Ushitsu weather in September

In September, Ushitsu sees average daytime highs of 25°C and overnight lows near 22°C, with 202 mm of rain across 13.8 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 23°C by the end. The sky is clear or mostly clear about 28% 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 Ushitsu's 7th-clearest and 8th-windiest month. For the whole year in context, see Ushitsu's year-round climate.

Daytime high
25°
3rd warmest
Overnight low
22°
10th coldest
Rainfall
202 mm
13.8 wet days
Daylight
12 h 12 min
5:39 AM – 5:53 PM
Cloud cover
64%
7th clearest
Wind
16 km/h
8th windiest
Solar energy
4.13 kWh/m²
Travel score
6.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 23°C by the end.

A typical September day in Ushitsu reaches about 25°C in the afternoon and slips back to 22°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 27°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12724
22724
32624
42624
52624
62624
72624
82624
92623
102623
112523
122523
132523
142523
152523
162522
172422
182422
192422
202422
212422
222421
232321
242321
252321
262321
272321
282320
292220
302220

How September really feels in Ushitsu

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.

Ushitsu weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 18623.28.49.70.5
Feb / 12317.96.810.60.6
Mar / 133162.311.71.6
Apr13° / 10°11912.40.112.93.4
May17° / 14°12311.60145.5
Jun21° / 19°15311.2014.56.1
Jul26° / 23°23314.4014.35.9
Aug28° / 25°15812013.46.1
Sep25° / 22°20213.8012.36.1
Oct20° / 17°16914.20115.7
Nov15° / 12°18518.10103.6
Dec10° / 218233.89.51.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% 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 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24357
34357
44357
54456
64456
74555
84555
94555
104555
114555
124555
134456
144456
154456
164456
174357
184357
194159
204159
214159
224159
234159
244159
254159
264159
274159
284159
294159
304159

Chance of precipitation in September

Any precipitation

Ushitsu gets around 202 mm of rain over 13.8 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 46% and peaks near 49% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
145
246
346
447
547
648
748
849
949
1049
1149
1249
1348
1448
1547
1647
1746
1846
1945
2045
2145
2244
2344
2444
2544
2644
2744
2845
2945
3045

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 30% 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 (%)
10111344211
20112354110
3011336419
4021535399
5021636388
6031736377
7031836366
8142035346
9142136335
10152236324
11262336304
12272435283
13372635263
14492734252
154102833232
165113033211
176123132191
187133231171
197143330151
208163428131
219173527120
2210183526100
231120362490
241221372370
251322372260
261424382050
271525381940
281626381730
291727371630
301828371520

Wind in September

Winds average 16 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light 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 5:26 AM to 5:51 AM, and sunset from 6:16 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:266:16
212.85:276:15
312.85:286:13
412.75:286:12
512.75:296:10
612.65:306:09
712.65:316:07
812.65:326:05
912.55:336:04
1012.55:346:02
1112.45:346:01
1212.45:355:59
1312.45:365:58
1412.35:375:56
1512.35:385:54
1612.25:395:53
1712.25:405:51
1812.25:405:50
1912.15:415:48
2012.15:425:46
2112.05:435:45
2212.05:445:43
2311.95:455:42
2411.95:465:40
2511.95:465:38
2611.85:475:37
2711.85:485:35
2811.75:495:34
2911.75:505:32
3011.75:515:31

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.13 kWh/m².

For context, solar energy here swings from a low near 1.8 kWh/m² to a high of 5.83 kWh/m² in May across the year — September's 4.13 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.4Bright
94.3Bright
104.3Bright
114.2Bright
124.2Bright
134.2Bright
144.1Bright
154.1Bright
164.1Bright
174.0Bright
184.0Bright
194.0Bright
204.0Moderate
214.0Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.8Moderate
303.7Moderate
Planning a trip in September

Hazard calendar for Ushitsu

In seasonPeak

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

Ushitsu 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 Ushitsu?

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

6.1
Sightseeing
1st-best month of the year
5.3
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Ushitsu for sightseeing.

What to pack for Ushitsu in September

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

In September, Ushitsu sees daytime highs around 25°C and nights near 22°C. Pack rain gear. Worth having: light clothes. About 14 days see rain.

rain gearlight clothes

Sea temperature near Ushitsu 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 10°C.

It's comfortable for a long swim from Jun 20 to Nov 1 — about 4.4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar10Bracing
Apr11Bracing
May15Cool
Jun20Cool
Jul23Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Ushitsu 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 Ushitsu peaks around August 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 15UV 10Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug10Very high
Sep9Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Ushitsu 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 Ushitsu is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (September, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1020 µg/m³Sep 219 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr20Moderate
May18Moderate
Jun14Moderate
Jul12Good
Aug10Good
Sep9Good
Oct9Good
Nov10Good
Dec10Good
Location & terrain

Where is Ushitsu?

Ushitsu sits at 37.3°N, 137.2°E, 1 m above sea level, in Japan. The nearest listed city is Anamizu, 24 km away.

Topography around Ushitsu

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

Within 3 km, the terrain around Ushitsu has only modest variations in elevation — a maximum elevation change of 205 m around an average of 79 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 467 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,831 m.

The land around Ushitsu is covered by trees (66%) and water (29%) within 3 km, trees (51%) and water (45%) within 16 km, and water (71%) and trees (22%) within 80 km.

3 km
205 m
16 km
467 m
80 km
2,831 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Anamizu 24 km · Wajima 25 km · Nanao 33 km · Hitoto 42 km · Oshima 49 km · Nyūzen 51 km · Himimachi 52 km · Kurobe-shi 52 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 Ushitsu (37.3079°, 137.1522°, elevation 1 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).