Tōkamachi weather in October

In October, Tōkamachi sees average daytime highs of 20°C and overnight lows near 11°C, with 174 mm of rain across 15.9 wet days and about 11 hours of daylight. It is the 6th-warmest and 5th-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 21% 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 Tōkamachi's 4th-clearest and 8th-windiest month. For the whole year in context, see Tōkamachi's year-round climate.

Daytime high
20°
6th warmest
Overnight low
11°
7th coldest
Rainfall
174 mm
15.9 wet days
Daylight
11 hours
5:59 AM – 5:01 PM
Cloud cover
65%
4th clearest
Wind
6 km/h
8th windiest
Solar energy
3.09 kWh/m²
Travel score
5.3
out of 10

Tōkamachi is city in Niigata Prefecture, Japan.

Density
90/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 22°C in the first days to 17°C by the end.

A typical October day in Tōkamachi reaches about 20°C in the afternoon and slips back to 11°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 24°C. Set against its neighbours, October runs about 6°C cooler than September and about 6°C warmer than November.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12314
22214
32214
42213
52213
62213
72213
82113
92112
102112
112112
122112
132012
142011
152011
162011
172011
181910
191910
201910
211910
221810
23189
24189
25189
26189
27179
28178
29178
30178
31178

How October really feels in Tōkamachi

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.

Tōkamachi weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°22725.621.99.70.0
Feb / -2°16821.417.810.60.1
Mar / -0°16220.611.711.71.3
Apr16° / 12215.51.712.94.3
May22° / 11°12713.90146.0
Jun25° / 16°15115.3014.55.7
Jul29° / 21°24319.1014.34.4
Aug30° / 21°17116.7013.44.2
Sep26° / 17°17715.8012.35.5
Oct20° / 11°17415.90115.3
Nov13° / 16618.22.3103.0
Dec / -0°21823.614.29.50.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% 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 60%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23466
33565
43565
53664
63664
73763
83862
93961
103961
114060
124060
134258
144258
154258
164357
174357
184258
194258
204357
214258
224258
234258
244258
254159
264159
274159
284159
294060
304060
314060

Chance of precipitation in October

Any precipitation

Tōkamachi gets around 174 mm of rain over 15.9 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 50% and peaks near 53% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
152
252
352
452
551
651
751
851
950
1050
1149
1249
1348
1448
1548
1648
1748
1848
1948
2049
2150
2250
2351
2451
2552
2652
2752
2853
2953
3053
3153

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 68% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
130382571
232382460
334382360
436372250
538362140
641352040
744341940
847321830
950311630
1054291520
1157271420
1260251320
1364231210
1468211010
157119910
167318810
177616710
187815610
198014600
208312500
218511400
228611300
238710300
24899200
25908200
26918100
27927100
28936100
29936100
30945100
31955000

Wind in October

Winds average 6 km/h in October.

Across October, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 5:45 AM to 6:14 AM, and sunset from 5:23 PM to 4:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:455:23
211.65:465:21
311.55:475:20
411.55:485:18
511.55:495:17
611.45:505:15
711.45:515:14
811.35:525:12
911.35:525:11
1011.35:535:09
1111.25:545:08
1211.25:555:06
1311.15:565:05
1411.15:575:04
1511.15:585:02
1611.05:595:01
1711.06:004:59
1811.06:014:58
1910.96:024:57
2010.96:034:56
2110.86:044:54
2210.86:054:53
2310.86:064:52
2410.76:074:51
2510.76:084:49
2610.76:094:48
2710.66:104:47
2810.66:114:46
2910.56:124:45
3010.56:134:44
3110.56:144:43

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.09 kWh/m².

For context, solar energy here swings from a low near 1.86 kWh/m² to a high of 5.67 kWh/m² in May across the year — October's 3.09 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.4Moderate
33.4Moderate
43.4Moderate
53.4Moderate
63.3Moderate
73.3Moderate
83.3Moderate
93.3Moderate
103.3Moderate
113.2Moderate
123.2Moderate
133.2Moderate
143.2Moderate
153.2Moderate
163.1Moderate
173.1Moderate
183.1Moderate
193.0Moderate
203.0Moderate
213.0Moderate
223.0Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.7Moderate
312.7Moderate
Planning a trip in October

Hazard calendar for Tōkamachi

In seasonPeak

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

Tōkamachi 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 Tōkamachi?

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

5.3
Sightseeing
4th-best month of the year
2.7
Beach & pool
6th-best month of the year

October is a reasonable time to visit Tōkamachi for sightseeing.

What to pack for Tōkamachi in October

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

In October, Tōkamachi sees daytime highs around 20°C and nights near 11°C. Pack rain gear. About 16 days see rain.

rain gear

Sea temperature near Tōkamachi 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 30 km away) is warmest in August at about 27°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 21 to Oct 31 — about 4.4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb11Bracing
Mar10Bracing
Apr11Bracing
May15Bracing
Jun20Cool
Jul23Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov18Cool
Dec15Cool

UV index in Tōkamachi 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 Tōkamachi peaks around August 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highModerateAug 12UV 10Dec 21UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Moderate

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

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1723 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun19Moderate
Jul17Moderate
Aug14Moderate
Sep12Moderate
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Tōkamachi?

Tōkamachi sits at 37.1°N, 138.8°E, 154 m above sea level, in Japan. The nearest listed city is Minamiuonuma, 11 km away.

Topography around Tōkamachi

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

Within 3 km, the terrain around Tōkamachi has significant variations in elevation — a maximum elevation change of 340 m around an average of 207 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 970 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,551 m.

The land around Tōkamachi is covered by trees (54%) and artificial surfaces (21%) within 3 km, trees (75%) within 16 km, and trees (69%) and water (20%) within 80 km.

3 km
340 m
16 km
970 m
80 km
2,551 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Minamiuonuma 11 km · Muikamachi 13 km · Shiozawa 13 km · Ojiya 19 km · Uonuma 21 km · Kashiwazaki 32 km · Nagaoka 36 km · Tochio-honchō 43 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 Tōkamachi (37.1333°, 138.7667°, elevation 154 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).