Nomimachi weather in September

In September, Nomimachi sees average daytime highs of 25°C and overnight lows near 21°C, with 197 mm of rain across 14.4 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 27°C in the first days to 23°C by the end. The sky is clear or mostly clear about 26% 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 Nomimachi's 7th-clearest and 9th-windiest month. For the whole year in context, see Nomimachi's year-round climate.

Daytime high
25°
3rd warmest
Overnight low
21°
10th coldest
Rainfall
197 mm
14.4 wet days
Daylight
12 h 12 min
5:42 AM – 5:55 PM
Cloud cover
64%
7th clearest
Wind
12 km/h
9th windiest
Solar energy
4.1 kWh/m²
Travel score
5.9
out of 10

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 23°C by the end.

A typical September day in Nomimachi reaches about 25°C in the afternoon and slips back to 21°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 29°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12823
22823
32723
42723
52722
62722
72722
82722
92622
102622
112621
122621
132621
142621
152521
162521
172520
182520
192520
202420
212420
222419
232419
242419
252419
262319
272318
282318
292318
302318

How September really feels in Nomimachi

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.

Nomimachi 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 / 2172412.79.80.4
Feb / 14719.49.610.60.6
Mar10° / 14916.94.211.71.9
Apr15° / 12512.90.312.94.2
May20° / 14°13012.5013.95.9
Jun23° / 19°16012.5014.46.1
Jul27° / 23°21515.5014.25.4
Aug29° / 24°14513013.45.2
Sep25° / 21°19714.4012.25.9
Oct20° / 15°15913.6011.15.9
Nov15° / 10°17217.30.310.13.7
Dec / 230236.59.61.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% 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 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34456
44456
54456
64456
74357
84357
94456
104456
114555
124555
134555
144456
154456
164357
174357
184357
194357
204159
214159
224159
234159
244159
254159
264159
274159
284258
294258
304258

Chance of precipitation in September

Any precipitation

Nomimachi gets around 197 mm of rain over 14.4 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 48% and peaks near 51% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
148
249
349
450
550
650
751
851
951
1051
1150
1250
1349
1449
1548
1648
1747
1847
1947
2046
2146
2246
2346
2446
2546
2646
2746
2846
2946
3046

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 33% of days. Sticky, muggy-or-worse air turns up on roughly 55% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1011236482
2021337462
3021437452
4021538432
5031638412
6031739392
7031840381
8141939351
9152140331
10152240311
11162340291
12272440271
13282539251
14292739231
153102838200
164113037180
174123136170
185133235150
196153333130
207163432110
218173530100
22918352990
231020362770
241121372560
251222372350
261323372240
271425372040
281526371830
291627371730
301828361620

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze

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 5:29 AM to 5:53 AM, and sunset from 6:18 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:296:18
212.85:306:17
312.75:316:15
412.75:326:14
512.75:336:12
612.65:336:11
712.65:346:09
812.55:356:08
912.55:366:06
1012.55:376:05
1112.45:376:03
1212.45:386:01
1312.35:396:00
1412.35:405:58
1512.35:415:57
1612.25:425:55
1712.25:425:54
1812.15:435:52
1912.15:445:51
2012.15:455:49
2112.05:465:47
2212.05:465:46
2312.05:475:44
2411.95:485:43
2511.95:495:41
2611.85:505:40
2711.85:515:38
2811.85:515:37
2911.75:525:35
3011.75:535:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.1 kWh/m².

For context, solar energy here swings from a low near 1.96 kWh/m² to a high of 5.71 kWh/m² in May across the year — September's 4.1 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.5Bright
44.5Bright
54.4Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.1Bright
154.1Bright
164.1Bright
174.0Bright
184.0Bright
194.0Moderate
204.0Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.8Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.7Moderate
303.7Moderate
Planning a trip in September

Hazard calendar for Nomimachi

In seasonPeak

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

Nomimachi 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 Nomimachi?

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

5.9
Sightseeing
2nd-best month of the year
5.4
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Nomimachi for sightseeing.

What to pack for Nomimachi in September

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

In September, Nomimachi sees daytime highs around 25°C and nights near 21°C. Pack rain gear. Worth having: light clothes. About 14 days see rain.

rain gearlight clothes

Sea temperature near Nomimachi 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 offshore is warmest in August at about 27°C and coldest in March near 11°C.

It's comfortable for a long swim from Jun 17 to Nov 4 — about 4.6 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar11Bracing
Apr12Bracing
May16Cool
Jun20Refreshing
Jul24Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Nomimachi 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 Nomimachi peaks around August 11 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 11UV 10Dec 21UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Low

Air quality in Nomimachi 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 Nomimachi is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1722 µg/m³Oct 1110 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar21Moderate
Apr23Moderate
May21Moderate
Jun18Moderate
Jul15Moderate
Aug12Good
Sep10Good
Oct10Good
Nov11Good
Dec10Good
Location & terrain

Where is Nomimachi?

Nomimachi sits at 36.4°N, 136.5°E, 3 m above sea level, in Japan. The nearest listed city is Komatsu, 3.0 km away.

Topography around Nomimachi

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

Within 3 km, the terrain around Nomimachi has only modest variations in elevation — a maximum elevation change of 67 m around an average of 9 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 882 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,671 m.

The land around Nomimachi is covered by artificial surfaces (42%) and cropland (40%) within 3 km, trees (39%) and water (28%) within 16 km, and trees (55%) and water (32%) within 80 km.

3 km
67 m
16 km
882 m
80 km
2,671 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Komatsu 3.0 km · Matsutō 14 km · Tsurugi-asahimachi 14 km · Nonoichi 18 km · Kaga 18 km · Kanazawa 24 km · Mukai-awagasaki 28 km · Awara 33 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 Nomimachi (36.4097°, 136.4847°, elevation 3 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).