Kodamachō-kodamaminami weather in September

In September, Kodamachō-kodamaminami sees average daytime highs of 26°C and overnight lows near 20°C, with 199 mm of rain across 16.1 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 28°C in the first days to 24°C by the end. The sky is clear or mostly clear about 23% 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 Kodamachō-kodamaminami's 10th-clearest and 10th-windiest month. For the whole year in context, see Kodamachō-kodamaminami's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
20°
10th coldest
Rainfall
199 mm
16.1 wet days
Daylight
12 h 12 min
5:31 AM – 5:45 PM
Cloud cover
68%
10th clearest
Wind
5 km/h
10th windiest
Solar energy
3.57 kWh/m²
Travel score
5.5
out of 10

Kodamachō-kodamaminami 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 28°C in the first days to 24°C by the end.

A typical September day in Kodamachō-kodamaminami reaches about 26°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 30°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)
12922
22822
32822
42822
52822
62822
72821
82821
92721
102721
112721
122721
132720
142720
152620
162620
172619
182619
192519
202519
212519
222518
232518
242418
252418
262418
272417
282417
292417
302317

How September really feels in Kodamachō-kodamaminami

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.

Kodamachō-kodamaminami 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 / 546.52.39.81.6
Feb / 537.22.510.62.0
Mar13° / 9911.91.511.73.4
Apr18° / 11111.70.212.95.5
May23° / 14°13212.9013.96.2
Jun25° / 18°17316.4014.45.4
Jul29° / 22°19917.8014.24.4
Aug30° / 23°15216.1013.44.2
Sep26° / 20°19916.1012.25.5
Oct21° / 14°18712.8011.16.0
Nov15° / 697.8010.15.1
Dec11° / 476.60.49.62.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13862
23763
33763
43862
53664
63664
73763
83763
93664
103565
113664
123664
133565
143565
153664
163664
173664
183565
193565
203565
213664
223664
233763
243763
253763
263763
273862
283862
293862
303961

Chance of precipitation in September

Any precipitation

Kodamachō-kodamaminami gets around 199 mm of rain over 16.1 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 54% and peaks near 57% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
157
257
357
457
557
657
757
857
956
1056
1156
1255
1355
1455
1554
1654
1754
1854
1953
2053
2153
2252
2352
2452
2551
2651
2751
2851
2950
3050

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 51% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1031337442
2031338432
3031438422
4141539402
5141639392
6151739371
7151839361
8161939341
9272039321
10272138301
11382238291
12392437270
134102536250
145102635230
156112834210
167122932190
178133131170
189153229150
1910163327140
2012173426120
2113183424110
221420352290
231521352080
241623361970
251724361760
261826361550
271927361440
282029351330
292230341130
302331341020

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

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 5:19 AM to 5:43 AM, and sunset from 6:07 PM to 5:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:196:07
212.85:206:06
312.75:216:04
412.75:216:03
512.75:226:01
612.65:236:00
712.65:245:58
812.55:255:57
912.55:255:55
1012.55:265:54
1112.45:275:52
1212.45:285:51
1312.35:295:49
1412.35:295:48
1512.35:305:46
1612.25:315:45
1712.25:325:43
1812.15:335:41
1912.15:335:40
2012.15:345:38
2112.05:355:37
2212.05:365:35
2312.05:375:34
2411.95:385:32
2511.95:385:31
2611.85:395:29
2711.85:405:28
2811.85:415:26
2911.75:425:25
3011.75:435:23

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.57 kWh/m².

For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 5.18 kWh/m² in May across the year — September's 3.57 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
14.0Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.7Moderate
103.7Moderate
113.7Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.5Moderate
163.5Moderate
173.5Moderate
183.5Moderate
193.4Moderate
203.4Moderate
213.4Moderate
223.4Moderate
233.3Moderate
243.3Moderate
253.3Moderate
263.3Moderate
273.3Moderate
283.2Moderate
293.2Moderate
303.2Moderate
Planning a trip in September

Is September a good time to visit Kodamachō-kodamaminami?

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

5.5
Sightseeing
3rd-best month of the year
5.3
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Kodamachō-kodamaminami for sightseeing.

What to pack for Kodamachō-kodamaminami in September

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

In September, Kodamachō-kodamaminami sees daytime highs around 26°C and nights near 20°C. Pack rain gear. Worth having: light clothes. About 16 days see rain.

rain gearlight clothes

UV index in Kodamachō-kodamaminami in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kodamachō-kodamaminami peaks around July 15 at about 10 (very high) — 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 highModerateJul 15UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Kodamachō-kodamaminami 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 Kodamachō-kodamaminami is worst in April — around 26 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1426 µg/m³Dec 1814 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb21Moderate
Mar25Moderate
Apr26Moderate
May24Moderate
Jun20Moderate
Jul17Moderate
Aug16Moderate
Sep16Moderate
Oct16Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Kodamachō-kodamaminami?

Kodamachō-kodamaminami sits at 36.2°N, 139.1°E, 106 m above sea level, in Japan. The nearest listed city is Ishigami, 7.0 km away.

Topography around Kodamachō-kodamaminami

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

Within 3 km, the terrain around Kodamachō-kodamaminami has significant variations in elevation — a maximum elevation change of 277 m around an average of 117 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,006 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,855 m.

The land around Kodamachō-kodamaminami is covered by artificial surfaces (31%), trees (30%) and cropland (29%) within 3 km, trees (44%) and artificial surfaces (29%) within 16 km, and trees (64%) and artificial surfaces (20%) within 80 km.

3 km
277 m
16 km
1,006 m
80 km
2,855 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Ishigami 7.0 km · Honjō 8.0 km · Fujioka 9.0 km · Yorii 10 km · Tamamura 13 km · Fukayachō 14 km · Sakai-nakajima 14 km · Yoshii 15 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 Kodamachō-kodamaminami (36.185°, 139.1319°, elevation 106 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. 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).