Kofu in Fall

In fall (September, October and November), Kofu sees average daytime highs around 16°C and overnight lows near 8°C, with 456 mm of precipitation over about 37 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.

Over the season highs ease from about 24°C in early September to 8°C by late November. The sky is clear or mostly clear about 33% of the time across fall, and the air most often feels dry.

Fall is Kofu's 2nd-best season to visit on our travel score. For the whole year in context, see Kofu's year-round climate.

Avg daytime high
16°C
2nd-warmest season
Avg overnight low
8°C
Precipitation
456 mm
37 wet days
Avg wind
5 km/h
Travel score
4.5
2nd-best season
Months
Sep · Oct · Nov

Temperature in Kofu in Fall

Average highAverage lowShaded bands: 10–90% of days

Over the season highs ease from about 24°C in early September to 8°C by late November.

A typical fall day in Kofu reaches about 16°C and drops to 8°C overnight. The warmest of the three months is September, the coolest November.

10°20°30°SepOctNov

How fall really feels in Kofu

Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 10 that feel at or below 0°C.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
10
wind chill below the day's low

The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.

Kofu 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -7°646.879.90.0
Feb / -6°727.96.510.70.0
Mar / -3°12512.87.611.70.9
Apr13° / 12112.62.112.93.5
May18° / 13012.80.113.95.4
Jun21° / 13°17716.3014.45.2
Jul25° / 17°19917.4014.25.4
Aug26° / 18°13916.8013.35.6
Sep22° / 15°18514.6012.25.7
Oct17° / 18613011.14.9
Nov11° / 859.20.510.12.8
Dec / -3°607.44.29.60.3

Cloud cover in Fall

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time across fall.

0%25%50%75%100%SepOctNov

Chance of precipitation in Fall

Any precipitationSnow

Kofu gets around 456 mm of rain and snow over 37 wet days across fall. The line is the day-by-day chance of measurable precipitation.

0%20%40%60%SepOctNov

Humidity in Fall

DryComfortableHumidMuggyOppressiveMiserable

Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

0%25%50%75%100%SepOctNov

Wind in Fall

Winds average 5 km/h across fall.

0246810SepOctNov

Sunrise & sunset in Fall

DaylightNight

Daylight runs from about 12 h 48 min in early September to 9 h 48 min by late November. The lit band spans sunrise to sunset each day.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMSepOctNov

Solar energy in Fall

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across fall, about 3.3 kWh/m².

012345SepOctNov
Planning a trip in fall

Is fall a good time to visit Kofu?

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.

4.5
Sightseeing
2nd-best month of the year
1.7
Beach & pool
2nd-best month of the year

fall is a reasonable time to visit Kofu for sightseeing.

What to pack for Kofu in Fall

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

In fall, Kofu sees daytime highs around 16°C and nights near 8°C. Pack a warm layer and rain gear. Worth having: light clothes. About 37 days see rain.

a warm layerrain gearlight clothes

Sea temperature near Kofu in Fall

The nearest coast averages about 23°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 60 km away) is warmest in August at about 27°C and coldest in February near 15°C.

It's comfortable for a long swim from May 30 to Nov 23 — about 5.9 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar15Cool
Apr17Cool
May19Cool
Jun22Refreshing
Jul24Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Kofu in Fall

LowModerateHighVery highExtreme

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 Kofu peaks around July 14 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highExtremeVery highModerateJul 14UV 11Dec 21UV 2
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul11Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Kofu in Fall

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.

Air quality in Kofu 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 1821 µg/m³Dec 1810 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug14Moderate
Sep13Moderate
Oct12Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Kofu?

Kofu sits at 35.7°N, 138.6°E, 275 m above sea level, in Japan. The nearest listed city is Shōwa, 5.0 km away.

Topography around Kofu

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

Within 3 km, the terrain around Kofu has significant variations in elevation — a maximum elevation change of 408 m around an average of 306 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,516 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,735 m.

The land around Kofu is covered by artificial surfaces (74%) and trees (21%) within 3 km, trees (56%) and artificial surfaces (23%) within 16 km, and trees (80%) within 80 km.

3 km
408 m
16 km
1,516 m
80 km
3,735 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Fall weather nearby: Shōwa 5.0 km · Kai 6.0 km · Isawa 6.0 km · Ryūō 6.0 km · Fuefuki 7.0 km · Chūō 10 km · Minami-Alps 11 km · Nirasaki 11 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 Kofu (35.6667°, 138.5667°, elevation 275 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.