Kuroishi weather in October

In October, Kuroishi sees average daytime highs of 17°C and overnight lows near 9°C, with 119 mm of precipitation across 13.5 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 14°C by the end. The sky is clear or mostly clear about 25% 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 18 min by month's end. Set against the rest of the year, October is Kuroishi's 2nd-clearest and 8th-windiest month. For the whole year in context, see Kuroishi's year-round climate.

Daytime high
17°
6th warmest
Overnight low
7th coldest
Precipitation
119 mm
13.5 wet days
Daylight
10 h 54 min
5:56 AM – 4:50 PM
Cloud cover
62%
2nd clearest
Wind
10 km/h
8th windiest
Solar energy
2.97 kWh/m²
Travel score
4.8
out of 10

Kuroishi is city in Aomori Prefecture, Japan.

Density
178/km²
people per km²
Founded
1954

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 14°C by the end.

A typical October day in Kuroishi reaches about 17°C in the afternoon and slips back to 9°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 20°C. Set against its neighbours, October runs about 6°C cooler than September and about 7°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12012
22012
31912
41912
51911
61911
71911
81811
91810
101810
111810
121710
131710
14179
15179
16179
17169
18168
19168
20168
21168
22158
23157
24157
25157
26157
27147
28147
29146
30146
31136

How October really feels in Kuroishi

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.

Kuroishi weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°7415.920.49.40.0
Feb / -4°7114.717.110.40.0
Mar / -2°8915.411.811.70.3
Apr12° / 8713.32.313.13.1
May18° / 9812.5014.25.4
Jun22° / 14°9811.8014.96.1
Jul25° / 19°14914.8014.65.9
Aug27° / 20°16915.2013.65.7
Sep23° / 16°14813.3012.36.0
Oct17° / 11913.50.110.94.8
Nov / 10215.54.89.71.8
Dec / -2°9717.316.89.10.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 22% of October, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24159
34060
44060
54258
64258
74357
84456
94456
104654
114654
124852
134852
144852
154951
164951
175050
185050
195050
205050
215149
225149
235149
245149
255149
265149
275050
285050
295050
304951
314852

Chance of precipitation in October

Any precipitationSnow

Kuroishi gets around 119 mm of rain and snow over 13.5 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 43% and peaks near 46% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1450
2450
3460
4460
5460
6460
7460
8450
9450
10440
11440
12430
13430
14420
15421
16421
17411
18411
19411
20411
21411
22411
23421
24421
25431
26431
27441
28441
29441
30442
31452

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 86% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1603091
2622981
3652771
4662671
5692461
6712351
7752140
8771940
9791830
10811630
11841420
12851320
13871120
14891010
1590910
1691810
1792710
1893610
1995500
2096400
2196400
2297300
2397300
2498200
2598200
2698200
2798200
2899100
2999100
3099100
3199100

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 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3111calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 5:39 AM to 6:13 AM, and sunset from 5:14 PM to 4:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:395:14
211.55:405:12
311.55:425:10
411.45:435:09
511.45:445:07
611.35:455:05
711.35:465:04
811.35:475:02
911.25:485:01
1011.25:494:59
1111.15:504:57
1211.15:514:56
1311.05:524:54
1411.05:544:53
1510.95:554:51
1610.95:564:50
1710.95:574:48
1810.85:584:47
1910.85:594:45
2010.76:004:44
2110.76:014:42
2210.66:034:41
2310.66:044:40
2410.66:054:38
2510.56:064:37
2610.56:074:36
2710.46:084:34
2810.46:104:33
2910.36:114:32
3010.36:124:31
3110.36:134:29

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.97 kWh/m².

For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 5.49 kWh/m² in May across the year — October's 2.97 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.3Moderate
33.3Moderate
43.3Moderate
53.2Moderate
63.2Moderate
73.2Moderate
83.2Moderate
93.1Moderate
103.1Moderate
113.1Moderate
123.1Moderate
133.1Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
183.0Moderate
192.9Moderate
202.9Moderate
212.9Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.7Moderate
262.7Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.5Moderate
312.5Moderate
Planning a trip in October

Hazard calendar for Kuroishi

In seasonPeak

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

Kuroishi 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 Kuroishi?

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

4.8
Sightseeing
6th-best month of the year
1.1
Beach & pool
6th-best month of the year

October is a reasonable time to visit Kuroishi for sightseeing.

What to pack for Kuroishi in October

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

In October, Kuroishi sees daytime highs around 17°C and nights near 9°C. Worth packing: a warm layer and rain gear. About 14 days see rain.

a warm layerrain gear

Sea temperature near Kuroishi in October

The nearest coast averages about 19°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 23°C and coldest in March near 8°C.

It's comfortable for a long swim from Jul 24 to Oct 7 — about 2.5 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan10Bracing
Feb8Bracing
Mar8Bracing
Apr8Bracing
May11Bracing
Jun15Cool
Jul19Cool
Aug23Refreshing
Sep22Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Kuroishi in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kuroishi peaks around August 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 19UV 8Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar3Moderate
Apr6High
May8Very high
Jun8Very high
Jul5Moderate
Aug9Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Kuroishi 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 Kuroishi is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1620 µg/m³Dec 169 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb13Moderate
Mar18Moderate
Apr20Moderate
May18Moderate
Jun13Moderate
Jul12Good
Aug10Good
Sep10Good
Oct10Good
Nov9Good
Dec8Good
Location & terrain

Where is Kuroishi?

Kuroishi sits at 40.6°N, 140.6°E, 45 m above sea level, in Japan. The nearest listed city is Hirakawa, 7.0 km away.

Topography around Kuroishi

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

Within 3 km, the terrain around Kuroishi has only modest variations in elevation — a maximum elevation change of 63 m around an average of 38 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 824 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,614 m.

The land around Kuroishi is covered by cropland (54%) and artificial surfaces (30%) within 3 km, trees (59%) and cropland (26%) within 16 km, and trees (56%) and water (34%) within 80 km.

3 km
63 m
16 km
824 m
80 km
1,614 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Hirakawa 7.0 km · Namioka 7.0 km · Hirosaki 11 km · Goshogawara 21 km · Aomori 23 km · Tsugaru 23 km · Shimokizukuri 26 km · Ōdate 42 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 Kuroishi (40.6458°, 140.5835°, elevation 45 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).