

4.4
Sightseeing
7th-best month of the year
5.7
Beach & pool
3rd-best month of the year

July is a reasonable time to visit Sasayama for sightseeing.

What to pack for Sasayama in July

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

In July, Sasayama sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Sasayama in July

The nearest coast averages about 25°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 50 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 12 — about 5.3 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Sasayama in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Sasayama peaks around July 15 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 highVery highModerateJul 15UV 10Jan 1UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Sasayama in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Sasayama is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1622 µg/m³Oct 1811 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar21Moderate
Apr22Moderate
May21Moderate
Jun18Moderate
Jul17Moderate
Aug17Moderate
Sep13Moderate
Oct11Good
Nov12Moderate
Dec12Good
Location & terrain

Where is Sasayama?

Sasayama sits at 35.1°N, 135.2°E, 202 m above sea level, in Japan. The nearest listed city is Tamba-Sasayama, 1.0 km away.

Topography around Sasayama

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

Within 3 km, the terrain around Sasayama has significant variations in elevation — a maximum elevation change of 277 m around an average of 243 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 715 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,488 m.

The land around Sasayama is covered by trees (46%) and cropland (33%) within 3 km, trees (84%) within 16 km, and trees (60%) and water (21%) within 80 km.

3 km
277 m
16 km
715 m
80 km
1,488 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Tamba-Sasayama 1.0 km · Tanba 19 km · Sandachō 20 km · Tamba 21 km · Katō 24 km · Nishiwaki 24 km · Kimokawa 25 km · Nantan 25 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 Sasayama (35.0667°, 135.2167°, elevation 202 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).