Aizu-misato Machi weather in September

In September, Aizu-misato Machi sees average daytime highs of 23°C and overnight lows near 16°C, with 145 mm of rain across 14 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 20°C by the end. The sky is clear or mostly clear about 15% of the time in September, and the air most often feels humid.

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 Aizu-misato Machi's 6th-clearest and 9th-windiest month. For the whole year in context, see Aizu-misato Machi's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
16°
10th coldest
Rainfall
145 mm
14 wet days
Daylight
12 h 12 min
5:28 AM – 5:42 PM
Cloud cover
71%
6th clearest
Wind
7 km/h
9th windiest
Solar energy
3.62 kWh/m²
Travel score
5.8
out of 10

Aizu-misato Machi is town in Ōnuma district, Fukushima prefecture, Japan.

Density
69/km²
people per km²
Founded
2005

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 25°C in the first days to 20°C by the end.

A typical September day in Aizu-misato Machi reaches about 23°C in the afternoon and slips back to 16°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 27°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°151015202530
Avg high (°C)Avg low (°C)
12619
22619
32519
42518
52518
62518
72518
82518
92418
102418
112417
122417
132417
142317
152317
162316
172316
182316
192216
202215
212215
222215
232115
242114
252114
262114
272114
282014
292013
302013

How September really feels in Aizu-misato Machi

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.

Aizu-misato Machi 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 daysSnow daysDaylight (hours)Travel score
Jan / -4°17924.124.69.70.0
Feb / -4°13119.819.610.60.0
Mar / -1°13918.914.711.70.4
Apr13° / 11114.93.712.93.1
May19° / 10°10713.10.1145.5
Jun22° / 15°13014.5014.55.7
Jul26° / 19°20618.6014.35.2
Aug27° / 20°14315.8013.45.5
Sep23° / 16°14514012.35.8
Oct17° / 10°13613.40.1114.9
Nov11° / 11416.24.4102.2
Dec / -2°16222.117.79.50.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 67%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13664
23565
33565
43565
53565
63565
73565
83565
93565
103565
113565
123466
133466
143367
153367
163268
173268
183268
193268
203169
213169
223169
233169
243070
253070
263070
272971
283169
293169
303070

Chance of precipitation in September

Any precipitation

Aizu-misato Machi gets around 145 mm of rain over 14 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 47% and peaks near 50% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
150
250
350
450
550
649
749
849
948
1048
1148
1248
1348
1447
1547
1647
1747
1846
1946
2046
2146
2246
2346
2446
2546
2646
2746
2846
2946
3046

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 27% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1111334610
211133459
311234458
421335437
521435427
631535416
731636396
841836375
951936365
1062036344
1172236324
1292335303
13102435283
14122634262
15142733242
16162832222
17183031201
18203130181
19223329161
20243427151
21263526131
22283624110
23313623100
2433372180
2535382070
2637391860
2739391750
2841391640
2944391430
3046381330

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 8 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
268calm
278calm
288calm
298calm
308calm

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 5:15 AM to 5:40 AM, and sunset from 6:06 PM to 5:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:156:06
212.85:166:04
312.85:176:03
412.75:186:01
512.75:196:00
612.65:195:58
712.65:205:56
812.65:215:55
912.55:225:53
1012.55:235:52
1112.45:245:50
1212.45:255:49
1312.45:255:47
1412.35:265:45
1512.35:275:44
1612.25:285:42
1712.25:295:41
1812.25:305:39
1912.15:315:37
2012.15:315:36
2112.05:325:34
2212.05:335:33
2311.95:345:31
2411.95:355:29
2511.95:365:28
2611.85:375:26
2711.85:385:25
2811.75:385:23
2911.75:395:21
3011.75:405:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.62 kWh/m².

For context, solar energy here swings from a low near 1.9 kWh/m² to a high of 5.34 kWh/m² in May across the year — September's 3.62 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.0Bright
24.0Bright
34.0Moderate
44.0Moderate
53.9Moderate
63.9Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.8Moderate
113.7Moderate
123.7Moderate
133.6Moderate
143.6Moderate
153.6Moderate
163.6Moderate
173.5Moderate
183.5Moderate
193.5Moderate
203.5Moderate
213.4Moderate
223.4Moderate
233.4Moderate
243.4Moderate
253.3Moderate
263.3Moderate
273.3Moderate
283.3Moderate
293.2Moderate
303.2Moderate
Planning a trip in September

Is September a good time to visit Aizu-misato Machi?

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

5.8
Sightseeing
1st-best month of the year
4.4
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Aizu-misato Machi for sightseeing.

What to pack for Aizu-misato Machi in September

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

In September, Aizu-misato Machi sees daytime highs around 23°C and nights near 16°C. Pack rain gear. Worth having: light clothes. About 14 days see rain.

rain gearlight clothes

UV index in Aizu-misato Machi 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 Aizu-misato Machi peaks around August 12 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 highModerateAug 12UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug10Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Low

Air quality in Aizu-misato Machi 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 Aizu-misato Machi is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1623 µg/m³Dec 1711 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun18Moderate
Jul16Moderate
Aug14Moderate
Sep13Moderate
Oct13Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Aizu-misato Machi?

Aizu-misato Machi sits at 37.4°N, 139.8°E, 389 m above sea level, in Japan. The nearest listed city is Aizu-Wakamatsu, 15 km away.

Topography around Aizu-misato Machi

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Aizu-misato Machi.

Within 3 km, the terrain around Aizu-misato Machi has significant variations in elevation — a maximum elevation change of 521 m around an average of 431 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,291 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,551 m.

The land around Aizu-misato Machi is covered by trees (86%) within 3 km, trees (81%) within 16 km, and trees (84%) within 80 km.

3 km
521 m
16 km
1,291 m
80 km
2,551 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Aizu-Wakamatsu 15 km · Bange 17 km · Kitakata 27 km · Kumakura 42 km · Nasu 48 km · Yabuki 50 km · Kōriyama 50 km · Shirakawa 51 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 Aizu-misato Machi (37.4086°, 139.8132°, elevation 389 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).