Sasayama weather in October

In October, Sasayama sees average daytime highs of 21°C and overnight lows near 14°C, with 154 mm of rain across 9.2 wet days and about 11.1 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 19°C by the end. The sky is clear or mostly clear about 37% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 36 min by month's end. Set against the rest of the year, October is Sasayama's 3rd-clearest and 5th-windiest month. For the whole year in context, see Sasayama's year-round climate.

Daytime high
21°
6th warmest
Overnight low
14°
8th coldest
Rainfall
154 mm
9.2 wet days
Daylight
11 h 06 min
6:11 AM – 5:17 PM
Cloud cover
54%
3rd clearest
Wind
10 km/h
5th windiest
Solar energy
3.43 kWh/m²
Travel score
6.7
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 19°C by the end.

A typical October day in Sasayama reaches about 21°C in the afternoon and slips back to 14°C overnight — a 8°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, October runs about 6°C cooler than September and about 6°C warmer than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12417
22416
32416
42416
52316
62316
72315
82315
92315
102315
112215
122214
132214
142214
152214
162114
172113
182113
192113
202113
212112
222012
232012
242012
252012
262011
271911
281911
291911
301911
311910

How October really feels in Sasayama

Once humidity and wind are folded in, October 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

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

Sasayama weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 4th-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 October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 19% of October, with mostly cloudy or overcast conditions the remaining 44%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24753
34753
44753
54852
64951
75050
85149
95248
105347
115347
125545
135545
145644
155743
165743
175842
185941
195941
205941
215941
226040
236040
246040
256040
266139
276139
286139
296238
306139
316139

Chance of precipitation in October

Any precipitation

Sasayama gets around 154 mm of rain over 9.2 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 39% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
238
338
437
536
635
735
834
933
1032
1131
1231
1330
1430
1529
1629
1729
1828
1928
2028
2128
2227
2327
2427
2526
2626
2725
2825
2924
3024
3124

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 58% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1253228133
2263227132
3283326122
4303325112
5313324101
6343323101
736322291
839322081
942311971
1045301771
1148301661
1250281561
1354281350
1456271250
1559261140
1662241040
1764231030
186622930
196921820
207120720
217219720
227518610
237617610
247717510
257816510
268015500
278115400
288214400
298313400
308412400
318611300

Wind in October

Winds average 10 km/h in October.

Across October, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over October. Sunrise moves from 5:59 AM to 6:25 AM, and sunset from 5:38 PM to 5:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:595:38
211.65:595:36
311.66:005:35
411.56:015:33
511.56:025:32
611.56:035:31
711.46:035:29
811.46:045:28
911.46:055:26
1011.36:065:25
1111.36:075:24
1211.26:085:22
1311.26:095:21
1411.26:095:20
1511.16:105:18
1611.16:115:17
1711.16:125:16
1811.06:135:15
1911.06:145:13
2011.06:155:12
2110.96:165:11
2210.96:175:10
2310.96:175:09
2410.86:185:08
2510.86:195:07
2610.86:205:05
2710.76:215:04
2810.76:225:03
2910.76:235:02
3010.66:245:01
3110.66:255:00

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.43 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 — October's 3.43 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.6Moderate
43.6Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.5Moderate
93.5Moderate
103.5Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.5Moderate
153.5Moderate
163.4Moderate
173.4Moderate
183.4Moderate
193.4Moderate
203.4Moderate
213.3Moderate
223.3Moderate
233.3Moderate
243.3Moderate
253.2Moderate
263.2Moderate
273.2Moderate
283.2Moderate
293.1Moderate
303.1Moderate
313.1Moderate
Planning a trip in October

Hazard calendar for Sasayama

In seasonPeak

In October, 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 October a good time to visit Sasayama?

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

6.7
Sightseeing
1st-best month of the year
4.3
Beach & pool
6th-best month of the year

October is a reasonable time to visit Sasayama for sightseeing.

What to pack for Sasayama in October

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

In October, Sasayama sees daytime highs around 21°C and nights near 14°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Sasayama in October

The nearest coast averages about 23°C in October — 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 October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — enough to warrant sun protection. 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 October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October 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
October 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).