Nihommatsu weather in October

In October, Nihommatsu sees average daytime highs of 18°C and overnight lows near 10°C, with 136 mm of rain across 10.8 wet days and about 11 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 15°C by the end. The sky is clear or mostly clear about 26% 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 Nihommatsu's 6th-clearest and 8th-windiest month. For the whole year in context, see Nihommatsu's year-round climate.

Daytime high
18°
6th warmest
Overnight low
10°
7th coldest
Rainfall
136 mm
10.8 wet days
Daylight
11 hours
5:53 AM – 4:54 PM
Cloud cover
64%
6th clearest
Wind
9 km/h
8th windiest
Solar energy
2.93 kWh/m²
Travel score
5.5
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 15°C by the end.

A typical October day in Nihommatsu reaches about 18°C in the afternoon and slips back to 10°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 21°C. Set against its neighbours, October runs about 6°C cooler than September and about 6°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12013
22013
32013
42013
52013
62012
71912
81912
91912
101911
111911
121911
131811
141811
151810
161810
171810
181710
191710
20179
21179
22179
23169
24168
25168
26168
27168
28168
29157
30157
31157

How October really feels in Nihommatsu

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.

Nihommatsu weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°579.18.89.70.0
Feb / -3°478.36.910.60.0
Mar / -0°8611.25.611.71.4
Apr14° / 9511.51.412.94.1
May20° / 11°9711.50145.9
Jun23° / 15°11213.1014.55.9
Jul26° / 19°17317.3014.35.2
Aug28° / 21°13014.7013.45.4
Sep24° / 17°15113.2012.36.0
Oct18° / 10°13610.80115.5
Nov12° / 678.10.5103.2
Dec / -1°499.35.39.50.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% 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 56%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23664
33664
43763
53763
63763
73961
83961
94060
104060
114159
124159
134159
144159
154258
164357
174357
184357
194456
204654
214654
224654
234852
244753
254951
265050
275149
285248
295347
305446
315545

Chance of precipitation in October

Any precipitation

Nihommatsu gets around 136 mm of rain over 10.8 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 34% and peaks near 40% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
240
339
439
538
638
738
837
937
1036
1136
1236
1335
1435
1534
1634
1734
1833
1933
2033
2132
2232
2332
2431
2531
2630
2730
2829
2929
3028
3128

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 78% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14738123
24937113
35037112
45236102
5543592
6563482
7593371
8613171
9642961
10662761
11702451
12722251
13762040
14781840
15811540
16831430
17851230
18871030
1989920
2091720
2192620
2294510
2394510
2495410
2596310
2696310
2796310
2896310
2998200
3098200
3198200

Wind in October

Winds average 9 km/h in October.

Across October, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 6:08 AM, and sunset from 5:16 PM to 4:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:395:16
211.65:405:14
311.55:415:13
411.55:415:11
511.55:425:10
611.45:435:08
711.45:445:07
811.35:455:05
911.35:465:04
1011.35:475:02
1111.25:485:01
1211.25:494:59
1311.15:504:58
1411.15:514:56
1511.15:524:55
1611.05:534:54
1711.05:544:52
1810.95:554:51
1910.95:564:50
2010.95:574:48
2110.85:584:47
2210.85:594:46
2310.76:004:45
2410.76:014:43
2510.76:024:42
2610.66:034:41
2710.66:044:40
2810.66:054:39
2910.56:064:38
3010.56:074:36
3110.56:084:35

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.93 kWh/m².

For context, solar energy here swings from a low near 2.19 kWh/m² to a high of 5.38 kWh/m² in May across the year — October's 2.93 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.1Moderate
33.1Moderate
43.1Moderate
53.1Moderate
63.1Moderate
73.1Moderate
83.0Moderate
93.0Moderate
103.0Moderate
113.0Moderate
123.0Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
172.9Moderate
182.9Moderate
192.9Moderate
202.9Moderate
212.9Moderate
222.9Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.7Moderate
312.7Moderate
Planning a trip in October

Hazard calendar for Nihommatsu

In seasonPeak

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

Nihommatsu 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 Nihommatsu?

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

5.5
Sightseeing
4th-best month of the year
1.7
Beach & pool
6th-best month of the year

October is a reasonable time to visit Nihommatsu for sightseeing.

What to pack for Nihommatsu in October

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

In October, Nihommatsu sees daytime highs around 18°C and nights near 10°C. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Nihommatsu in October

The nearest coast averages about 20°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 61 km away) is warmest in August at about 23°C and coldest in March near 10°C.

It's comfortable for a long swim from Jul 9 to Oct 11 — about 3.1 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar10Bracing
Apr11Bracing
May14Bracing
Jun18Cool
Jul21Refreshing
Aug23Refreshing
Sep23Refreshing
Oct20Cool
Nov17Cool
Dec15Bracing

UV index in Nihommatsu 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 Nihommatsu peaks around August 11 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 11UV 9Jan 10UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Nihommatsu 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 Nihommatsu is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 1810 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug12Good
Sep11Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Nihommatsu?

Nihommatsu sits at 37.6°N, 140.4°E, 224 m above sea level, in Japan. The nearest listed city is Motomiya, 8.0 km away.

Topography around Nihommatsu

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

Within 3 km, the terrain around Nihommatsu has only modest variations in elevation — a maximum elevation change of 181 m around an average of 235 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,657 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,110 m.

The land around Nihommatsu is covered by trees (55%) and artificial surfaces (24%) within 3 km, trees (77%) within 16 km, and trees (71%) within 80 km.

3 km
181 m
16 km
1,657 m
80 km
2,110 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Motomiya 8.0 km · Miharu 17 km · Fukushima 19 km · Funehikimachi-funehiki 20 km · Kōriyama 21 km · Tamura 23 km · Date 27 km · Hobaramachi 28 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 Nihommatsu (37.5833°, 140.4333°, elevation 224 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).