Minamisatsuma weather in September

In September, Minamisatsuma sees average daytime highs of 28°C and overnight lows near 24°C, with 206 mm of rain across 13.4 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 29°C in the first days to 27°C by the end. The sky is clear or mostly clear about 34% of the time in September, and the air most often feels oppressive.

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 Minamisatsuma's 3rd-clearest and 11th-windiest month. For the whole year in context, see Minamisatsuma's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
24°
10th coldest
Rainfall
206 mm
13.4 wet days
Daylight
12 h 12 min
6:08 AM – 6:19 PM
Cloud cover
59%
3rd clearest
Wind
12 km/h
11th windiest
Solar energy
4.33 kWh/m²
Travel score
5.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 29°C in the first days to 27°C by the end.

A typical September day in Minamisatsuma reaches about 28°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, September runs about 2°C cooler than August and about 4°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12925
22925
32925
42925
52925
62925
72925
82925
92925
102925
112924
122924
132924
142824
152824
162824
172824
182824
192823
202823
212823
222723
232723
242723
252723
262723
272722
282722
292622
302622

How September really feels in Minamisatsuma

Once humidity and wind are folded in, September averages 9 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
9
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.

Minamisatsuma weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 10412.510.23.0
Feb13° / 11711.510.93.4
Mar16° / 11°17013.611.84.5
Apr19° / 14°18912.112.75.8
May23° / 18°20711.713.66.4
Jun26° / 22°49919.3145.0
Jul29° / 25°30717.513.84.5
Aug30° / 26°16415.313.14.3
Sep28° / 24°20613.412.25.5
Oct24° / 19°113911.27.2
Nov19° / 15°1279.510.46.2
Dec14° / 10°10210.5104.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% 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 49%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14951
24951
35050
44951
54951
64951
75050
85149
95149
105149
115248
125248
135248
145347
155347
165248
175248
185248
195347
205248
215248
225149
235149
245149
255149
265149
275149
285149
295149
305248

Chance of precipitation in September

Any precipitation

Minamisatsuma gets around 206 mm of rain over 13.4 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 44% and peaks near 51% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
151
251
351
450
550
649
749
849
948
1048
1147
1246
1346
1445
1544
1644
1743
1843
1942
2041
2141
2240
2339
2439
2538
2637
2737
2836
2936
3035

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 82% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1001114939
2001125037
3001135135
4001145134
5002145232
6002155330
7012165328
8013175227
9013185325
10014195224
11025215023
12026224821
13028234720
14139244519
151310254318
161412254216
171413264015
181515273814
191616273713
201618283512
211719293311
221721293210
23182230319
24182330298
25192430287
261102531276
272112530256
282112731255
292122730244
302132830234

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

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 5:58 AM to 6:16 AM, and sunset from 6:39 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:586:39
212.65:596:37
312.66:006:36
412.66:006:35
512.56:016:34
612.56:016:32
712.56:026:31
812.46:036:30
912.46:036:28
1012.46:046:27
1112.46:046:26
1212.36:056:24
1312.36:066:23
1412.36:066:22
1512.26:076:20
1612.26:086:19
1712.26:086:17
1812.16:096:16
1912.16:096:15
2012.16:106:13
2112.06:116:12
2212.06:116:11
2312.06:126:09
2411.96:126:08
2511.96:136:07
2611.96:146:05
2711.86:146:04
2811.86:156:03
2911.86:166:01
3011.76:166:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.33 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 5.14 kWh/m² in May across the year — September's 4.33 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.1Bright
274.1Bright
284.1Bright
294.1Bright
304.0Bright
Planning a trip in September

Hazard calendar for Minamisatsuma

In seasonPeak

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

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

Minamisatsuma's rainy season runs June–July, 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 Minamisatsuma?

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

5.5
Sightseeing
5th-best month of the year
6.3
Beach & pool
1st-best month of the year

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

What to pack for Minamisatsuma in September

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

In September, Minamisatsuma sees daytime highs around 28°C and nights near 24°C. Pack light clothes. Worth having: rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Minamisatsuma 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 15 km away) is warmest in August at about 28°C and coldest in February near 18°C.

It's comfortable for a long swim from Apr 26 to Dec 26 — about 8.1 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb18Cool
Mar19Cool
Apr19Cool
May21Refreshing
Jun24Refreshing
Jul27Warm
Aug28Tropical
Sep27Warm
Oct25Warm
Nov23Refreshing
Dec21Refreshing

UV index in Minamisatsuma 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 Minamisatsuma peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 11Jan 1UV 4
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar7High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug9Very high
Sep10Extreme
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Minamisatsuma 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 Minamisatsuma is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1423 µg/m³Oct 1012 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb19Moderate
Mar22Moderate
Apr23Moderate
May21Moderate
Jun17Moderate
Jul12Moderate
Aug14Moderate
Sep12Moderate
Oct12Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Minamisatsuma?

Minamisatsuma sits at 31.4°N, 130.3°E, 272 m above sea level, in Japan. The nearest listed city is Kaseda-shirakame, 4.0 km away.

Topography around Minamisatsuma

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

Within 3 km, the terrain around Minamisatsuma has significant variations in elevation — a maximum elevation change of 500 m around an average of 140 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 611 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,382 m.

The land around Minamisatsuma is covered by trees (94%) within 3 km, trees (53%) and water (35%) within 16 km, and water (69%) and trees (27%) within 80 km.

3 km
500 m
16 km
611 m
80 km
1,382 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Kaseda-shirakame 4.0 km · Makurazaki 14 km · Minamikyushu 17 km · Ijūin 28 km · Kagoshima 32 km · Umeki 32 km · Kushikino 36 km · Ichikikushikino 38 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 Minamisatsuma (31.39°, 130.2834°, elevation 272 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).