Ebetsu weather in September

In September, Ebetsu sees average daytime highs of 21°C and overnight lows near 14°C, with 138 mm of rain across 13.9 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 19°C by the end. The sky is clear or mostly clear about 27% of the time in September, and the air most often feels dry.

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 Ebetsu's 6th-clearest and 9th-windiest month. For the whole year in context, see Ebetsu's year-round climate.

Daytime high
21°
3rd warmest
Overnight low
14°
10th coldest
Rainfall
138 mm
13.9 wet days
Daylight
12 h 18 min
5:19 AM – 5:37 PM
Cloud cover
64%
6th clearest
Wind
9 km/h
9th windiest
Solar energy
3.71 kWh/m²
Travel score
5.8
out of 10

Ebetsu is city in Hokkaidō, Japan.

Density
715/km²
people per km²
Founded
1954

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 23°C in the first days to 19°C by the end.

A typical September day in Ebetsu reaches about 21°C in the afternoon and slips back to 14°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 24°C. Set against its neighbours, September runs about 3°C cooler than August and about 6°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12417
22317
32317
42317
52317
62316
72316
82316
92316
102216
112216
122215
132215
142215
152115
162114
172114
182114
192114
202113
212013
222013
232013
242012
252012
261912
271912
281912
291911
301911

How September really feels in Ebetsu

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.

Ebetsu weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-2° / -8°41811.29.20.0
Feb-1° / -8°3889.910.20.0
Mar / -4°5510.38.911.60.1
Apr11° / 6611.12.613.12.4
May16° / 8411.40.114.44.7
Jun19° / 13°7610.1015.15.9
Jul23° / 17°11912.2014.96.3
Aug24° / 19°17113.2013.86.2
Sep21° / 14°13813.9012.35.8
Oct15° / 8711.80.110.84.5
Nov / 7512.64.39.51.3
Dec / -4°6210.212.88.90.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23763
33862
43862
53862
63961
73862
83961
93961
104060
114159
124159
134258
144357
154357
164456
174456
184456
194555
204555
214654
224753
234654
244753
254753
264753
274852
284852
294951
304951

Chance of precipitation in September

Any precipitation

Ebetsu gets around 138 mm of rain over 13.9 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 46% and peaks near 48% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
143
243
344
444
545
645
746
846
947
1047
1147
1248
1348
1448
1548
1648
1747
1847
1947
2047
2147
2247
2347
2446
2546
2646
2745
2845
2944
3044

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
172337276
282437256
392537246
4102636226
5112736215
6122835205
7142934185
8153033174
9173132164
10193231154
11213230143
12243328123
13263426113
14293424102
1532342392
1635352182
1737351982
1840341771
1943341561
2046341451
2149331251
2251331141
2354321031
245632831
256031720
266230620
276429610
286628510
296926410
307125400

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 5:03 AM to 5:36 AM, and sunset from 6:04 PM to 5:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:036:04
213.05:046:03
312.95:056:01
412.95:065:59
512.85:075:57
612.85:085:55
712.75:095:54
812.75:105:52
912.65:125:50
1012.65:135:48
1112.55:145:46
1212.55:155:44
1312.45:165:42
1412.45:175:41
1512.35:185:39
1612.35:195:37
1712.25:215:35
1812.25:225:33
1912.15:235:31
2012.15:245:29
2112.05:255:27
2212.05:265:26
2311.95:275:24
2411.95:295:22
2511.85:305:20
2611.85:315:18
2711.75:325:16
2811.75:335:14
2911.65:345:13
3011.65:365:11

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.71 kWh/m².

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 5.43 kWh/m² in May across the year — September's 3.71 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.0Bright
24.0Bright
34.0Moderate
44.0Moderate
53.9Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.8Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.7Moderate
153.7Moderate
163.7Moderate
173.7Moderate
183.6Moderate
193.6Moderate
203.6Moderate
213.6Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.4Moderate
283.4Moderate
293.4Moderate
303.3Moderate
Planning a trip in September

Hazard calendar for Ebetsu

In seasonPeak

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

Ebetsu sits in the Pacific typhoon belt; the season peaks July–October.

Ebetsu's rainy season runs May–May, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Ebetsu?

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

5.8
Sightseeing
4th-best month of the year
3.7
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Ebetsu for sightseeing.

What to pack for Ebetsu in September

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

In September, Ebetsu sees daytime highs around 21°C and nights near 14°C. Pack rain gear. About 14 days see rain.

rain gear

Sea temperature near Ebetsu in September

The nearest coast averages about 21°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 33 km away) is warmest in August at about 22°C and coldest in February near 5°C.

It's comfortable for a long swim from Jul 31 to Sep 22 — about 1.8 months when the water holds above 20°C.

10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan7Bracing
Feb5Bracing
Mar5Bracing
Apr7Bracing
May10Bracing
Jun14Bracing
Jul19Cool
Aug22Refreshing
Sep21Refreshing
Oct17Cool
Nov13Bracing
Dec9Bracing

UV index in Ebetsu 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 Ebetsu peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highHighModerateLowAug 18UV 8Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar3Moderate
Apr6High
May7Very high
Jun7High
Jul5Moderate
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Ebetsu 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 Ebetsu is worst in April — around 19 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1119 µg/m³Dec 158 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar19Moderate
Apr19Moderate
May18Moderate
Jun13Moderate
Jul12Good
Aug10Good
Sep9Good
Oct11Good
Nov9Good
Dec8Good
Location & terrain

Where is Ebetsu?

Ebetsu sits at 43.1°N, 141.6°E, 12 m above sea level, in Japan. The nearest listed city is Tōbetsu, 12 km away.

Topography around Ebetsu

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

Within 3 km, the terrain around Ebetsu has only modest variations in elevation — a maximum elevation change of 40 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 136 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,859 m.

The land around Ebetsu is covered by artificial surfaces (44%) and cropland (31%) within 3 km, cropland (55%) and artificial surfaces (21%) within 16 km, and trees (61%) and water (22%) within 80 km.

3 km
40 m
16 km
136 m
80 km
1,859 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Tōbetsu 12 km · Kitahiroshima 15 km · Sapporo 17 km · Iwamizawa 20 km · Ishikari 22 km · Eniwa 24 km · Chitose 33 km · Bibai 35 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 Ebetsu (43.1081°, 141.5506°, elevation 12 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).