Shūnan weather in October

In October, Shūnan sees average daytime highs of 22°C and overnight lows near 16°C, with 113 mm of rain across 7.7 wet days and about 11.1 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 20°C by the end. The sky is clear or mostly clear about 46% 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 Shūnan's 1st-clearest and 6th-windiest month. For the whole year in context, see Shūnan's year-round climate.

Daytime high
22°
5th warmest
Overnight low
16°
8th coldest
Rainfall
113 mm
7.7 wet days
Daylight
11 h 06 min
6:24 AM – 5:32 PM
Cloud cover
48%
1st clearest
Wind
14 km/h
6th windiest
Solar energy
3.7 kWh/m²
Travel score
7.1
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 20°C by the end.

A typical October day in Shūnan reaches about 22°C in the afternoon and slips back to 16°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 24°C. Set against its neighbours, October runs about 5°C cooler than September and about 5°C warmer than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12419
22419
32419
42419
52418
62318
72318
82318
92318
102318
112317
122217
132217
142217
152217
162216
172216
182216
192116
202116
212116
222115
232115
242015
252015
262015
272015
282014
292014
301914
311914

How October really feels in Shūnan

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.

Shūnan weather by month

How October compares with the rest of the year at a glance. October is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 629.31.3101.7
Feb / 769.51.110.72.0
Mar12° / 12410.70.211.73.3
Apr17° / 11°14810.2012.85.2
May21° / 15°16910.1013.76.3
Jun24° / 20°26414.3014.25.9
Jul27° / 24°25914.70145.5
Aug29° / 25°14712.7013.35.2
Sep26° / 22°16911.5012.26.4
Oct22° / 16°1137.7011.17.1
Nov16° / 11°788.1010.25.5
Dec11° / 699.80.39.82.9

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25545
35545
45644
55743
65842
75941
86040
96040
106139
116238
126238
136238
146337
156436
166436
176436
186436
196436
206436
216337
226337
236337
246337
256337
266337
276238
286337
296337
306337
316337

Chance of precipitation in October

Any precipitation

Shūnan gets around 113 mm of rain over 7.7 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 26% and peaks near 32% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
132
231
331
430
530
629
728
827
927
1026
1125
1225
1325
1424
1524
1624
1724
1824
1924
2024
2124
2224
2324
2424
2524
2624
2724
2824
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 46% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1162631199
2172631188
3192730177
4202830167
5222829146
6242928136
7272927135
8292926125
9322924114
10352923103
1137292193
1240292083
1342291982
1444291872
1546291762
1648291661
1751281551
1852281451
1954271441
2056261341
2159261230
2260251230
2362241130
2464241020
2565231020
2666221020
276821920
287020910
297219810
307219810
317418710

Wind in October

Winds average 14 km/h in October.

Across October, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
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
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

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 6:12 AM to 6:37 AM, and sunset from 5:52 PM to 5:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:125:52
211.66:135:50
311.66:135:49
411.66:145:47
511.56:155:46
611.56:165:45
711.46:165:43
811.46:175:42
911.46:185:41
1011.36:195:39
1111.36:205:38
1211.36:205:37
1311.26:215:35
1411.26:225:34
1511.26:235:33
1611.16:245:32
1711.16:255:31
1811.16:255:29
1911.06:265:28
2011.06:275:27
2111.06:285:26
2210.96:295:25
2310.96:305:24
2410.96:315:22
2510.86:325:21
2610.86:325:20
2710.86:335:19
2810.76:345:18
2910.76:355:17
3010.76:365:16
3110.66:375:15

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.7 kWh/m².

For context, solar energy here swings from a low near 2.29 kWh/m² to a high of 5.52 kWh/m² in May across the year — October's 3.7 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
14.0Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.9Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.8Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.7Moderate
163.7Moderate
173.7Moderate
183.7Moderate
193.6Moderate
203.6Moderate
213.6Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.3Moderate
303.3Moderate
313.3Moderate
Planning a trip in October

Hazard calendar for Shūnan

In seasonPeak

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

Shūnan sits in the Pacific typhoon belt; the season peaks July–October.

Shūnan's rainy season runs March–September, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Shūnan?

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

7.1
Sightseeing
1st-best month of the year
4.7
Beach & pool
5th-best month of the year

October is one of the better times to visit Shūnan for general sightseeing.

What to pack for Shūnan in October

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

In October, Shūnan sees daytime highs around 22°C and nights near 16°C. Little to plan around — just the basics. About 8 days see rain.

Sea temperature near Shūnan 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 23 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 9 to Nov 16 — 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
Mar13Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Shūnan 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 Shūnan peaks around June 23 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Shūnan 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 Shūnan is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateApr 1323 µg/m³Oct 1612 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar23Moderate
Apr23Moderate
May22Moderate
Jun19Moderate
Jul17Moderate
Aug16Moderate
Sep13Moderate
Oct11Good
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Shūnan?

Shūnan sits at 34.1°N, 131.8°E, 316 m above sea level, in Japan. The nearest listed city is Tokuyama, 3.0 km away.

Topography around Shūnan

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

Within 3 km, the terrain around Shūnan has significant variations in elevation — a maximum elevation change of 556 m around an average of 247 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 785 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,367 m.

The land around Shūnan is covered by trees (85%) within 3 km, trees (68%) and water (21%) within 16 km, and water (49%) and trees (45%) within 80 km.

3 km
556 m
16 km
785 m
80 km
1,367 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Tokuyama 3.0 km · Kudamatsu 9.0 km · Hikari 18 km · Hōfu 24 km · Yanai 30 km · Yamaguchi 35 km · Iwakuni 37 km · Ōtake 39 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 Shūnan (34.0805°, 131.8256°, elevation 316 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).