Inzai weather in October

In October, Inzai sees average daytime highs of 21°C and overnight lows near 16°C, with 207 mm of rain across 13 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 23°C in the first days to 19°C by the end. The sky is clear or mostly clear about 31% 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 Inzai's 6th-clearest and 6th-windiest month. For the whole year in context, see Inzai's year-round climate.

Daytime high
21°
6th warmest
Overnight low
16°
8th coldest
Rainfall
207 mm
13 wet days
Daylight
11 h 06 min
5:52 AM – 4:57 PM
Cloud cover
61%
6th clearest
Wind
12 km/h
6th windiest
Solar energy
3 kWh/m²
Travel score
6.1
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 19°C by the end.

A typical October day in Inzai reaches about 21°C in the afternoon and slips back to 16°C overnight — a 6°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 5°C cooler than September and about 5°C warmer than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12418
22418
32318
42318
52318
62318
72317
82317
92317
102217
112217
122217
132216
142216
152216
162116
172115
182115
192115
202115
212115
222014
232014
242014
252014
262014
272014
281913
291913
301913
311913

How October really feels in Inzai

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.

Inzai 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 / 757.60.89.82.1
Feb10° / 718.41.110.62.3
Mar13° / 12512.80.511.73.5
Apr18° / 10°11312.6012.95.3
May22° / 15°12811.6013.96.3
Jun25° / 19°15913.7014.45.8
Jul29° / 23°15013.8014.24.9
Aug30° / 24°11411.9013.44.5
Sep27° / 21°17514.3012.25.6
Oct21° / 16°20713011.16.1
Nov16° / 10°10210.4010.15.2
Dec12° / 688.40.19.63.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23862
33862
43961
54060
64060
74159
84258
94159
104258
114258
124357
134456
144456
154456
164555
174555
184555
194654
204753
214852
224852
234852
245050
255050
265149
275248
285248
295347
305347
315446

Chance of precipitation in October

Any precipitation

Inzai gets around 207 mm of rain over 13 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 42% 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
1044
1144
1243
1343
1442
1542
1642
1741
1841
1941
2041
2140
2240
2340
2439
2539
2638
2738
2838
2937
3037
3136

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 38% of days. Sticky, muggy-or-worse air turns up on roughly 12% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1141936256
2152036245
3162036234
4172136223
5182136213
6202235203
7212334192
8222533182
9242632172
10252830152
11272929141
12293127131
13303225121
14323323111
15343421101
1636352091
1738361881
1840361771
1942361561
2045361450
2147351340
2249351240
2351341230
2452341130
2555331020
2656321020
275831920
286030910
296328810
306427810
316527710

Wind in October

Winds average 12 km/h in October.

Across October, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 5:39 AM to 6:06 AM, and sunset from 5:18 PM to 4:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:395:18
211.65:405:16
311.65:415:15
411.55:425:13
511.55:425:12
611.45:435:10
711.45:445:09
811.45:455:07
911.35:465:06
1011.35:475:05
1111.35:485:03
1211.25:495:02
1311.25:495:01
1411.15:504:59
1511.15:514:58
1611.15:524:57
1711.05:534:55
1811.05:544:54
1911.05:554:53
2010.95:564:52
2110.95:574:50
2210.95:584:49
2310.85:594:48
2410.86:004:47
2510.86:014:46
2610.76:024:45
2710.76:034:43
2810.66:044:42
2910.66:044:41
3010.66:054:40
3110.56:064:39

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3 kWh/m².

For context, solar energy here swings from a low near 2.32 kWh/m² to a high of 5.31 kWh/m² in May across the year — October's 3 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.3Moderate
23.3Moderate
33.3Moderate
43.2Moderate
53.2Moderate
63.2Moderate
73.1Moderate
83.1Moderate
93.1Moderate
103.1Moderate
113.1Moderate
123.1Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
183.0Moderate
193.0Moderate
203.0Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.9Moderate
282.9Moderate
292.9Moderate
302.8Moderate
312.8Moderate
Planning a trip in October

Hazard calendar for Inzai

In seasonPeak

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

Inzai 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 Inzai?

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

6.1
Sightseeing
2nd-best month of the year
3.9
Beach & pool
6th-best month of the year

October is a reasonable time to visit Inzai for sightseeing.

What to pack for Inzai in October

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

In October, Inzai sees daytime highs around 21°C and nights near 16°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Inzai 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 35 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 Inzai 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 Inzai 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 Inzai 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 Inzai 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 Inzai?

Inzai sits at 35.8°N, 140.2°E, 28 m above sea level, in Japan. The nearest listed city is Fukawa, 2.0 km away.

Topography around Inzai

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

Within 3 km, the terrain around Inzai has only modest variations in elevation — a maximum elevation change of 47 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 61 m; within 80 km, large variations in elevation — a maximum elevation change of 840 m.

The land around Inzai is covered by trees (33%), cropland (24%) and artificial surfaces (24%) within 3 km, cropland (32%), trees (29%) and artificial surfaces (27%) within 16 km, and water (28%), artificial surfaces (26%) and trees (25%) within 80 km.

3 km
47 m
16 km
61 m
80 km
840 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Fukawa 2.0 km · Ajiki 6.0 km · Ryūgasaki 7.0 km · Shiroi 10 km · Fujishiro 10 km · Toride 10 km · Yachiyo 12 km · Abiko 14 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 Inzai (35.8348°, 140.1636°, elevation 28 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).