Jōsō weather in October

In October, Jōsō sees average daytime highs of 21°C and overnight lows near 14°C, with 186 mm of rain across 12.5 wet days and about 11.1 hours of daylight. It is the 6th-warmest and 1st-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 32% 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 Jōsō's 6th-clearest and 10th-windiest month. For the whole year in context, see Jōsō's year-round climate.

Daytime high
21°
6th warmest
Overnight low
14°
7th coldest
Rainfall
186 mm
12.5 wet days
Daylight
11 h 06 min
5:53 AM – 4:57 PM
Cloud cover
61%
6th clearest
Wind
10 km/h
10th windiest
Solar energy
2.9 kWh/m²
Travel score
6.2
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 Jōsō reaches about 21°C in the afternoon and slips back to 14°C overnight — a 7°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 5°C warmer than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12417
22417
32417
42317
52317
62317
72316
82316
92316
102216
112216
122215
132215
142215
152215
162115
172114
182114
192114
202114
212113
222013
232013
242013
252013
262012
272012
281912
291912
301911
311911

How October really feels in Jōsō

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.

Jōsō weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 606.51.29.82.0
Feb10° / 587.21.710.62.3
Mar13° / 10611.60.911.73.7
Apr18° / 10°10611.30.112.95.6
May23° / 15°13112.4013.96.3
Jun26° / 19°15414.9014.45.5
Jul29° / 23°16315.4014.24.5
Aug31° / 24°12313.6013.44.2
Sep27° / 20°16713.9012.25.5
Oct21° / 14°18612.5011.16.2
Nov16° / 859.1010.15.3
Dec11° / 566.80.19.63.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23763
33862
44060
54060
64159
74159
84159
94258
104258
114357
124357
134456
144456
154456
164555
174654
184753
194654
204753
214852
224852
234951
245149
255248
265347
275446
285545
295644
305644
315743

Chance of precipitation in October

Any precipitation

Jōsō gets around 186 mm of rain over 12.5 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
146
245
345
445
544
644
744
844
944
1043
1143
1242
1342
1441
1540
1640
1739
1839
1938
2038
2138
2237
2337
2437
2536
2636
2735
2835
2935
3034
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 46% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1172337194
2182337183
3192437172
4212436172
5222536162
6242535151
7262634141
8282632131
9302731121
10322829111
11342827101
1237292590
1339302380
1441302170
1543311960
1646311760
1748311550
1851311440
1953311240
2056301130
2157301030
226029920
236129820
246428710
256527710
266726610
276925510
287024510
297222510
307521400
317620400

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
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 5:40 AM to 6:08 AM, and sunset from 5:18 PM to 4:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:405:18
211.65:415:17
311.65:425:15
411.55:435:14
511.55:435:12
611.45:445:11
711.45:455:10
811.45:465:08
911.35:475:07
1011.35:485:05
1111.35:495:04
1211.25:505:03
1311.25:505:01
1411.15:515:00
1511.15:524:59
1611.15:534:57
1711.05:544:56
1811.05:554:55
1911.05:564:53
2010.95:574:52
2110.95:584:51
2210.85:594:50
2310.86:004:49
2410.86:014:47
2510.76:024:46
2610.76:034:45
2710.76:044:44
2810.66:054:43
2910.66:064:42
3010.66:074:41
3110.56:084:40

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.9 kWh/m².

For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 5.12 kWh/m² in May across the year — October's 2.9 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.1Moderate
43.1Moderate
53.0Moderate
63.0Moderate
73.0Moderate
83.0Moderate
93.0Moderate
103.0Moderate
112.9Moderate
122.9Moderate
132.9Moderate
142.9Moderate
152.9Moderate
162.9Moderate
172.9Moderate
182.9Moderate
192.9Moderate
202.9Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.8Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in October

Hazard calendar for Jōsō

In seasonPeak

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

Jōsō 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 Jōsō?

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

6.2
Sightseeing
2nd-best month of the year
3.9
Beach & pool
6th-best month of the year

October is a reasonable time to visit Jōsō for sightseeing.

What to pack for Jōsō in October

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

In October, Jōsō sees daytime highs around 21°C and nights near 14°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Jōsō 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 46 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 7 to Nov 3 — about 4.9 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Jōsō 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 Jōsō peaks around July 21 at about 10 (very high) — 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 highModerateJul 21UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Jōsō 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 Jōsō is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2425 µg/m³Dec 1914 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar25Moderate
Apr25Moderate
May24Moderate
Jun19Moderate
Jul16Moderate
Aug15Moderate
Sep15Moderate
Oct16Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Jōsō?

Jōsō sits at 36.0°N, 140.0°E, 10 m above sea level, in Japan. The nearest listed city is Mitsukaidō, 3.0 km away.

Topography around Jōsō

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

Within 3 km, the terrain around Jōsō has only modest variations in elevation — a maximum elevation change of 33 m around an average of 15 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 50 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,387 m.

The land around Jōsō is covered by cropland (42%), trees (26%) and artificial surfaces (25%) within 3 km, cropland (39%), artificial surfaces (30%) and trees (22%) within 16 km, and trees (34%), artificial surfaces (28%) and cropland (21%) within 80 km.

3 km
33 m
16 km
50 m
80 km
1,387 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Mitsukaidō 3.0 km · Iwai 6.0 km · Tsukubamirai 7.0 km · Ishige 9.0 km · Bandō 9.0 km · Moriya 12 km · Noda 13 km · Tsukuba 15 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 Jōsō (36.0355°, 139.9614°, elevation 10 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).