Nasu weather in October

In October, Nasu sees average daytime highs of 18°C and overnight lows near 10°C, with 185 mm of rain across 14 wet days and about 11 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 16°C by the end. The sky is clear or mostly clear about 27% 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 Nasu's 7th-clearest and 8th-windiest month. For the whole year in context, see Nasu's year-round climate.

Daytime high
18°
6th warmest
Overnight low
10°
7th coldest
Rainfall
185 mm
14 wet days
Daylight
11 hours
5:54 AM – 4:56 PM
Cloud cover
64%
7th clearest
Wind
7 km/h
8th windiest
Solar energy
2.92 kWh/m²
Travel score
5.2
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 16°C by the end.

A typical October day in Nasu 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 15°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)
12113
22013
32013
42013
52013
62013
72012
81912
91912
101912
111912
121911
131911
141811
151811
161810
171810
181810
191810
201710
21179
22179
23179
24179
25178
26168
27168
28168
29168
30167
31167

How October really feels in Nasu

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.

Nasu 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 / -3°619.389.70.0
Feb / -2°568.86.210.60.2
Mar / 11113.35.111.71.8
Apr15° / 13013.11.112.94.1
May20° / 10°14913.90145.6
Jun23° / 15°17616.8014.55.3
Jul26° / 19°24021.1014.34.8
Aug27° / 20°19018.4013.45.0
Sep24° / 17°22716.4012.35.5
Oct18° / 10°185140115.2
Nov13° / 889.40.3103.5
Dec / -0°609.64.19.51.1

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 16% of October, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23664
33664
43664
53664
63763
73763
83862
93862
103961
113961
123961
134060
144060
154159
164159
174258
184357
194456
204456
214555
224654
234753
244852
254951
265149
275149
285248
295347
305446
315446

Chance of precipitation in October

Any precipitation

Nasu gets around 185 mm of rain over 14 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 44% and peaks near 50% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
150
250
350
449
549
649
749
848
948
1048
1147
1246
1346
1445
1545
1644
1744
1843
1943
2043
2142
2242
2341
2441
2540
2639
2739
2838
2937
3036
3135

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 76% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14336164
24536154
34736143
44935133
55234122
65433112
75632102
8583192
9612991
10642781
11672571
12702361
13722161
14751951
15771751
16801541
17811441
18851230
19861130
2089920
2190820
2291720
2393610
2494510
2594510
2695410
2795410
2896310
2997300
3097300
3198200

Wind in October

Winds average 7 km/h in October.

Across October, daily wind ranges from about 7 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
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
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 5:40 AM to 6:09 AM, and sunset from 5:17 PM to 4:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:405:17
211.65:415:16
311.55:425:14
411.55:435:13
511.55:435:11
611.45:445:10
711.45:455:08
811.35:465:07
911.35:475:05
1011.35:485:04
1111.25:495:03
1211.25:505:01
1311.15:515:00
1411.15:524:58
1511.15:534:57
1611.05:544:56
1711.05:554:54
1811.05:564:53
1910.95:574:52
2010.95:584:50
2110.85:594:49
2210.86:004:48
2310.86:014:47
2410.76:024:45
2510.76:034:44
2610.76:044:43
2710.66:054:42
2810.66:064:41
2910.66:074:40
3010.56:084:39
3110.56:094:38

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.92 kWh/m².

For context, solar energy here swings from a low near 2.25 kWh/m² to a high of 5.19 kWh/m² in May across the year — October's 2.92 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.1Moderate
43.1Moderate
53.1Moderate
63.0Moderate
73.0Moderate
83.0Moderate
93.0Moderate
103.0Moderate
113.0Moderate
123.0Moderate
133.0Moderate
143.0Moderate
152.9Moderate
162.9Moderate
172.9Moderate
182.9Moderate
192.9Moderate
202.9Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.8Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in October

Hazard calendar for Nasu

In seasonPeak

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

Nasu's rainy season runs March–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Nasu?

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

5.2
Sightseeing
4th-best month of the year
1.8
Beach & pool
6th-best month of the year

October is a reasonable time to visit Nasu for sightseeing.

What to pack for Nasu in October

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

In October, Nasu sees daytime highs around 18°C and nights near 10°C. Pack rain gear. About 14 days see rain.

rain gear

UV index in Nasu in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nasu peaks around July 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highModerateJul 20UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Low

Air quality in Nasu 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 Nasu is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1821 µg/m³Dec 189 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug13Moderate
Sep11Good
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Nasu?

Nasu sits at 37.0°N, 140.1°E, 362 m above sea level, in Japan. The nearest listed city is Nasushiobara, 8.0 km away.

Topography around Nasu

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

Within 3 km, the terrain around Nasu has only modest variations in elevation — a maximum elevation change of 143 m around an average of 386 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,727 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,550 m.

The land around Nasu is covered by trees (64%) and cropland (24%) within 3 km, trees (72%) within 16 km, and trees (77%) within 80 km.

3 km
143 m
16 km
1,727 m
80 km
2,550 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Nasushiobara 8.0 km · Kuroiso 9.0 km · Kumakura 14 km · Shirakawa 17 km · Ōtawara 20 km · Yabuki 26 km · Yaita 30 km · Ogawa 33 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 Nasu (37.0421°, 140.0938°, elevation 362 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. 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).