Shibata weather in September

In September, Shibata sees average daytime highs of 25°C and overnight lows near 19°C, with 160 mm of rain across 15 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 23°C by the end. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Shibata's 5th-clearest and 9th-windiest month. For the whole year in context, see Shibata's year-round climate.

Daytime high
25°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
160 mm
15 wet days
Daylight
12 h 12 min
5:30 AM – 5:44 PM
Cloud cover
66%
5th clearest
Wind
9 km/h
9th windiest
Solar energy
3.95 kWh/m²
Travel score
5.7
out of 10

Shibata is city in Niigata Prefecture, Japan.

Density
181/km²
people per km²
Founded
1947

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 27°C in the first days to 23°C by the end.

A typical September day in Shibata reaches about 25°C in the afternoon and slips back to 19°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 29°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°35°151015202530
Avg high (°C)Avg low (°C)
12822
22822
32821
42721
52721
62721
72721
82721
92721
102620
112620
122620
132620
142620
152519
162519
172519
182519
192519
202418
212418
222418
232418
242417
252317
262317
272317
282317
292316
302216

How September really feels in Shibata

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.

Shibata weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 21726.720.49.70.0
Feb / 14821.516.410.50.1
Mar / 14520.49.211.71.2
Apr14° / 11514.71.1133.8
May20° / 13°12313.20145.8
Jun24° / 17°15513.5014.66.1
Jul27° / 22°27418.1014.45.0
Aug29° / 23°19415.6013.54.8
Sep25° / 19°16015012.35.7
Oct19° / 13°17016.10115.3
Nov13° / 19119.71.29.92.9
Dec / 2332512.19.40.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24555
34555
44555
54555
64456
74456
84456
94456
104357
114258
124159
134159
144159
153961
163961
173862
183862
193862
203862
213763
223763
233763
243763
253763
263763
273763
283961
293961
303862

Chance of precipitation in September

Any precipitation

Shibata gets around 160 mm of rain over 15 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 51% and peaks near 52% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
152
252
352
452
552
652
752
852
952
1052
1152
1252
1352
1452
1551
1651
1751
1850
1950
2050
2150
2250
2350
2450
2550
2650
2751
2851
2952
3052

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 46% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1031640383
2031741372
3041841352
4041941342
5152041322
6152141302
7162241292
8172340271
9282440251
10292539241
113102638221
123122737201
134132836191
145142835171
156152933151
167173032141
178183130121
189203228100
191022322790
201123332580
211325332360
221426332150
231627341940
241728341730
251830331530
262031331420
272132331220
282333321110
29253431910
30263529810

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
239calm
249calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 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 72 minutes over September. Sunrise moves from 5:17 AM to 5:42 AM, and sunset from 6:08 PM to 5:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:176:08
212.85:176:07
312.85:186:05
412.75:196:04
512.75:206:02
612.75:216:00
712.65:225:59
812.65:235:57
912.55:245:56
1012.55:245:54
1112.45:255:52
1212.45:265:51
1312.45:275:49
1412.35:285:47
1512.35:295:46
1612.25:305:44
1712.25:315:43
1812.25:325:41
1912.15:325:39
2012.15:335:38
2112.05:345:36
2212.05:355:34
2311.95:365:33
2411.95:375:31
2511.95:385:30
2611.85:395:28
2711.85:405:26
2811.75:415:25
2911.75:415:23
3011.75:425:22

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.95 kWh/m².

For context, solar energy here swings from a low near 1.67 kWh/m² to a high of 5.59 kWh/m² in May across the year — September's 3.95 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.4Bright
34.4Bright
44.4Bright
54.3Bright
64.3Bright
74.2Bright
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
233.7Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Hazard calendar for Shibata

In seasonPeak

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

Shibata 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 Shibata?

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

5.7
Sightseeing
3rd-best month of the year
5.2
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Shibata for sightseeing.

What to pack for Shibata in September

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

In September, Shibata sees daytime highs around 25°C and nights near 19°C. Pack rain gear. Worth having: light clothes. About 15 days see rain.

rain gearlight clothes

Sea temperature near Shibata 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 20 km away) is warmest in August at about 26°C and coldest in March near 9°C.

It's comfortable for a long swim from Jun 21 to Oct 29 — about 4.3 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar9Bracing
Apr11Bracing
May15Bracing
Jun20Cool
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov18Cool
Dec15Bracing

UV index in Shibata in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Shibata peaks around August 13 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 13UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep8Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Shibata 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 Shibata is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1421 µg/m³Dec 159 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May19Moderate
Jun15Moderate
Jul14Moderate
Aug12Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Shibata?

Shibata sits at 38.0°N, 139.3°E, 10 m above sea level, in Japan. The nearest listed city is Tainai, 14 km away.

Topography around Shibata

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

Within 3 km, the terrain around Shibata has only modest variations in elevation — a maximum elevation change of 76 m around an average of 12 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,413 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,110 m.

The land around Shibata is covered by artificial surfaces (45%) and cropland (38%) within 3 km, trees (42%) and cropland (28%) within 16 km, and trees (54%) and water (33%) within 80 km.

3 km
76 m
16 km
1,413 m
80 km
2,110 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Tainai 14 km · Suibara 15 km · Agano 16 km · Kameda-honchō 21 km · Niitsu-honchō 25 km · Niigata 26 km · Gosen 28 km · Muramatsu 32 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 Shibata (37.95°, 139.3333°, elevation 10 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).