Ikedachō weather in September

In September, Ikedachō sees average daytime highs of 26°C and overnight lows near 19°C, with 229 mm of rain across 15.2 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 28°C in the first days to 24°C by the end. The sky is clear or mostly clear about 25% of the time in September, and the air most often feels muggy.

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

Daytime high
26°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
229 mm
15.2 wet days
Daylight
12 h 12 min
5:53 AM – 6:05 PM
Cloud cover
64%
9th clearest
Wind
6 km/h
9th windiest
Solar energy
4.16 kWh/m²
Travel score
5.7
out of 10

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 Ikedachō reaches about 26°C in the afternoon and slips back to 19°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 29°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12822
22822
32822
42821
52821
62821
72821
82721
92721
102721
112720
122720
132720
142620
152620
162619
172619
182619
192619
202519
212518
222518
232518
242518
252418
262418
272417
282417
292417
302417

How September really feels in Ikedachō

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.

Ikedachō 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 / 6510.34.2101.0
Feb / 7510.43.710.71.4
Mar12° / 11512.9211.73.0
Apr17° / 13011.30.212.85.3
May22° / 14°15812.1013.76.3
Jun25° / 18°26016014.25.5
Jul29° / 22°25417.70144.6
Aug30° / 23°18116.4013.34.4
Sep26° / 19°22915.2012.25.7
Oct21° / 13°17310.9011.16.4
Nov15° / 8790.110.24.8
Dec10° / 7710.529.82.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 58%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24357
34357
44258
54258
64159
74159
84159
94159
104159
114159
124258
134258
144258
154159
164159
174159
184159
194159
204159
214159
224258
234258
244258
254357
264357
274357
284258
294357
304357

Chance of precipitation in September

Any precipitation

Ikedachō gets around 229 mm of rain over 15.2 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 50% and peaks near 54% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
154
254
354
454
554
654
754
854
954
1053
1153
1252
1352
1451
1550
1650
1749
1849
1949
2048
2148
2247
2347
2447
2546
2646
2746
2845
2945
3045

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 52% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
103153645
204163643
304173742
405183740
515193738
616203836
716213834
817223832
928233830
1029233828
11310243826
12311243724
13412253623
14513253521
15615263519
16716263318
17818263216
18919263115
191020273013
201122272912
211223272711
221324272610
23142627259
24152727238
25162827227
26172927216
27183028195
28203027185
29213027174
30223127164

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 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 60 minutes over September. Sunrise moves from 5:42 AM to 6:03 AM, and sunset from 6:27 PM to 5:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:426:27
212.75:436:25
312.75:446:24
412.65:446:23
512.65:456:21
612.65:466:20
712.55:466:18
812.55:476:17
912.55:486:16
1012.45:496:14
1112.45:496:13
1212.45:506:11
1312.35:516:10
1412.35:516:08
1512.25:526:07
1612.25:536:05
1712.25:546:04
1812.15:546:02
1912.15:556:01
2012.15:566:00
2112.05:565:58
2212.05:575:57
2312.05:585:55
2411.95:595:54
2511.95:595:52
2611.86:005:51
2711.86:015:49
2811.86:025:48
2911.76:025:47
3011.76:035:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.16 kWh/m².

For context, solar energy here swings from a low near 2.4 kWh/m² to a high of 5.57 kWh/m² in May across the year — September's 4.16 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.6Bright
54.5Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.3Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.1Bright
214.0Bright
224.0Bright
234.0Moderate
243.9Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.8Moderate
Planning a trip in September

Hazard calendar for Ikedachō

In seasonPeak

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

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

Ikedachō's rainy season runs April–October, 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 Ikedachō?

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
5.5
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Ikedachō for sightseeing.

What to pack for Ikedachō in September

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

In September, Ikedachō sees daytime highs around 26°C and nights near 19°C. Pack rain gear. Worth having: light clothes. About 15 days see rain.

rain gearlight clothes

Sea temperature near Ikedachō in September

The nearest coast averages about 27°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 28°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 3 to Nov 12 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug28Warm
Sep27Warm
Oct24Refreshing
Nov20Cool
Dec16Cool

UV index in Ikedachō in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ikedachō peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 23UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May9Very high
Jun11Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Ikedachō 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 Ikedachō is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1321 µg/m³Oct 1311 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar20Moderate
Apr22Moderate
May19Moderate
Jun16Moderate
Jul13Moderate
Aug12Moderate
Sep11Good
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Ikedachō?

Ikedachō sits at 34.0°N, 133.8°E, 120 m above sea level, in Japan. The nearest listed city is Shioiri, 15 km away.

Topography around Ikedachō

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

Within 3 km, the terrain around Ikedachō has large variations in elevation — a maximum elevation change of 787 m around an average of 370 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,651 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,914 m.

The land around Ikedachō is covered by trees (84%) within 3 km, trees (88%) within 16 km, and trees (56%) and water (32%) within 80 km.

3 km
787 m
16 km
1,651 m
80 km
1,914 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Shioiri 15 km · Kan’onjichō 18 km · Kawanoechō 21 km · Zentsujichó 22 km · Mitoyo 24 km · Shikokuchūō 24 km · Takinomiya 27 km · Tadotsu 28 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 Ikedachō (34.0285°, 133.8062°, elevation 120 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).