Unnan weather in October

In October, Unnan sees average daytime highs of 20°C and overnight lows near 12°C, with 116 mm of rain across 10.6 wet days and about 11.1 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 18°C by the end. The sky is clear or mostly clear about 33% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 36 min by month's end. Set against the rest of the year, October is Unnan's 1st-clearest and 9th-windiest month. For the whole year in context, see Unnan's year-round climate.

Daytime high
20°
6th warmest
Overnight low
12°
7th coldest
Rainfall
116 mm
10.6 wet days
Daylight
11 h 06 min
6:21 AM – 5:26 PM
Cloud cover
57%
1st clearest
Wind
10 km/h
9th windiest
Solar energy
3.51 kWh/m²
Travel score
6.3
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 18°C by the end.

A typical October day in Unnan reaches about 20°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 24°C. Set against its neighbours, October runs about 5°C cooler than September and about 6°C warmer than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12315
22315
32315
42315
52215
62214
72214
82214
92214
102213
112113
122113
132113
142113
152112
162112
172012
182012
192012
202011
212011
221911
231911
241911
251910
261910
271910
281810
291810
301810
31189

How October really feels in Unnan

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.

Unnan weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 1071710.39.90.6
Feb / 10014.88.410.71.0
Mar12° / 12814.93.211.72.7
Apr17° / 11711.40.212.95.3
May22° / 13°12811013.86.4
Jun25° / 18°17514.4014.35.8
Jul29° / 22°22916.6014.14.6
Aug30° / 23°16115.1013.34.4
Sep26° / 18°21314.1012.25.9
Oct20° / 12°11610.6011.16.3
Nov15° / 9411.20.310.14.3
Dec / 11416.36.19.71.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of October, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24159
34159
44258
54357
64456
74555
84654
94555
104753
114852
125050
135050
145050
155248
165248
175248
185347
195347
205347
215446
225446
235347
245347
255347
265347
275347
285446
295446
305446
315446

Chance of precipitation in October

Any precipitation

Unnan gets around 116 mm of rain over 10.6 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 34% and peaks near 41% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
240
340
439
539
638
737
836
936
1035
1134
1233
1333
1433
1532
1632
1732
1832
1932
2032
2132
2232
2332
2433
2533
2633
2733
2833
2933
3033
3134

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 64% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1293623102
2313622102
333362192
435352081
537351981
640341871
743331761
846311661
949301550
1053281450
1156271340
1259251240
1361241140
1465221030
156721930
166920920
177119820
187318720
197617610
207716610
217915510
228015410
238214400
248214400
258413300
268413300
278512300
288512300
298711200
308711200
318810200

Wind in October

Winds average 10 km/h in October.

Across October, daily wind ranges from about 10 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
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 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 60 minutes over October. Sunrise moves from 6:08 AM to 6:35 AM, and sunset from 5:47 PM to 5:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:085:47
211.66:095:45
311.66:105:44
411.56:105:43
511.56:115:41
611.56:125:40
711.46:135:38
811.46:145:37
911.36:155:36
1011.36:155:34
1111.36:165:33
1211.26:175:31
1311.26:185:30
1411.26:195:29
1511.16:205:28
1611.16:215:26
1711.16:215:25
1811.06:225:24
1911.06:235:23
2011.06:245:21
2110.96:255:20
2210.96:265:19
2310.86:275:18
2410.86:285:17
2510.86:295:16
2610.76:305:14
2710.76:315:13
2810.76:325:12
2910.66:335:11
3010.66:345:10
3110.66:355:09

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.51 kWh/m².

For context, solar energy here swings from a low near 2.07 kWh/m² to a high of 5.72 kWh/m² in May across the year — October's 3.51 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.7Moderate
63.7Moderate
73.7Moderate
83.7Moderate
93.7Moderate
103.7Moderate
113.6Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.5Moderate
163.5Moderate
173.5Moderate
183.5Moderate
193.4Moderate
203.4Moderate
213.4Moderate
223.3Moderate
233.3Moderate
243.3Moderate
253.3Moderate
263.2Moderate
273.2Moderate
283.1Moderate
293.1Moderate
303.1Moderate
313.0Moderate
Planning a trip in October

Hazard calendar for Unnan

In seasonPeak

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

Unnan 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 Unnan?

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

6.3
Sightseeing
2nd-best month of the year
3.5
Beach & pool
6th-best month of the year

October is a reasonable time to visit Unnan for sightseeing.

What to pack for Unnan in October

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

In October, Unnan sees daytime highs around 20°C and nights near 12°C. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Unnan 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 29 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 12 to Nov 15 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul24Warm
Aug27Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Unnan 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 Unnan peaks around July 18 at about 10 (extreme) — 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 highExtremeVery highModerateJul 18UV 10Dec 23UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun9Very high
Jul11Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Unnan 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 Unnan is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1222 µg/m³Oct 1310 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb16Moderate
Mar21Moderate
Apr22Moderate
May20Moderate
Jun17Moderate
Jul13Moderate
Aug12Good
Sep11Good
Oct10Good
Nov12Good
Dec11Good
Location & terrain

Where is Unnan?

Unnan sits at 35.2°N, 132.9°E, 82 m above sea level, in Japan. The nearest listed city is Izumo, 18 km away.

Topography around Unnan

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

Within 3 km, the terrain around Unnan has significant variations in elevation — a maximum elevation change of 398 m around an average of 240 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,049 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,623 m.

The land around Unnan is covered by trees (94%) within 3 km, trees (92%) within 16 km, and trees (60%) and water (35%) within 80 km.

3 km
398 m
16 km
1,049 m
80 km
1,623 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Izumo 18 km · Hiratachō 22 km · Matsue 30 km · Ōdachō-ōda 36 km · Yasugichō 37 km · Sakaiminato 44 km · Yonago 45 km · Shōbara 45 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 Unnan (35.2431°, 132.8999°, elevation 82 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).