Katagami weather in September

In September, Katagami sees average daytime highs of 24°C and overnight lows near 19°C, with 168 mm of rain across 13.9 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 22°C by the end. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Katagami's 5th-clearest and 9th-windiest month. For the whole year in context, see Katagami's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
168 mm
13.9 wet days
Daylight
12 h 18 min
5:27 AM – 5:42 PM
Cloud cover
66%
5th clearest
Wind
12 km/h
9th windiest
Solar energy
3.94 kWh/m²
Travel score
6.0
out of 10

Katagami is city in Akita Prefecture, Japan.

Density
325/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 26°C in the first days to 22°C by the end.

A typical September day in Katagami reaches about 24°C in the afternoon and slips back to 19°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 27°C. Set against its neighbours, September runs about 3°C cooler than August and about 6°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12621
22621
32621
42621
52621
62621
72620
82520
92520
102520
112520
122519
132519
142419
152419
162419
172418
182418
192318
202318
212318
222317
232317
242217
252217
262216
272216
282216
292216
302116

How September really feels in Katagami

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.

Katagami 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 / -1°9619.118.59.50.0
Feb / -1°8116.214.210.40.0
Mar / 9715.97.611.70.8
Apr13° / 9713.20.5133.2
May18° / 12°11212.6014.25.3
Jun22° / 17°11311.3014.86.2
Jul26° / 21°19114.8014.55.8
Aug27° / 23°19314.9013.65.7
Sep24° / 19°16813.9012.36.0
Oct18° / 12°15114.3010.95.2
Nov12° / 14217.91.69.82.5
Dec / 13521.411.29.20.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% 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 61%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13862
23862
33763
43763
53862
63862
73862
83862
93961
104060
114060
123961
133961
144060
153961
163961
174060
184060
193961
203961
214060
224060
233961
244060
254060
264060
274060
284060
294060
304060

Chance of precipitation in September

Any precipitation

Katagami gets around 168 mm of rain over 13.9 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 47% and peaks near 51% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
151
251
351
451
551
651
750
850
950
1049
1149
1249
1349
1448
1548
1647
1747
1846
1946
2045
2145
2245
2344
2444
2544
2644
2744
2844
2944
3044

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 27% of days. Sticky, muggy-or-worse air turns up on roughly 35% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1192136275
2192336265
31102436254
41112536234
51122636223
62132736203
72142835193
82152935172
93172934162
104182933152
115192932141
126212931121
137222929111
149232928101
151025292690
161226292480
171427292270
181628292170
191729281960
201930281750
212131281550
222332271440
232532271230
242733271130
25293326920
26313326820
27333425710
28353424610
29373423510
30393422400

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min 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 78 minutes over September. Sunrise moves from 5:12 AM to 5:40 AM, and sunset from 6:07 PM to 5:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:126:07
212.95:136:06
312.85:146:04
412.85:156:02
512.75:166:01
612.75:175:59
712.75:185:57
812.65:195:56
912.65:205:54
1012.55:215:52
1112.55:225:51
1212.45:235:49
1312.45:245:47
1412.35:255:46
1512.35:265:44
1612.35:275:42
1712.25:285:40
1812.25:295:39
1912.15:305:37
2012.15:305:35
2112.05:315:33
2212.05:325:32
2311.95:335:30
2411.95:345:28
2511.95:355:27
2611.85:365:25
2711.85:375:23
2811.75:385:22
2911.75:395:20
3011.65:405:18

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.94 kWh/m².

For context, solar energy here swings from a low near 1.59 kWh/m² to a high of 5.62 kWh/m² in June across the year — September's 3.94 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.3Bright
34.3Bright
44.3Bright
54.2Bright
64.2Bright
74.2Bright
84.1Bright
94.1Bright
104.1Bright
114.0Bright
124.0Moderate
134.0Moderate
143.9Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.8Moderate
213.8Moderate
223.7Moderate
233.7Moderate
243.7Moderate
253.7Moderate
263.6Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Hazard calendar for Katagami

In seasonPeak

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

Katagami 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 Katagami?

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
5.0
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Katagami for sightseeing.

What to pack for Katagami in September

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

In September, Katagami sees daytime highs around 24°C and nights near 19°C. Pack rain gear. Worth having: light clothes. About 14 days see rain.

rain gearlight clothes

Sea temperature near Katagami 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 offshore is warmest in August at about 25°C and coldest in March near 9°C.

It's comfortable for a long swim from Jun 30 to Oct 23 — about 3.8 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb9Bracing
Mar9Bracing
Apr10Bracing
May14Bracing
Jun18Cool
Jul22Refreshing
Aug25Warm
Sep24Warm
Oct21Refreshing
Nov17Cool
Dec14Bracing

UV index in Katagami 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 Katagami 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 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 19UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr6High
May8Very high
Jun7Very high
Jul5Moderate
Aug9Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Katagami 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 Katagami is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 149 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun15Moderate
Jul13Moderate
Aug11Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Katagami?

Katagami sits at 39.9°N, 140.0°E, 10 m above sea level, in Japan. The nearest listed city is Tennō, 4.0 km away.

Topography around Katagami

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

Within 3 km, the terrain around Katagami has only modest variations in elevation — a maximum elevation change of 28 m around an average of 4 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 477 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,621 m.

The land around Katagami is covered by cropland (40%), trees (22%) and water (20%) within 3 km, water (36%), trees (31%) and cropland (25%) within 16 km, and trees (52%) and water (38%) within 80 km.

3 km
28 m
16 km
477 m
80 km
1,621 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Tennō 4.0 km · Oga 13 km · Akita 21 km · Moritake 25 km · Noshiro 37 km · Kita-Akita 49 km · Takanosu 49 km · Yurihonjō 55 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 Katagami (39.8787°, 139.9977°, elevation 10 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).