Oshima weather in October

In October, Oshima sees average daytime highs of 20°C and overnight lows near 16°C, with 150 mm of rain across 13.1 wet days and about 11 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 17°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 30 min by month's end. Set against the rest of the year, October is Oshima's 3rd-clearest and 7th-windiest month. For the whole year in context, see Oshima's year-round climate.

Daytime high
20°
5th warmest
Overnight low
16°
8th coldest
Rainfall
150 mm
13.1 wet days
Daylight
11 hours
6:07 AM – 5:09 PM
Cloud cover
57%
3rd clearest
Wind
16 km/h
7th windiest
Solar energy
3.36 kWh/m²
Travel score
5.8
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 17°C by the end.

A typical October day in Oshima reaches about 20°C in the afternoon and slips back to 16°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 22°C. Set against its neighbours, October runs about 5°C cooler than September and about 5°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12219
22219
32219
42219
52218
62118
72118
82118
92118
102117
112117
122017
132017
142017
152017
162016
172016
181916
191916
201916
211915
221915
231915
241815
251815
261815
271814
281814
291814
301714
311714

How October really feels in Oshima

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.

Oshima weather by month

How October compares with the rest of the year at a glance. October is the 5th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 19624.18.89.80.5
Feb / 13218.97.310.60.6
Mar / 13416.12.211.71.7
Apr14° / 11712.10.112.93.8
May18° / 14°11811.50145.8
Jun22° / 19°14711014.56.3
Jul26° / 23°22314.1014.35.9
Aug28° / 25°14811.3013.45.9
Sep25° / 22°18813.2012.36.2
Oct20° / 16°15013.10115.8
Nov15° / 11°17417.50103.6
Dec / 22323.44.49.51.4

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% 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 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34555
44555
54555
64654
74852
84852
94951
105050
115149
125248
135248
145347
155446
165446
175446
185545
195545
205446
215545
225545
235545
245545
255545
265446
275545
285545
295545
305545
315545

Chance of precipitation in October

Any precipitation

Oshima gets around 150 mm of rain over 13.1 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 42% and peaks near 47% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
143
243
343
443
543
643
743
842
942
1042
1142
1241
1341
1440
1540
1640
1740
1840
1940
2040
2140
2241
2342
2442
2543
2644
2745
2845
2946
3046
3147

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 50% 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 (%)
1192936152
2203035142
3213034131
4233133121
5253232111
6273230101
7293228101
831332791
934332581
1036332370
1139332170
1242322060
1344321850
1447311750
1549311640
1652301440
1755291330
1857281230
1959281120
2061271020
216426910
226625810
236825700
246924700
257123600
267322500
277421500
287620400
297719400
307918300
317918300

Wind in October

Winds average 16 km/h in October.

Across October, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 30 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 5:53 AM to 6:22 AM, and sunset from 5:31 PM to 4:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:535:31
211.65:545:29
311.55:555:28
411.55:565:26
511.55:575:25
611.45:585:23
711.45:585:22
811.35:595:20
911.36:005:19
1011.36:015:17
1111.26:025:16
1211.26:035:14
1311.26:045:13
1411.16:055:12
1511.16:065:10
1611.06:075:09
1711.06:085:08
1811.06:095:06
1910.96:105:05
2010.96:115:04
2110.86:125:02
2210.86:135:01
2310.86:145:00
2410.76:154:59
2510.76:164:58
2610.76:174:56
2710.66:184:55
2810.66:194:54
2910.66:204:53
3010.56:214:52
3110.56:224:51

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.36 kWh/m².

For context, solar energy here swings from a low near 1.89 kWh/m² to a high of 5.85 kWh/m² in May across the year — October's 3.36 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.7Moderate
33.7Moderate
43.7Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.6Moderate
93.6Moderate
103.5Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.4Moderate
183.3Moderate
193.3Moderate
203.3Moderate
213.2Moderate
223.2Moderate
233.1Moderate
243.1Moderate
253.1Moderate
263.0Moderate
273.0Moderate
283.0Moderate
292.9Moderate
302.9Moderate
312.9Moderate
Planning a trip in October

Hazard calendar for Oshima

In seasonPeak

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

Oshima 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 Oshima?

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

5.8
Sightseeing
5th-best month of the year
2.9
Beach & pool
5th-best month of the year

October is a reasonable time to visit Oshima for sightseeing.

What to pack for Oshima in October

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

In October, Oshima sees daytime highs around 20°C and nights near 16°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Oshima in October

The nearest coast averages about 22°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 18 km away) is warmest in August at about 27°C and coldest in March near 11°C.

It's comfortable for a long swim from Jun 17 to Nov 3 — about 4.6 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar11Bracing
Apr12Bracing
May16Cool
Jun20Cool
Jul24Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Oshima in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Oshima peaks around August 14 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 14UV 10Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug10Very high
Sep9Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Oshima 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 Oshima is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1722 µg/m³Oct 1110 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar21Moderate
Apr23Moderate
May21Moderate
Jun18Moderate
Jul15Moderate
Aug12Good
Sep10Good
Oct10Good
Nov11Good
Dec10Good
Location & terrain

Where is Oshima?

Oshima sits at 37.0°N, 136.8°E, 11 m above sea level, in Japan. The nearest listed city is Hakui, 12 km away.

Topography around Oshima

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

Within 3 km, the terrain around Oshima has only modest variations in elevation — a maximum elevation change of 84 m around an average of 11 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 478 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,375 m.

The land around Oshima is covered by water (40%) and trees (30%) within 3 km, water (44%) and trees (40%) within 16 km, and water (55%) and trees (34%) within 80 km.

3 km
84 m
16 km
478 m
80 km
2,375 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Hakui 12 km · Hitoto 12 km · Nanao 19 km · Himimachi 24 km · Himi 24 km · Kahoku 26 km · Anamizu 30 km · Takaoka 34 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 Oshima (36.9871°, 136.7725°, elevation 11 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).