Tsugaru weather in September

In September, Tsugaru sees average daytime highs of 23°C and overnight lows near 16°C, with 148 mm of rain across 13.3 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 25°C in the first days to 20°C by the end. The sky is clear or mostly clear about 20% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Tsugaru's 6th-clearest and 9th-windiest month. For the whole year in context, see Tsugaru's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
16°
10th coldest
Rainfall
148 mm
13.3 wet days
Daylight
12 h 18 min
5:25 AM – 5:41 PM
Cloud cover
68%
6th clearest
Wind
8 km/h
9th windiest
Solar energy
3.77 kWh/m²
Travel score
6.0
out of 10

Tsugaru is city in Aomori Prefecture, Japan.

Density
122/km²
people per km²
Founded
2005

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 Tsugaru reaches about 23°C in the afternoon and slips back to 16°C overnight — a 7°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)
12519
22518
32518
42518
52518
62518
72518
82417
92417
102417
112417
122417
132316
142316
152316
162316
172315
182215
192215
202215
212214
222214
232114
242114
252113
262113
272113
282013
292013
302012

How September really feels in Tsugaru

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.

Tsugaru 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 / -5°7415.920.49.40.0
Feb / -4°7114.717.110.40.0
Mar / -2°8915.411.811.70.3
Apr12° / 8713.32.313.13.1
May18° / 9812.5014.25.4
Jun22° / 14°9811.8014.96.1
Jul25° / 19°14914.8014.65.9
Aug27° / 20°16915.2013.65.7
Sep23° / 16°14813.3012.36.0
Oct17° / 11913.50.110.94.8
Nov / 10215.54.89.71.8
Dec / -2°9717.316.89.10.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% 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 64%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13367
23367
33268
43268
53367
63367
73367
83367
93565
103565
113664
123565
133565
143664
153664
163763
173763
183664
193862
203862
213862
223862
233961
243862
253862
263961
273961
283961
293961
304060

Chance of precipitation in September

Any precipitation

Tsugaru gets around 148 mm of rain over 13.3 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 (%)
149
249
349
449
549
649
748
848
948
1047
1147
1246
1346
1445
1545
1644
1744
1843
1943
2043
2143
2243
2343
2443
2543
2644
2744
2844
2945
3045

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 21% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1216323217
2217333116
3318343015
4320352914
5421352813
6422352712
7523352511
872435249
982535238
10102635227
11122734217
12142834196
13162833185
14182932174
15213031153
16243029143
17263128132
18293226112
19313225102
2034322491
2136332281
2239332161
2341331951
2443331841
2546331741
2648331530
2751331420
2852331320
2955321120
3058311010

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 5:10 AM to 5:39 AM, and sunset from 6:07 PM to 5:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:106:07
212.95:116:05
312.95:126:03
412.85:136:02
512.85:146:00
612.75:155:58
712.75:165:56
812.65:175:55
912.65:185:53
1012.55:195:51
1112.55:205:49
1212.55:215:48
1312.45:225:46
1412.45:235:44
1512.35:245:42
1612.35:255:41
1712.25:265:39
1812.25:275:37
1912.15:285:35
2012.15:295:34
2112.05:305:32
2212.05:315:30
2311.95:325:28
2411.95:335:27
2511.85:345:25
2611.85:355:23
2711.85:365:21
2811.75:375:20
2911.75:385:18
3011.65:395:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.77 kWh/m².

For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 5.49 kWh/m² in May across the year — September's 3.77 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.0Bright
44.0Bright
54.0Moderate
64.0Moderate
73.9Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.7Moderate
173.7Moderate
183.7Moderate
193.7Moderate
203.6Moderate
213.6Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.4Moderate
303.4Moderate
Planning a trip in September

Hazard calendar for Tsugaru

In seasonPeak

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

Tsugaru 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 Tsugaru?

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

6.0
Sightseeing
2nd-best month of the year
4.5
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Tsugaru for sightseeing.

What to pack for Tsugaru in September

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

In September, Tsugaru sees daytime highs around 23°C and nights near 16°C. Pack rain gear. Worth having: light clothes. About 13 days see rain.

rain gearlight clothes

Sea temperature near Tsugaru in September

The nearest coast averages about 24°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 25 km away) is warmest in August at about 24°C and coldest in March near 8°C.

It's comfortable for a long swim from Jul 10 to Oct 16 — about 3.3 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb9Bracing
Mar8Bracing
Apr9Bracing
May12Bracing
Jun17Cool
Jul21Refreshing
Aug24Warm
Sep24Refreshing
Oct20Refreshing
Nov16Cool
Dec13Bracing

UV index in Tsugaru in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tsugaru peaks around August 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 19UV 8Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar3Moderate
Apr6High
May8Very high
Jun8Very high
Jul5Moderate
Aug9Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Tsugaru 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 Tsugaru is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1620 µg/m³Dec 169 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb13Moderate
Mar18Moderate
Apr20Moderate
May18Moderate
Jun13Moderate
Jul12Good
Aug10Good
Sep10Good
Oct10Good
Nov9Good
Dec8Good
Location & terrain

Where is Tsugaru?

Tsugaru sits at 40.8°N, 140.4°E, 6 m above sea level, in Japan. The nearest listed city is Shimokizukuri, 3.0 km away.

Topography around Tsugaru

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

Within 3 km, the terrain around Tsugaru has only modest variations in elevation — a maximum elevation change of 14 m around an average of 7 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 867 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,585 m.

The land around Tsugaru is covered by cropland (66%) within 3 km, trees (41%) and cropland (40%) within 16 km, and trees (46%) and water (45%) within 80 km.

3 km
14 m
16 km
867 m
80 km
1,585 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Shimokizukuri 3.0 km · Goshogawara 3.0 km · Namioka 19 km · Kuroishi 23 km · Hirosaki 24 km · Aomori 28 km · Hirakawa 28 km · Ōdate 61 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 Tsugaru (40.8036°, 140.403°, elevation 6 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).