Shirahamachō-usazakiminami weather in September

In September, Shirahamachō-usazakiminami sees average daytime highs of 26°C and overnight lows near 22°C, with 202 mm of rain across 12.6 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 28°C in the first days to 24°C by the end. The sky is clear or mostly clear about 34% 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 Shirahamachō-usazakiminami's 7th-clearest and 8th-windiest month. For the whole year in context, see Shirahamachō-usazakiminami's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
22°
10th coldest
Rainfall
202 mm
12.6 wet days
Daylight
12 h 12 min
5:49 AM – 6:02 PM
Cloud cover
58%
7th clearest
Wind
14 km/h
8th windiest
Solar energy
4.4 kWh/m²
Travel score
6.3
out of 10

Shirahamachō-usazakiminami is human settlement in Japan.

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 28°C in the first days to 24°C by the end.

A typical September day in Shirahamachō-usazakiminami reaches about 26°C in the afternoon and slips back to 22°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 28°C. Set against its neighbours, September runs about 2°C cooler than August and about 5°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12824
22824
32824
42824
52724
62724
72724
82723
92723
102723
112723
122723
132723
142623
152622
162622
172622
182622
192622
202622
212521
222521
232521
242521
252521
262520
272420
282420
292420
302420

How September really feels in Shirahamachō-usazakiminami

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.

Shirahamachō-usazakiminami 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 / 527.20.49.91.8
Feb / 647.50.610.72.0
Mar12° / 109100.111.73.2
Apr16° / 11°12710.1012.85.1
May20° / 16°14510.1013.86.3
Jun23° / 20°18012.4014.36.1
Jul27° / 24°19112.9014.15.9
Aug29° / 25°11410.9013.35.6
Sep26° / 22°20212.6012.26.3
Oct22° / 17°1519.1011.16.8
Nov16° / 12°777.3010.25.5
Dec11° / 647.409.73.1

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 15% of September, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14951
24951
34951
44951
54951
64951
74951
84951
94951
104951
114951
124951
135050
144951
154951
164951
175050
184951
195050
205050
215050
225050
235050
245050
255050
265149
275149
285149
295050
305149

Chance of precipitation in September

Any precipitation

Shirahamachō-usazakiminami gets around 202 mm of rain over 12.6 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 41% and peaks near 45% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
143
243
344
445
545
645
745
845
945
1045
1144
1244
1343
1442
1542
1641
1740
1840
1940
2039
2139
2239
2338
2438
2538
2638
2738
2838
2938
3038

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 64% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1008254225
2018264124
3019274122
40110284121
50111294019
60212303917
70213313816
80314313714
91315323613
101416333511
111517333410
12161833339
13271933328
14282033307
15292133296
163102232275
173112332264
183132531244
194142631233
205152730213
215162829202
226172928182
236192927172
247203026151
258203125141
269213225131
279223224121
2810233223111
291124322391
301225322290

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light 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 5:38 AM to 6:00 AM, and sunset from 6:24 PM to 5:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:386:24
212.75:396:22
312.75:396:21
412.75:406:20
512.65:416:18
612.65:426:17
712.55:426:15
812.55:436:14
912.55:446:12
1012.45:456:11
1112.45:456:09
1212.45:466:08
1312.35:476:06
1412.35:486:05
1512.35:486:03
1612.25:496:02
1712.25:506:00
1812.15:515:59
1912.15:515:57
2012.15:525:56
2112.05:535:54
2212.05:545:53
2312.05:545:51
2411.95:555:50
2511.95:565:49
2611.85:575:47
2711.85:575:46
2811.85:585:44
2911.75:595:43
3011.76:005:41

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.4 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 5.7 kWh/m² in May across the year — September's 4.4 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.8Bright
54.8Bright
64.8Bright
74.7Bright
84.7Bright
94.7Bright
104.6Bright
114.6Bright
124.5Bright
134.5Bright
144.5Bright
154.4Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.3Bright
214.2Bright
224.2Bright
234.2Bright
244.1Bright
254.1Bright
264.1Bright
274.0Bright
284.0Bright
294.0Moderate
304.0Moderate
Planning a trip in September

Hazard calendar for Shirahamachō-usazakiminami

In seasonPeak

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

Shirahamachō-usazakiminami 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 Shirahamachō-usazakiminami?

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

6.3
Sightseeing
2nd-best month of the year
6.0
Beach & pool
3rd-best month of the year

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

What to pack for Shirahamachō-usazakiminami in September

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

In September, Shirahamachō-usazakiminami sees daytime highs around 26°C and nights near 22°C. Worth packing: light clothes and rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Shirahamachō-usazakiminami in September

The nearest coast averages about 26°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 19 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 7 to Nov 13 — about 5.3 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec16Cool

UV index in Shirahamachō-usazakiminami 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 Shirahamachō-usazakiminami peaks around July 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 12UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Shirahamachō-usazakiminami 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 Shirahamachō-usazakiminami is worst in April — around 26 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1625 µg/m³Oct 1914 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar24Moderate
Apr26Moderate
May24Moderate
Jun21Moderate
Jul22Moderate
Aug24Moderate
Sep17Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Shirahamachō-usazakiminami?

Shirahamachō-usazakiminami sits at 34.8°N, 134.7°E, 2 m above sea level, in Japan. The nearest listed city is Himeji, 4.0 km away.

Topography around Shirahamachō-usazakiminami

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

Within 3 km, the terrain around Shirahamachō-usazakiminami has only modest variations in elevation — a maximum elevation change of 159 m around an average of 15 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 436 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,489 m.

The land around Shirahamachō-usazakiminami is covered by artificial surfaces (38%), trees (27%) and water (26%) within 3 km, water (39%), artificial surfaces (27%) and trees (25%) within 16 km, and trees (54%) and water (29%) within 80 km.

3 km
159 m
16 km
436 m
80 km
1,489 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Himeji 4.0 km · Takasago 7.0 km · Kakogawachō-honmachi 10 km · Ikaruga 14 km · Tatsuno 17 km · Higashinozoe 17 km · Tatsunochō-tominaga 18 km · Inami 18 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 Shirahamachō-usazakiminami (34.7833°, 134.7167°, elevation 2 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).