Muikamachi weather in October

In October, Muikamachi sees average daytime highs of 16°C and overnight lows near 8°C, with 177 mm of precipitation across 16.3 wet days and about 11 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 13°C by the end. The sky is clear or mostly clear about 19% 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 Muikamachi's 5th-clearest and 8th-windiest month. For the whole year in context, see Muikamachi's year-round climate.

Daytime high
16°
6th warmest
Overnight low
8th coldest
Precipitation
177 mm
16.3 wet days
Daylight
11 hours
5:59 AM – 5:00 PM
Cloud cover
69%
5th clearest
Wind
6 km/h
8th windiest
Solar energy
3.06 kWh/m²
Travel score
4.1
out of 10

Muikamachi is dissolved municipality in Minamiuonuma district, Niigata prefecture, Japan.

Founded
1900

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 18°C in the first days to 13°C by the end.

A typical October day in Muikamachi reaches about 16°C in the afternoon and slips back to 8°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 19°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)
11911
21811
31811
41811
51810
61810
71710
81710
91710
10179
11179
12179
13169
14169
15168
16168
17168
18158
19157
20157
21157
22147
23146
24146
25146
26146
27135
28135
29135
30135
31135

How October really feels in Muikamachi

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.

Muikamachi weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -7°21325.225.49.70.0
Feb / -6°16720.820.610.60.0
Mar / -4°16821.118.311.70.1
Apr11° / 13416.76.212.92.1
May17° / 14515.20.6144.8
Jun21° / 13°17917.3014.55.0
Jul24° / 17°24921.1014.35.0
Aug26° / 18°17718013.45.5
Sep22° / 14°18816.3012.35.3
Oct16° / 17716.30.5114.1
Nov / 14418.27.4101.5
Dec / -5°19022.920.19.50.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% 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 66%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22773
32773
42773
52872
62971
72971
83070
93070
103268
113367
123367
133466
143565
153565
163664
173664
183664
193763
203763
213763
223763
233763
243763
253862
263763
273763
283763
293763
303862
313862

Chance of precipitation in October

Any precipitationSnow

Muikamachi gets around 177 mm of rain and snow over 16.3 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 52% and peaks near 56% on the wettest days, and about 1 day brings snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1560
2560
3550
4550
5550
6540
7540
8540
9530
10520
11510
12500
13500
14490
15480
16481
17481
18481
19492
20492
21502
22503
23513
24514
25525
26525
27536
28536
29547
30547
31548

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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1692371
2712261
3732151
4752140
5762040
6781930
7791830
8801730
9831520
10841420
11851320
12861220
13881110
14891010
1590910
1691810
1792710
1893610
1994510
2095410
2197300
2297300
2398200
2498200
2598200
2699100
2799100
2899100
2999100
3099100
31100000

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 6 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
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 5:22 PM to 4:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:455:22
211.65:465:21
311.55:465:19
411.55:475:18
511.55:485:16
611.45:495:15
711.45:505:13
811.35:515:12
911.35:525:10
1011.35:535:09
1111.25:545:07
1211.25:555:06
1311.15:565:05
1411.15:575:03
1511.15:585:02
1611.05:595:00
1711.06:004:59
1811.06:004:58
1910.96:014:56
2010.96:024:55
2110.86:034:54
2210.86:044:53
2310.86:054:51
2410.76:064:50
2510.76:074:49
2610.76:084:48
2710.66:094:47
2810.66:114:46
2910.66:124:45
3010.56:134:43
3110.56:144:42

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.06 kWh/m².

For context, solar energy here swings from a low near 2.07 kWh/m² to a high of 5.57 kWh/m² in May across the year — October's 3.06 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.3Moderate
43.3Moderate
53.3Moderate
63.3Moderate
73.2Moderate
83.2Moderate
93.2Moderate
103.2Moderate
113.2Moderate
123.2Moderate
133.1Moderate
143.1Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.1Moderate
193.0Moderate
203.0Moderate
213.0Moderate
223.0Moderate
233.0Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.9Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in October

Hazard calendar for Muikamachi

In seasonPeak

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

Muikamachi 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 Muikamachi?

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

4.1
Sightseeing
6th-best month of the year
0.7
Beach & pool
6th-best month of the year

October is a reasonable time to visit Muikamachi for sightseeing.

What to pack for Muikamachi in October

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

In October, Muikamachi sees daytime highs around 16°C and nights near 8°C. Pack rain gear. Worth having: a warm layer. About 16 days see rain.

rain geara warm layer

Sea temperature near Muikamachi 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 41 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 Muikamachi 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 Muikamachi 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 Muikamachi 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 Muikamachi is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1821 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug13Moderate
Sep12Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Muikamachi?

Muikamachi sits at 37.1°N, 138.9°E, 162 m above sea level, in Japan. The nearest listed city is Minamiuonuma, 2.0 km away.

Topography around Muikamachi

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

Within 3 km, the terrain around Muikamachi has significant variations in elevation — a maximum elevation change of 461 m around an average of 231 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,862 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,551 m.

The land around Muikamachi is covered by trees (43%) and cropland (33%) within 3 km, trees (77%) within 16 km, and trees (75%) within 80 km.

3 km
461 m
16 km
1,862 m
80 km
2,551 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Minamiuonuma 2.0 km · Shiozawa 4.0 km · Tōkamachi 13 km · Uonuma 21 km · Ojiya 27 km · Nagaoka 43 km · Minakami 43 km · Kashiwazaki 45 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 Muikamachi (37.0667°, 138.8833°, elevation 162 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).