Minamiashigara weather in September

In September, Minamiashigara sees average daytime highs of 25°C and overnight lows near 19°C, with 263 mm of rain across 16.7 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 27°C in the first days to 22°C by the end. The sky is clear or mostly clear about 17% 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 Minamiashigara's 9th-clearest and 5th-windiest month. For the whole year in context, see Minamiashigara's year-round climate.

Daytime high
25°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
263 mm
16.7 wet days
Daylight
12 h 12 min
5:31 AM – 5:44 PM
Cloud cover
71%
9th clearest
Wind
6 km/h
5th windiest
Solar energy
3.92 kWh/m²
Travel score
5.5
out of 10

Minamiashigara is city in Kanagawa prefecture, Japan.

Density
530/km²
people per km²
Founded
1889

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 22°C by the end.

A typical September day in Minamiashigara 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 21°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)
12721
22721
32721
42721
52721
62720
72620
82620
92620
102620
112620
122620
132519
142519
152519
162519
172519
182418
192418
202418
212418
222418
232318
242317
252317
262317
272317
282217
292216
302216

How September really feels in Minamiashigara

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.

Minamiashigara 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 / 9710.14.69.91.1
Feb / 10610.84.810.71.2
Mar11° / 184163.611.72.4
Apr16° / 17814.40.412.94.5
May20° / 13°18614.6013.85.5
Jun23° / 17°24317.8014.35.2
Jul27° / 21°23517.8014.14.9
Aug28° / 22°18516.4013.34.9
Sep25° / 19°26316.7012.25.5
Oct20° / 13°26115.7011.15.4
Nov15° / 13212.1010.14.2
Dec10° / 9010.419.72.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% 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 69%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23565
33466
43466
53466
63466
73367
83367
93367
103268
113169
123169
133268
143268
153070
163070
173070
183070
192971
202971
213070
222971
232872
242872
252773
262773
272872
282872
292872
302872

Chance of precipitation in September

Any precipitation

Minamiashigara gets around 263 mm of rain over 16.7 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 56% and peaks near 57% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
155
255
356
456
556
656
757
857
957
1057
1157
1257
1357
1456
1556
1656
1756
1856
1956
2055
2155
2255
2355
2455
2555
2656
2756
2856
2957
3057

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 35% 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 (%)Miserable (%)
1021543401
2021544381
3021645361
4031745341
5031846331
6041846310
7051946290
8062046280
9162146260
10172245240
11182345220
12292444200
132112543190
143122642170
154132741150
165142839130
176152938120
187173136100
19818323490
20919333280
211020342970
221121342760
231322352550
241423362340
251525362130
261626371930
271727371820
281828361620
291929361510
302030351310

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 7 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
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 5:20 AM to 5:42 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)
112.85:206:07
212.75:216:05
312.75:216:04
412.75:226:02
512.65:236:01
612.65:245:59
712.65:245:58
812.55:255:56
912.55:265:55
1012.45:275:53
1112.45:275:52
1212.45:285:50
1312.35:295:49
1412.35:305:47
1512.35:315:46
1612.25:315:44
1712.25:325:43
1812.15:335:41
1912.15:345:40
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
2911.75:415:25
3011.75:425:23

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.92 kWh/m².

For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 5.27 kWh/m² in May across the year — September's 3.92 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.4Bright
44.4Bright
54.3Bright
64.3Bright
74.3Bright
84.2Bright
94.2Bright
104.1Bright
114.1Bright
124.0Bright
134.0Bright
144.0Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.7Moderate
213.7Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.4Moderate
303.4Moderate
Planning a trip in September

Hazard calendar for Minamiashigara

In seasonPeak

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

Minamiashigara 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 Minamiashigara?

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

5.5
Sightseeing
1st-best month of the year
4.8
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Minamiashigara for sightseeing.

What to pack for Minamiashigara in September

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

In September, Minamiashigara sees daytime highs around 25°C and nights near 19°C. Pack rain gear. Worth having: light clothes. About 17 days see rain.

rain gearlight clothes

Sea temperature near Minamiashigara 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 22 km away) is warmest in August at about 26°C and coldest in February near 15°C.

It's comfortable for a long swim from May 31 to Nov 26 — about 5.9 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar16Cool
Apr17Cool
May19Cool
Jun21Refreshing
Jul24Refreshing
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Minamiashigara 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 Minamiashigara peaks around July 20 at about 10 (extreme) — 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 highExtremeVery highHighModerateJul 20UV 10Dec 23UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May9Very high
Jun9Very high
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Minamiashigara 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 Minamiashigara is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1623 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb20Moderate
Mar20Moderate
Apr23Moderate
May20Moderate
Jun17Moderate
Jul13Moderate
Aug12Good
Sep12Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Minamiashigara?

Minamiashigara sits at 35.3°N, 139.1°E, 44 m above sea level, in Japan. The nearest listed city is Kanaishima, 3.0 km away.

Topography around Minamiashigara

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

Within 3 km, the terrain around Minamiashigara has significant variations in elevation — a maximum elevation change of 406 m around an average of 95 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,483 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,736 m.

The land around Minamiashigara is covered by trees (46%) and artificial surfaces (38%) within 3 km, trees (68%) within 16 km, and trees (48%) and water (33%) within 80 km.

3 km
406 m
16 km
1,483 m
80 km
3,736 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Kanaishima 3.0 km · Kamiōi 4.0 km · Odawara 8.0 km · Hadano 12 km · Ninomiya 13 km · Gotemba 15 km · Hakone 16 km · Ōiso 19 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 Minamiashigara (35.3195°, 139.1096°, elevation 44 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).