Tondabayashichō weather in September

In September, Tondabayashichō sees average daytime highs of 29°C and overnight lows near 21°C, with 158 mm of rain across 11.8 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 31°C in the first days to 26°C by the end. The sky is clear or mostly clear about 31% 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 Tondabayashichō's 9th-clearest and 9th-windiest month. For the whole year in context, see Tondabayashichō's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
21°
10th coldest
Rainfall
158 mm
11.8 wet days
Daylight
12 h 12 min
5:46 AM – 5:58 PM
Cloud cover
61%
9th clearest
Wind
7 km/h
9th windiest
Solar energy
4.21 kWh/m²
Travel score
5.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 31°C in the first days to 26°C by the end.

A typical September day in Tondabayashichō reaches about 29°C in the afternoon and slips back to 21°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°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)
13124
23123
33123
43123
53123
63123
73123
83022
93022
103022
113022
123022
132922
142921
152921
162921
172921
182820
192820
202820
212820
222820
232719
242719
252719
262719
272619
282618
292618
302618

How September really feels in Tondabayashichō

Once humidity and wind are folded in, September averages 8 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
8
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Tondabayashichō 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 / 648.11101.9
Feb10° / 698.61.110.72.3
Mar14° / 11211.60.111.73.8
Apr19° / 10°11410.4012.86.0
May24° / 15°13210.4013.86.7
Jun27° / 20°19913.6014.35.5
Jul31° / 24°17213.8014.14.1
Aug33° / 25°10010.4013.33.5
Sep29° / 21°15811.8012.25.3
Oct23° / 14°15610011.16.8
Nov17° / 848010.25.7
Dec12° / 688.40.29.73.2

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 15% of September, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24753
34753
44753
54753
64753
74753
84852
94753
104753
114753
124753
134654
144753
154753
164654
174555
184555
194456
204456
214456
224555
234555
244555
254654
264654
274654
284753
294753
304753

Chance of precipitation in September

Any precipitation

Tondabayashichō gets around 158 mm of rain over 11.8 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 39% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
239
339
440
540
641
741
841
941
1041
1141
1241
1340
1439
1539
1639
1738
1838
1938
2038
2138
2238
2338
2438
2538
2638
2738
2838
2938
3038

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 55% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1031331512
2041431492
3141531482
4141532462
5151632452
6151732441
7161832421
8161932411
9272032391
10272132371
11282232361
12392331340
133102431320
144112530300
154122630270
165132729250
176142828230
187152928210
197163027200
208183026180
219193026160
2210203125140
2311213124130
2412223123110
2513233123100
261423322290
271524322180
281625322070
291726322060
301826311950

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:35 AM to 5:56 AM, and sunset from 6:20 PM to 5:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:356:20
212.75:356:19
312.75:366:17
412.75:376:16
512.65:386:14
612.65:386:13
712.55:396:11
812.55:406:10
912.55:406:09
1012.45:416:07
1112.45:426:06
1212.45:436:04
1312.35:436:03
1412.35:446:01
1512.25:456:00
1612.25:465:58
1712.25:465:57
1812.15:475:55
1912.15:485:54
2012.15:485:52
2112.05:495:51
2212.05:505:49
2312.05:515:48
2411.95:515:46
2511.95:525:45
2611.85:535:44
2711.85:545:42
2811.85:545:41
2911.75:555:39
3011.75:565:38

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.21 kWh/m².

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 5.49 kWh/m² in May across the year — September's 4.21 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.7Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.5Bright
84.5Bright
94.5Bright
104.4Bright
114.4Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.2Bright
194.1Bright
204.1Bright
214.0Bright
224.0Bright
234.0Moderate
244.0Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.8Moderate
Planning a trip in September

Hazard calendar for Tondabayashichō

In seasonPeak

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

Tondabayashichō 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 Tondabayashichō?

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

5.3
Sightseeing
6th-best month of the year
6.4
Beach & pool
1st-best month of the year

September is a reasonable time to visit Tondabayashichō for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Tondabayashichō in September

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

In September, Tondabayashichō sees daytime highs around 29°C and nights near 21°C. Pack light clothes. Worth having: rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Tondabayashichō in September

The nearest coast averages about 26°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 25 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 6 to Nov 11 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Tondabayashichō 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 Tondabayashichō peaks around June 23 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highModerateJun 23UV 10Dec 23UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Tondabayashichō 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 Tondabayashichō is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1423 µg/m³Oct 1713 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun19Moderate
Jul17Moderate
Aug18Moderate
Sep14Moderate
Oct13Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Tondabayashichō?

Tondabayashichō sits at 34.5°N, 135.6°E, 66 m above sea level, in Japan. The nearest listed city is Kanō, 3.0 km away.

Topography around Tondabayashichō

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

Within 3 km, the terrain around Tondabayashichō has only modest variations in elevation — a maximum elevation change of 130 m around an average of 79 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,136 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,879 m.

The land around Tondabayashichō is covered by artificial surfaces (51%) and trees (24%) within 3 km, artificial surfaces (45%) and trees (44%) within 16 km, and trees (66%) within 80 km.

3 km
130 m
16 km
1,136 m
80 km
1,879 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Kanō 3.0 km · Sayama 4.0 km · Habikino 6.0 km · Kawachi-Nagano 7.0 km · Fujiidera 7.0 km · Matsubara 9.0 km · Katsuragi 9.0 km · Kashihara 9.0 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 Tondabayashichō (34.5007°, 135.6021°, elevation 66 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).