Shizunai-furukawachō weather in September

In September, Shizunai-furukawachō sees average daytime highs of 20°C and overnight lows near 18°C, with 155 mm of rain across 12.4 wet days and about 12.3 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 18°C by the end. The sky is clear or mostly clear about 31% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Shizunai-furukawachō's 8th-clearest and 8th-windiest month. For the whole year in context, see Shizunai-furukawachō's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
18°
11th coldest
Rainfall
155 mm
12.4 wet days
Daylight
12 h 18 min
5:16 AM – 5:33 PM
Cloud cover
62%
8th clearest
Wind
18 km/h
8th windiest
Solar energy
3.84 kWh/m²
Travel score
5.8
out of 10

Shizunai-furukawachō is human settlement in Japan.

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 21°C in the first days to 18°C by the end.

A typical September day in Shizunai-furukawachō reaches about 20°C in the afternoon and slips back to 18°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 22°C. Set against its neighbours, September runs about 1°C cooler than August and about 4°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12119
22119
32119
42119
52119
62119
72119
82119
92119
102119
112018
122018
132018
142018
152018
162018
172018
182018
192017
201917
211917
221917
231917
241917
251916
261916
271816
281816
291816
301816

How September really feels in Shizunai-furukawachō

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.

Shizunai-furukawachō weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°6412.913.99.30.0
Feb / -3°479.910.810.30.0
Mar / -1°659.66.411.60.0
Apr / 8510.51.213.10.2
May / 12111.4014.42.0
Jun14° / 12°95100153.9
Jul18° / 17°15413.4014.85.2
Aug21° / 19°17113013.75.9
Sep20° / 18°15512.4012.35.8
Oct15° / 12°13012.9010.84.5
Nov / 10715.82.19.61.7
Dec / 9416.211.190.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 56%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24060
34060
44060
53961
64060
74060
84060
94159
104159
114159
124258
134357
144357
154456
164456
174456
184555
194555
204654
214753
224753
234852
244852
254951
264951
274852
284852
294951
304951

Chance of precipitation in September

Any precipitation

Shizunai-furukawachō gets around 155 mm of rain over 12.4 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 42% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
142
242
343
443
543
643
743
843
943
1043
1143
1243
1342
1442
1542
1641
1741
1841
1940
2040
2140
2240
2340
2440
2541
2641
2741
2841
2941
3041

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 18% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
152034348
252134338
362234318
462334307
572334297
672434277
782534267
892634246
9112733236
10122833216
11142933205
12163032185
13173031174
14203131154
15223130143
16243229123
17263228113
1829332792
1931332682
2033332472
2136332361
2238332251
2340332151
2443332041
2545331831
2647331720
2749321620
2852321510
2954311410
3057301210

Wind in September

Winds average 18 km/h in September.

Across September, daily wind ranges from about 17 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2620light breeze
2720light breeze
2820light breeze
2920breezy
3020breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 5:00 AM to 5:32 AM, and sunset from 6:00 PM to 5:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:006:00
213.05:015:59
312.95:025:57
412.95:035:55
512.85:045:53
612.85:065:52
712.75:075:50
812.75:085:48
912.65:095:46
1012.65:105:44
1112.55:115:42
1212.55:125:41
1312.45:135:39
1412.45:145:37
1512.35:155:35
1612.35:165:33
1712.25:185:31
1812.25:195:30
1912.15:205:28
2012.15:215:26
2112.05:225:24
2212.05:235:22
2311.95:245:20
2411.95:255:19
2511.85:265:17
2611.85:275:15
2711.75:295:13
2811.75:305:11
2911.65:315:10
3011.65:325:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.84 kWh/m².

For context, solar energy here swings from a low near 1.65 kWh/m² to a high of 5.41 kWh/m² in May across the year — September's 3.84 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.0Bright
54.0Bright
64.0Bright
74.0Moderate
84.0Moderate
94.0Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.9Moderate
153.8Moderate
163.8Moderate
173.8Moderate
183.8Moderate
193.8Moderate
203.7Moderate
213.7Moderate
223.7Moderate
233.7Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Hazard calendar for Shizunai-furukawachō

In seasonPeak

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

Shizunai-furukawachō 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 Shizunai-furukawachō?

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

5.8
Sightseeing
2nd-best month of the year
2.9
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Shizunai-furukawachō for sightseeing.

What to pack for Shizunai-furukawachō in September

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

In September, Shizunai-furukawachō sees daytime highs around 20°C and nights near 18°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Shizunai-furukawachō in September

The nearest coast averages about 20°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 20°C and coldest in March near 3°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan6Bracing
Feb3Bracing
Mar3Bracing
Apr5Bracing
May8Bracing
Jun12Bracing
Jul17Cool
Aug20Cool
Sep20Cool
Oct17Cool
Nov13Bracing
Dec10Bracing

UV index in Shizunai-furukawachō in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Shizunai-furukawachō peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 18UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr6High
May8Very high
Jun7High
Jul5Moderate
Aug9Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Shizunai-furukawachō 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 Shizunai-furukawachō is worst in April — around 16 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1216 µg/m³Dec 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar15Moderate
Apr16Moderate
May14Moderate
Jun9Good
Jul8Good
Aug8Good
Sep8Good
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Shizunai-furukawachō?

Shizunai-furukawachō sits at 42.3°N, 142.4°E, 4 m above sea level, in Japan. The nearest listed city is Tomakomai, 71 km away.

Topography around Shizunai-furukawachō

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

Within 3 km, the terrain around Shizunai-furukawachō has only modest variations in elevation — a maximum elevation change of 146 m around an average of 26 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 709 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,014 m.

The land around Shizunai-furukawachō is covered by water (43%) and trees (22%) within 3 km, water (51%) and trees (34%) within 16 km, and trees (55%) and water (35%) within 80 km.

3 km
146 m
16 km
709 m
80 km
2,014 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Tomakomai 71 km · Chitose 80 km · Memuro-minami 84 km · Shiraoi 87 km · Eniwa 90 km · Obihiro 94 km · Kitahiroshima 97 km · Noboribetsu 98 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 Shizunai-furukawachō (42.3339°, 142.3669°, elevation 4 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).