Furukawa weather in September

In September, Furukawa sees average daytime highs of 22°C and overnight lows near 14°C, with 216 mm of rain across 16 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 20°C by the end. The sky is clear or mostly clear about 19% of the time in September, and the air most often feels humid.

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 Furukawa's 8th-clearest and 9th-windiest month. For the whole year in context, see Furukawa's year-round climate.

Daytime high
22°
3rd warmest
Overnight low
14°
10th coldest
Rainfall
216 mm
16 wet days
Daylight
12 h 12 min
5:39 AM – 5:52 PM
Cloud cover
69%
8th clearest
Wind
6 km/h
9th windiest
Solar energy
4.02 kWh/m²
Travel score
5.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 20°C by the end.

A typical September day in Furukawa reaches about 22°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 25°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12417
22417
32416
42416
52416
62416
72316
82316
92316
102315
112315
122315
132215
142215
152214
162214
172214
182214
192114
202113
212113
222113
232113
242012
252012
262012
272012
282012
291911
301911

How September really feels in Furukawa

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.

Furukawa weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -7°15521.422.19.80.0
Feb / -6°13317.917.210.60.0
Mar / -3°17217.813.311.70.3
Apr12° / 15815.53.812.92.8
May18° / 16314.80.213.95.0
Jun21° / 13°22017.7014.45.0
Jul25° / 18°27821.1014.25.0
Aug26° / 18°17918.8013.45.3
Sep22° / 14°21616012.25.5
Oct16° / 18214.50.211.14.6
Nov10° / 14115.94.810.11.9
Dec / -4°15920.616.79.60.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 63%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13862
23862
33862
43862
53862
63862
73862
83763
93961
103961
113862
123862
133961
143763
153763
163763
173664
183763
193664
203664
213565
223565
233565
243565
253565
263565
273565
283664
293565
303565

Chance of precipitation in September

Any precipitation

Furukawa gets around 216 mm of rain over 16 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 54% and peaks near 60% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
160
259
359
459
559
658
758
857
957
1056
1155
1255
1354
1454
1553
1652
1752
1852
1951
2051
2151
2250
2350
2450
2550
2650
2750
2851
2951
3051

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15235220
25245219
36245218
47255117
58265016
69265015
710274914
811284813
913294712
1014304611
1116304410
121831439
132031418
142232397
152532376
162832346
173032325
183333304
193632284
203932253
214232233
224531212
234831192
245130172
255429152
265729131
275928121
286128101
29632791
30662671

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 5:27 AM to 5:50 AM, and sunset from 6:15 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:276:15
212.85:286:14
312.75:286:12
412.75:296:11
512.75:306:09
612.65:316:08
712.65:326:06
812.55:326:05
912.55:336:03
1012.55:346:02
1112.45:356:00
1212.45:365:59
1312.35:365:57
1412.35:375:55
1512.35:385:54
1612.25:395:52
1712.25:405:51
1812.15:405:49
1912.15:415:48
2012.15:425:46
2112.05:435:45
2212.05:445:43
2312.05:445:42
2411.95:455:40
2511.95:465:38
2611.85:475:37
2711.85:485:35
2811.85:495:34
2911.75:495:32
3011.75:505:31

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.02 kWh/m².

For context, solar energy here swings from a low near 2.12 kWh/m² to a high of 5.58 kWh/m² in May across the year — September's 4.02 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.3Bright
54.3Bright
64.3Bright
74.2Bright
84.2Bright
94.2Bright
104.1Bright
114.1Bright
124.1Bright
134.0Bright
144.0Bright
154.0Bright
164.0Moderate
174.0Moderate
183.9Moderate
193.9Moderate
203.9Moderate
213.9Moderate
223.9Moderate
233.8Moderate
243.8Moderate
253.8Moderate
263.8Moderate
273.7Moderate
283.7Moderate
293.7Moderate
303.7Moderate
Planning a trip in September

Is September a good time to visit Furukawa?

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
3.8
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Furukawa for sightseeing.

What to pack for Furukawa in September

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

In September, Furukawa sees daytime highs around 22°C and nights near 14°C. Pack rain gear. About 16 days see rain.

rain gear

Sea temperature near Furukawa in September

The nearest coast averages about 25°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 66 km away) is warmest in August at about 27°C and coldest in March near 11°C.

It's comfortable for a long swim from Jun 17 to Nov 3 — about 4.6 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar11Bracing
Apr12Bracing
May16Cool
Jun20Cool
Jul24Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Furukawa 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 Furukawa peaks around July 17 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 17UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May9Very high
Jun10Very high
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Furukawa 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 Furukawa is worst in April — around 19 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1719 µg/m³Dec 1510 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar18Moderate
Apr19Moderate
May18Moderate
Jun16Moderate
Jul13Moderate
Aug12Good
Sep11Good
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Furukawa?

Furukawa sits at 36.2°N, 137.2°E, 491 m above sea level, in Japan. The nearest listed city is Hida, 2.0 km away.

Topography around Furukawa

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

Within 3 km, the terrain around Furukawa has significant variations in elevation — a maximum elevation change of 552 m around an average of 625 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,179 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,123 m.

The land around Furukawa is covered by trees (67%) within 3 km, trees (90%) within 16 km, and trees (80%) within 80 km.

3 km
552 m
16 km
1,179 m
80 km
3,123 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Hida 2.0 km · Takayama 13 km · Yatsuomachi-higashikumisaka 37 km · Nanto 40 km · Nanto-shi 45 km · Fukumitsu 46 km · Tonami 48 km · Gero 48 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 Furukawa (36.2333°, 137.1833°, elevation 491 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. 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).