Nikko weather in October

In October, Nikko sees average daytime highs of 16°C and overnight lows near 9°C, with 198 mm of precipitation across 16.6 wet days and about 11.1 hours of daylight. It is the 6th-warmest and 5th-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 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 Nikko's 7th-clearest and 8th-windiest month. For the whole year in context, see Nikko's year-round climate.

Daytime high
16°
6th warmest
Overnight low
7th coldest
Precipitation
198 mm
16.6 wet days
Daylight
11 hours
5:55 AM – 4:58 PM
Cloud cover
64%
7th clearest
Wind
5 km/h
8th windiest
Solar energy
2.98 kWh/m²
Travel score
4.1
out of 10

Nikko is city in Tochigi prefecture, Japan.

Density
54/km²
people per km²
Founded
~800 CE

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 Nikko reaches about 16°C in the afternoon and slips back to 9°C overnight — a 7°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 6°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11812
21812
31811
41811
51811
61811
71711
81711
91710
101710
111710
121710
13169
14169
15169
16169
17169
18158
19158
20158
21158
22157
23147
24147
25147
26146
27146
28146
29136
30136
31135

How October really feels in Nikko

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.

Nikko 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 / -6°629.611.69.80.0
Feb / -5°589.59.610.60.0
Mar / -2°112149.611.70.5
Apr12° / 13715.12.812.92.8
May17° / 17617.10.113.94.5
Jun20° / 14°22822.2014.54.3
Jul24° / 18°30525.4014.34.3
Aug25° / 19°25925013.44.5
Sep21° / 15°26920.1012.24.7
Oct16° / 19816.60.111.14.1
Nov10° / 849.41.1102.3
Dec / -3°5910.17.89.50.1

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 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 (%)
13466
23466
33565
43565
53565
63664
73664
83664
93763
103862
113862
123862
133862
143961
154159
164258
174258
184456
194456
204555
214654
224654
234852
244951
255050
265149
275248
285347
295446
305545
315644

Chance of precipitation in October

Any precipitation

Nikko gets around 198 mm of rain and snow over 16.6 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 62% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
162
262
361
461
560
660
759
859
958
1057
1156
1256
1354
1454
1553
1652
1751
1850
1950
2049
2149
2248
2348
2447
2546
2645
2744
2843
2942
3041
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 86% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1632881
2652771
3672670
4702460
5722350
6732250
7752140
8771940
9781840
10811630
11821530
12841330
13851230
14871120
1589920
1690820
1791720
1892620
1994510
2094510
2195410
2296310
2396310
2498200
2598200
2698200
2799100
2899100
2999100
3099100
3199100

Wind in October

Winds average 5 km/h in October.

Across October, daily wind ranges from about 5 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
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
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 5:42 AM to 6:10 AM, and sunset from 5:19 PM to 4:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:425:19
211.65:435:18
311.55:435:16
411.55:445:15
511.55:455:13
611.45:465:12
711.45:475:10
811.45:485:09
911.35:495:08
1011.35:505:06
1111.25:515:05
1211.25:525:03
1311.25:525:02
1411.15:535:01
1511.15:544:59
1611.05:554:58
1711.05:564:57
1811.05:574:55
1910.95:584:54
2010.95:594:53
2110.96:004:51
2210.86:014:50
2310.86:024:49
2410.76:034:48
2510.76:044:47
2610.76:054:45
2710.66:064:44
2810.66:074:43
2910.66:084:42
3010.56:094:41
3110.56:104:40

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.98 kWh/m².

For context, solar energy here swings from a low near 2.26 kWh/m² to a high of 5.28 kWh/m² in May across the year — October's 2.98 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.2Moderate
33.2Moderate
43.1Moderate
53.1Moderate
63.1Moderate
73.1Moderate
83.1Moderate
93.1Moderate
103.1Moderate
113.0Moderate
123.0Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
183.0Moderate
193.0Moderate
203.0Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.9Moderate
282.9Moderate
292.9Moderate
302.8Moderate
312.8Moderate
Planning a trip in October

Hazard calendar for Nikko

In seasonPeak

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

Nikko's rainy season runs May–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 Nikko?

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
0.6
Beach & pool
6th-best month of the year

October is a reasonable time to visit Nikko for sightseeing.

What to pack for Nikko in October

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

In October, Nikko sees daytime highs around 16°C and nights near 9°C. Pack rain gear. Worth having: a warm layer. About 17 days see rain.

rain geara warm layer

UV index in Nikko 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 Nikko peaks around July 18 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 highModerateJul 18UV 10Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5High
Apr7High
May9Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Nikko 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 Nikko is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 179 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug13Moderate
Sep11Good
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Nikko?

Nikko sits at 36.8°N, 139.6°E, 555 m above sea level, in Japan. The nearest listed city is Imaichi, 7.0 km away.

Topography around Nikko

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

Within 3 km, the terrain around Nikko has large variations in elevation — a maximum elevation change of 635 m around an average of 673 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,272 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,551 m.

The land around Nikko is covered by trees (88%) within 3 km, trees (87%) within 16 km, and trees (72%) within 80 km.

3 km
635 m
16 km
2,272 m
80 km
2,551 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Imaichi 7.0 km · Kanuma 25 km · Yaita 29 km · Utsunomiya 31 km · Ujiie 32 km · Sakura 33 km · Hōshakuji 35 km · Ōtawara 39 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 Nikko (36.75°, 139.6167°, elevation 555 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).