Uozu weather in September

In September, Uozu sees average daytime highs of 23°C and overnight lows near 17°C, with 243 mm of rain across 17.6 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 2nd-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 18% 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 Uozu's 8th-clearest and 11th-windiest month. For the whole year in context, see Uozu's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
17°
10th coldest
Rainfall
243 mm
17.6 wet days
Daylight
12 h 12 min
5:38 AM – 5:52 PM
Cloud cover
70%
8th clearest
Wind
6 km/h
11th windiest
Solar energy
3.98 kWh/m²
Travel score
5.3
out of 10

Uozu is city in Toyama Prefecture, Japan.

Density
229/km²
people per km²
Founded
1952

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 Uozu reaches about 23°C in the afternoon and slips back to 17°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 26°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)
12520
22520
32520
42519
52519
62519
72419
82419
92419
102418
112418
122318
132318
142318
152318
162317
172317
182217
192217
202216
212216
222216
232116
242116
252115
262115
272115
282015
292015
302014

How September really feels in Uozu

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.

Uozu weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°24224.623.59.80.0
Feb / -3°19520.41910.60.0
Mar / -1°20620.115.611.70.4
Apr12° / 17115.45.312.92.8
May18° / 11°18015.60.413.95.0
Jun21° / 16°23316.5014.55.2
Jul25° / 20°31521.1014.34.9
Aug27° / 21°21719.2013.45.2
Sep23° / 17°24317.6012.25.3
Oct17° / 11°20916.10.4114.7
Nov11° / 19318.15.7102.2
Dec / -0°24022.617.89.50.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23565
33565
43466
53466
63466
73565
83664
93565
103565
113565
123565
133565
143565
153664
163565
173466
183466
193565
203466
213466
223466
233466
243466
253466
263466
273367
283466
293466
303565

Chance of precipitation in September

Any precipitation

Uozu gets around 243 mm of rain over 17.6 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 59% and peaks near 65% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
164
265
365
465
565
665
765
865
965
1064
1164
1263
1362
1461
1560
1659
1758
1857
1956
2056
2155
2254
2354
2453
2553
2653
2753
2853
2954
3054

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 33% of days. Sticky, muggy-or-worse air turns up on roughly 32% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11629577
21631557
31732546
41733536
51834516
62935495
721036485
821137464
931237443
1041338423
1141438403
1251639382
1371739362
1481939332
1592138311
16102238281
17122438261
18132637231
19152736210
20172935190
21183134170
22203233150
23223432130
24243530110
2525372990
2627382780
2729392670
2831402450
2933402340
3035412140

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 5:25 AM to 5:50 AM, and sunset from 6:15 PM to 5:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:256:15
212.85:266:13
312.75:276:12
412.75:286:10
512.75:296:09
612.65:306:07
712.65:306:06
812.65:316:04
912.55:326:03
1012.55:336:01
1112.45:346:00
1212.45:345:58
1312.45:355:56
1412.35:365:55
1512.35:375:53
1612.25:385:52
1712.25:395:50
1812.25:395:49
1912.15:405:47
2012.15:415:45
2112.05:425:44
2212.05:435:42
2311.95:445:41
2411.95:445:39
2511.95:455:38
2611.85:465:36
2711.85:475:34
2811.75:485:33
2911.75:495:31
3011.75:505:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.98 kWh/m².

For context, solar energy here swings from a low near 2.02 kWh/m² to a high of 5.66 kWh/m² in May across the year — September's 3.98 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.4Bright
34.4Bright
44.3Bright
54.3Bright
64.3Bright
74.2Bright
84.2Bright
94.1Bright
104.1Bright
114.1Bright
124.0Bright
134.0Bright
144.0Moderate
154.0Moderate
163.9Moderate
173.9Moderate
183.9Moderate
193.9Moderate
203.8Moderate
213.8Moderate
223.8Moderate
233.8Moderate
243.7Moderate
253.7Moderate
263.7Moderate
273.7Moderate
283.6Moderate
293.6Moderate
303.6Moderate
Planning a trip in September

Hazard calendar for Uozu

In seasonPeak

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

Uozu 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 Uozu?

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

5.3
Sightseeing
1st-best month of the year
4.0
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Uozu for sightseeing.

What to pack for Uozu in September

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

In September, Uozu sees daytime highs around 23°C and nights near 17°C. Pack rain gear. Worth having: light clothes. About 18 days see rain.

rain gearlight clothes

Sea temperature near Uozu 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 18 to Nov 3 — about 4.6 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar10Bracing
Apr11Bracing
May15Cool
Jun20Cool
Jul24Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Uozu 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 Uozu peaks around August 10 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 10UV 10Dec 20UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Uozu 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 Uozu is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1621 µg/m³Dec 139 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun18Moderate
Jul14Moderate
Aug12Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Uozu?

Uozu sits at 36.8°N, 137.4°E, 13 m above sea level, in Japan. The nearest listed city is Namerikawa, 6.0 km away.

Topography around Uozu

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

Within 3 km, the terrain around Uozu has only modest variations in elevation — a maximum elevation change of 228 m around an average of 35 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,841 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,123 m.

The land around Uozu is covered by artificial surfaces (34%), cropland (26%) and water (21%) within 3 km, trees (34%) and water (34%) within 16 km, and trees (57%) and water (31%) within 80 km.

3 km
228 m
16 km
1,841 m
80 km
3,123 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Namerikawa 6.0 km · Kamiichi 12 km · Kurobe-shi 12 km · Gohyakkoku 17 km · Nyūzen 18 km · Toyama 20 km · Imizu 25 km · Nishishinminato 29 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 Uozu (36.8°, 137.4°, elevation 13 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).