Mutsu weather in October

In October, Mutsu sees average daytime highs of 15°C and overnight lows near 13°C, with 113 mm of rain across 12.4 wet days and about 10.9 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 12°C by the end. The sky is clear or mostly clear about 34% 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 12 min by month's end. Set against the rest of the year, October is Mutsu's 2nd-clearest and 6th-windiest month. For the whole year in context, see Mutsu's year-round climate.

Daytime high
15°
4th warmest
Overnight low
13°
8th coldest
Rainfall
113 mm
12.4 wet days
Daylight
10 h 54 min
5:54 AM – 4:46 PM
Cloud cover
57%
2nd clearest
Wind
25 km/h
6th windiest
Solar energy
3.11 kWh/m²
Travel score
4.5
out of 10

Mutsu is city in Aomori Prefecture, Japan.

Density
65/km²
people per km²
Founded
1959

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 12°C by the end.

A typical October day in Mutsu reaches about 15°C in the afternoon and slips back to 13°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 18°C. Set against its neighbours, October runs about 5°C cooler than September and about 7°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11917
21816
31816
41816
51816
61816
71815
81715
91715
101715
111714
121714
131614
141614
151613
161513
171513
181512
191512
201412
211411
221411
231311
241311
251310
261310
271310
281210
29129
30129
31129

How October really feels in Mutsu

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.

Mutsu weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°10018.416.89.40.0
Feb / -2°71141410.30.0
Mar / 7112.2811.70.0
Apr / 7410.21.513.10.7
May11° / 9910.8014.32.7
Jun15° / 13°909.3014.94.6
Jul19° / 18°14011.7014.75.8
Aug22° / 20°15311.3013.76.4
Sep21° / 19°15112.3012.35.9
Oct15° / 13°11312.4010.94.5
Nov / 8613.21.69.71.5
Dec / 11016.411.29.10.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 18% of October, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24753
34753
44753
54753
64852
74852
85050
95050
105149
115149
125248
135347
145446
155347
165446
175446
185545
195545
205644
215644
225644
235644
245644
255644
265644
275743
285743
295743
305743
315743

Chance of precipitation in October

Any precipitation

Mutsu gets around 113 mm of rain over 12.4 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 40% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
143
243
343
444
544
644
744
843
943
1042
1142
1241
1340
1440
1539
1638
1738
1837
1937
2036
2136
2236
2337
2437
2537
2638
2738
2838
2939
3039
3139

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 82% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15330152
25629141
35828131
46127111
56326101
6652591
7672481
8692371
9732160
10752050
11771850
12791740
13801640
14831430
15841330
16851230
17871120
18881020
1989920
2090820
2193610
2293610
2394510
2495410
2596310
2696310
2798200
2898200
2998200
3099100
3199100

Wind in October

Winds average 25 km/h in October.

Across October, daily wind ranges from about 25 km/h on the calmest days to 26 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
125breezy
225breezy
325breezy
425breezy
526breezy
626breezy
726breezy
826breezy
926breezy
1026breezy
1126breezy
1226breezy
1325breezy
1425breezy
1525breezy
1625breezy
1725breezy
1825breezy
1925breezy
2025breezy
2125breezy
2225breezy
2325breezy
2425breezy
2525breezy
2625breezy
2726breezy
2826breezy
2926breezy
3026breezy
3126breezy

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over October. Sunrise moves from 5:37 AM to 6:12 AM, and sunset from 5:11 PM to 4:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:375:11
211.55:385:09
311.55:395:08
411.45:405:06
511.45:425:04
611.35:435:02
711.35:445:01
811.25:454:59
911.25:464:58
1011.15:474:56
1111.15:484:54
1211.15:494:53
1311.05:514:51
1411.05:524:49
1510.95:534:48
1610.95:544:46
1710.85:554:45
1810.85:564:43
1910.75:574:42
2010.75:594:40
2110.76:004:39
2210.66:014:37
2310.66:024:36
2410.56:034:35
2510.56:054:33
2610.46:064:32
2710.46:074:31
2810.46:084:29
2910.36:094:28
3010.36:114:27
3110.26:124:26

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.11 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 5.67 kWh/m² in May across the year — October's 3.11 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.5Moderate
43.4Moderate
53.4Moderate
63.4Moderate
73.3Moderate
83.3Moderate
93.3Moderate
103.3Moderate
113.3Moderate
123.2Moderate
133.2Moderate
143.2Moderate
153.2Moderate
163.1Moderate
173.1Moderate
183.1Moderate
193.1Moderate
203.0Moderate
213.0Moderate
223.0Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.7Moderate
302.7Moderate
312.6Moderate
Planning a trip in October

Hazard calendar for Mutsu

In seasonPeak

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

Mutsu 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 Mutsu?

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

4.5
Sightseeing
5th-best month of the year
0.7
Beach & pool
4th-best month of the year

October is a reasonable time to visit Mutsu for sightseeing.

What to pack for Mutsu in October

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

In October, Mutsu sees daytime highs around 15°C and nights near 13°C. Worth packing: a warm layer, rain gear and a windbreaker. About 12 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Mutsu 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 offshore is warmest in August at about 22°C and coldest in March near 7°C.

It's comfortable for a long swim from Jul 31 to Oct 3 — about 2.1 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan10Bracing
Feb7Bracing
Mar7Bracing
Apr8Bracing
May11Bracing
Jun14Bracing
Jul18Cool
Aug22Refreshing
Sep22Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Mutsu 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 Mutsu peaks around August 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 1 (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 11UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr6High
May8Very high
Jun7Very high
Jul5Moderate
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Mutsu 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 Mutsu is worst in April — around 19 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1419 µg/m³Dec 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb12Good
Mar17Moderate
Apr19Moderate
May16Moderate
Jun11Good
Jul10Good
Aug10Good
Sep9Good
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Mutsu?

Mutsu sits at 41.3°N, 141.2°E, 6 m above sea level, in Japan. The nearest listed city is Toyota, 60 km away.

Topography around Mutsu

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

Within 3 km, the terrain around Mutsu has only modest variations in elevation — a maximum elevation change of 63 m around an average of 14 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 868 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,559 m.

The land around Mutsu is covered by trees (38%) and artificial surfaces (27%) within 3 km, trees (59%) and water (33%) within 16 km, and water (63%) and trees (31%) within 80 km.

3 km
63 m
16 km
868 m
80 km
1,559 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Toyota 60 km · Aomori 66 km · Hakodate 67 km · Misawa 69 km · Towada 74 km · Hitokawame 75 km · Kamiiso 76 km · Hokuto 76 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 Mutsu (41.2894°, 141.2169°, elevation 6 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).