Fuji weather in September

In September, Fuji sees average daytime highs of 24°C and overnight lows near 18°C, with 279 mm of rain across 16.5 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 22°C by the end. The sky is clear or mostly clear about 17% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Fuji's 9th-clearest and 9th-windiest month. For the whole year in context, see Fuji's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
279 mm
16.5 wet days
Daylight
12 h 12 min
5:33 AM – 5:46 PM
Cloud cover
71%
9th clearest
Wind
6 km/h
9th windiest
Solar energy
3.93 kWh/m²
Travel score
5.5
out of 10

Fuji is city in Shizuoka Prefecture, Japan.

Founded
1966

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 22°C by the end.

A typical September day in Fuji reaches about 24°C in the afternoon and slips back to 18°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 28°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12620
22620
32620
42620
52620
62620
72620
82620
92519
102519
112519
122519
132519
142519
152418
162418
172418
182418
192418
202418
212317
222317
232317
242317
252317
262216
272216
282216
292216
302216

How September really feels in Fuji

Once humidity and wind are folded in, September 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

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Fuji weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°10211.14.99.90.8
Feb / -1°11612.15.910.71.0
Mar11° / 20216.63.611.72.2
Apr16° / 19414.90.512.94.2
May20° / 12°19414.9013.85.4
Jun23° / 16°25718014.35.1
Jul27° / 20°27519.5014.14.9
Aug27° / 21°19718.6013.35.1
Sep24° / 18°27916.5012.25.5
Oct19° / 13°26515.9011.15.3
Nov14° / 14812.70.110.24.0
Dec10° / 10110.91.19.72.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23763
33664
43664
53565
63565
73565
83466
93466
103367
113367
123268
133367
143268
153169
163070
173070
182971
192971
203070
212971
222971
232971
242971
252971
263070
273070
283070
293169
303169

Chance of precipitation in September

Any precipitation

Fuji gets around 279 mm of rain over 16.5 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 56% and peaks near 57% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
157
257
357
457
557
657
756
856
956
1056
1156
1256
1355
1455
1555
1655
1755
1855
1954
2054
2154
2254
2354
2454
2555
2655
2755
2856
2956
3057

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 38% of days. Sticky, muggy-or-worse air turns up on roughly 47% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
103195226
203205324
303205423
404215421
505225419
605235418
716235416
818245215
919255114
10110265112
11211275011
12312274810
1331328479
1441429458
1551630437
1661730416
1771831395
1882032364
1992132344
20112233313
21122334283
22132434262
23152534242
24162635212
25172835192
26182935171
27193034151
28203134141
29213333121
30233432111

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over September. Sunrise moves from 5:22 AM to 5:44 AM, and sunset from 6:08 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:226:08
212.75:226:07
312.75:236:05
412.75:246:04
512.65:256:03
612.65:256:01
712.65:266:00
812.55:275:58
912.55:285:57
1012.45:295:55
1112.45:295:54
1212.45:305:52
1312.35:315:51
1412.35:325:49
1512.35:325:48
1612.25:335:46
1712.25:345:45
1812.15:355:43
1912.15:355:42
2012.15:365:40
2112.05:375:39
2212.05:385:37
2312.05:385:36
2411.95:395:34
2511.95:405:33
2611.85:415:31
2711.85:425:30
2811.85:425:28
2911.75:435:27
3011.75:445:25

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.93 kWh/m².

For context, solar energy here swings from a low near 2.52 kWh/m² to a high of 5.34 kWh/m² in May across the year — September's 3.93 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.4Bright
34.4Bright
44.4Bright
54.3Bright
64.3Bright
74.3Bright
84.2Bright
94.2Bright
104.1Bright
114.1Bright
124.0Bright
134.0Bright
144.0Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.8Moderate
213.7Moderate
223.7Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.4Moderate
Planning a trip in September

Hazard calendar for Fuji

In seasonPeak

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

Fuji 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 September a good time to visit Fuji?

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

5.5
Sightseeing
1st-best month of the year
4.7
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Fuji for sightseeing.

What to pack for Fuji in September

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

In September, Fuji sees daytime highs around 24°C and nights near 18°C. Pack rain gear. Worth having: light clothes. About 17 days see rain.

rain gearlight clothes

Sea temperature near Fuji in September

The nearest coast averages about 26°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore 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 Fuji in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Fuji peaks around July 19 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 19UV 10Dec 23UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May9Very high
Jun10Very high
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Fuji in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Fuji is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1623 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb20Moderate
Mar20Moderate
Apr23Moderate
May20Moderate
Jun17Moderate
Jul13Moderate
Aug12Good
Sep12Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Fuji?

Fuji sits at 35.2°N, 138.7°E, 9 m above sea level, in Japan. The nearest listed city is Fujinomiya, 8.0 km away.

Topography around Fuji

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

Within 3 km, the terrain around Fuji has only modest variations in elevation — a maximum elevation change of 187 m around an average of 36 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,498 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,736 m.

The land around Fuji is covered by artificial surfaces (83%) within 3 km, trees (50%) and water (30%) within 16 km, and trees (58%) and water (32%) within 80 km.

3 km
187 m
16 km
1,498 m
80 km
3,736 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Fujinomiya 8.0 km · Numazu 18 km · Nakatogari 20 km · Fushimi 20 km · Susono 20 km · Mishima 22 km · Kamizawa 26 km · Izunokuni 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 Fuji (35.1667°, 138.6833°, elevation 9 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).