Nikko in Fall
In fall (September, October and November), Nikko sees average daytime highs around 16°C and overnight lows near 9°C, with 550 mm of precipitation over about 46 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 23°C in early September to 8°C by late November. The sky is clear or mostly clear about 26% of the time across fall, and the air most often feels dry.
Fall is Nikko's 2nd-best season to visit on our travel score. For the whole year in context, see Nikko's year-round climate.
- Avg daytime high
- 16°C
- 2nd-warmest season
- Avg overnight low
- 9°C
- Precipitation
- 550 mm
- 46 wet days
- Avg wind
- 5 km/h
- Travel score
- 3.7
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Nikko in Fall
Over the season highs ease from about 23°C in early September to 8°C by late November.
A typical fall day in Nikko reaches about 16°C and drops to 9°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Nikko
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 12 that feel at or below 0°C.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Nikko weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 1° / -6° | 62 | 9.6 | 11.6 | 9.8 | 0.0 |
| Feb | 2° / -5° | 58 | 9.5 | 9.6 | 10.6 | 0.0 |
| Mar | 6° / -2° | 112 | 14 | 9.6 | 11.7 | 0.5 |
| Apr | 12° / 3° | 137 | 15.1 | 2.8 | 12.9 | 2.8 |
| May | 17° / 9° | 176 | 17.1 | 0.1 | 13.9 | 4.5 |
| Jun | 20° / 14° | 228 | 22.2 | 0 | 14.5 | 4.3 |
| Jul | 24° / 18° | 305 | 25.4 | 0 | 14.3 | 4.3 |
| Aug | 25° / 19° | 259 | 25 | 0 | 13.4 | 4.5 |
| Sep | 21° / 15° | 269 | 20.1 | 0 | 12.2 | 4.7 |
| Oct | 16° / 9° | 198 | 16.6 | 0.1 | 11.1 | 4.1 |
| Nov | 10° / 2° | 84 | 9.4 | 1.1 | 10 | 2.3 |
| Dec | 4° / -3° | 59 | 10.1 | 7.8 | 9.5 | 0.1 |
Cloud cover in Fall
The sky is clear or mostly clear about 26% of the time across fall.
Chance of precipitation in Fall
Nikko gets around 550 mm of rain and snow over 46 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 5 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 48 min in early September to 9 h 42 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 3.0 kWh/m².
Hazard calendar for Nikko
In fall, Nikko overlaps 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.
Is fall a good time to visit Nikko?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Nikko.
What to pack for Nikko in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Nikko sees daytime highs around 16°C and nights near 9°C. Pack a warm layer and rain gear. About 46 days see rain.
UV index in Nikko in Fall
Clear-sky midday UV across fall averages 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 4 | 5 | 7 | 9 | 9 | 10 | 9 | 9 | 6 | 3 | 2 |
| Level | Moderate | Moderate | High | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 4 | Moderate |
| Mar | 5 | High |
| Apr | 7 | High |
| May | 9 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 9 | Very high |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Nikko in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 10 | 13 | 19 | 21 | 20 | 16 | 14 | 13 | 11 | 11 | 10 | 9 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 13 | Moderate |
| Mar | 19 | Moderate |
| Apr | 21 | Moderate |
| May | 20 | Moderate |
| Jun | 16 | Moderate |
| Jul | 14 | Moderate |
| Aug | 13 | Moderate |
| Sep | 11 | Good |
| Oct | 11 | Good |
| Nov | 10 | Good |
| Dec | 9 | Good |
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.
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
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.