Ōmamachō-ōmama in Fall

In fall (September, October and November), Ōmamachō-ōmama sees average daytime highs around 18°C and overnight lows near 11°C, with 438 mm of precipitation over about 38 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.

Over the season highs ease from about 26°C in early September to 11°C by late November. The sky is clear or mostly clear about 33% of the time across fall, and the air most often feels dry.

Fall is Ōmamachō-ōmama's best season of the year to visit on our travel score. For the whole year in context, see Ōmamachō-ōmama's year-round climate.

Avg daytime high
18°C
2nd-warmest season
Avg overnight low
11°C
Precipitation
438 mm
38 wet days
Avg wind
5 km/h
Travel score
4.9
best season of the year
Months
Sep · Oct · Nov

Temperature in Ōmamachō-ōmama in Fall

Average highAverage lowShaded bands: 10–90% of days

Over the season highs ease from about 26°C in early September to 11°C by late November.

A typical fall day in Ōmamachō-ōmama reaches about 18°C and drops to 11°C overnight. The warmest of the three months is September, the coolest November.

10°20°30°SepOctNov

How fall really feels in Ōmamachō-ōmama

Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Ōmamachō-ōmama weather by month

How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°517.25.59.80.1
Feb / -2°518.35.910.60.4
Mar10° / 9912.45.411.72.0
Apr15° / 11412.71.312.94.4
May20° / 11°13614.3013.95.6
Jun23° / 16°17318.4014.45.1
Jul27° / 20°21721.3014.24.7
Aug28° / 21°17420.2013.44.7
Sep24° / 17°20417.2012.25.4
Oct18° / 11°16813.4011.15.4
Nov13° / 667.80.310.13.9
Dec / 4573.39.61.3

Cloud cover in Fall

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time across fall.

0%25%50%75%100%SepOctNov

Chance of precipitation in Fall

Any precipitationSnow

Ōmamachō-ōmama gets around 438 mm of rain and snow over 38 wet days across fall. The line is the day-by-day chance of measurable precipitation.

0%20%40%60%SepOctNov

Humidity in Fall

DryComfortableHumidMuggyOppressiveMiserable

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

0%25%50%75%100%SepOctNov

Wind in Fall

Winds average 5 km/h across fall.

0246810SepOctNov

Sunrise & sunset in Fall

DaylightNight

Daylight runs from about 12 h 48 min in early September to 9 h 42 min by late November. The lit band spans sunrise to sunset each day.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMSepOctNov

Solar energy in Fall

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across fall, about 3.1 kWh/m².

012345SepOctNov
Planning a trip in fall

Hazard calendar for Ōmamachō-ōmama

In seasonPeak

In fall, Ōmamachō-ōmama overlaps its rainy season season. The full year is below, with each hazard's peak months called out.

Ōmamachō-ōmama's rainy season runs March–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is fall a good time to visit Ōmamachō-ōmama?

Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

4.9
Sightseeing
1st-best month of the year
2.1
Beach & pool
2nd-best month of the year

fall is a reasonable time to visit Ōmamachō-ōmama for sightseeing.

What to pack for Ōmamachō-ōmama in Fall

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

In fall, Ōmamachō-ōmama sees daytime highs around 18°C and nights near 11°C. Pack rain gear. Worth having: light clothes and a warm layer. About 38 days see rain.

rain gearlight clothesa warm layer

UV index in Ōmamachō-ōmama in Fall

LowModerateHighVery highExtreme

Clear-sky midday UV across fall averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ōmamachō-ōmama peaks around July 16 at about 9 (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 highModerateJul 16UV 9Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Ōmamachō-ōmama in Fall

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.

Air quality in Ōmamachō-ōmama is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 179 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug13Moderate
Sep11Good
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Ōmamachō-ōmama?

Ōmamachō-ōmama sits at 36.4°N, 139.3°E, 182 m above sea level, in Japan. The nearest listed city is Midori, 2.0 km away.

Topography around Ōmamachō-ōmama

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

Within 3 km, the terrain around Ōmamachō-ōmama has significant variations in elevation — a maximum elevation change of 321 m around an average of 210 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,779 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,552 m.

The land around Ōmamachō-ōmama is covered by artificial surfaces (42%) and trees (41%) within 3 km, trees (56%) and artificial surfaces (25%) within 16 km, and trees (67%) within 80 km.

3 km
321 m
16 km
1,779 m
80 km
2,552 m
treesgrasslandcroplandartificial surfaceswater
Fall weather nearby: Midori 2.0 km · Kiryū 6.0 km · Isesaki 14 km · Ōta 17 km · Maebashi 18 km · Sakai-nakajima 18 km · Ashikaga 19 km · Tamamura 20 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 Ōmamachō-ōmama (36.4318°, 139.2753°, elevation 182 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.