Hanawa weather in September

In September, Hanawa sees average daytime highs of 22°C and overnight lows near 14°C, with 148 mm of rain across 14 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 24°C in the first days to 19°C by the end. The sky is clear or mostly clear about 16% of the time in September, and the air most often feels dry.

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 Hanawa's 5th-clearest and 9th-windiest month. For the whole year in context, see Hanawa's year-round climate.

Daytime high
22°
3rd warmest
Overnight low
14°
10th coldest
Rainfall
148 mm
14 wet days
Daylight
12 h 18 min
5:23 AM – 5:39 PM
Cloud cover
71%
5th clearest
Wind
8 km/h
9th windiest
Solar energy
3.64 kWh/m²
Travel score
5.7
out of 10

Hanawa is city in Akita prefecture, Japan.

Density
52/km²
people per km²
Founded
1972

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 24°C in the first days to 19°C by the end.

A typical September day in Hanawa reaches about 22°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 25°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)
12417
22417
32417
42417
52417
62416
72316
82316
92316
102316
112315
122315
132215
142215
152214
162214
172214
182114
192113
202113
212113
222113
232012
242012
252012
262012
271911
281911
291911
301911

How September really feels in Hanawa

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.

Hanawa 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° / -7°8215.220.49.50.0
Feb / -7°7914.516.810.40.0
Mar / -4°10716.614.511.70.2
Apr11° / 10314.64.3132.5
May17° / 10813.80.114.25.0
Jun21° / 13°11613.7014.85.6
Jul24° / 18°17217014.65.5
Aug26° / 19°16716.5013.65.6
Sep22° / 14°14814012.35.7
Oct16° / 13113.50.210.94.4
Nov / 10915.86.19.81.3
Dec / -5°10416.217.29.20.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13070
23070
33070
43070
53070
63169
73169
83169
93268
103268
113268
123466
133466
143466
153367
163565
173565
183565
193565
203466
213565
223565
233565
243565
253565
263466
273466
283565
293565
303565

Chance of precipitation in September

Any precipitation

Hanawa gets around 148 mm of rain over 14 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 48% and peaks near 54% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
154
253
353
453
553
652
752
851
951
1050
1150
1249
1349
1449
1548
1647
1747
1846
1946
2045
2145
2245
2344
2444
2544
2644
2744
2844
2944
3044

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
161935329
262035318
372136307
472136287
582236276
692336265
7112436245
8122536234
9142635224
10162634203
11182733192
12212732182
13242831162
14262829151
15292828141
16332826121
17362824111
18392822100
1942282190
2045281980
2148281770
2250281660
2354271450
2456271340
2559271130
2661261030
276425920
286724810
296824710
307023610

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
238calm
248calm
258calm
268calm
278calm
289calm
299calm
309calm

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 5:09 AM to 5:37 AM, and sunset from 6:05 PM to 5:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:096:05
212.95:106:03
312.85:116:01
412.85:126:00
512.85:135:58
612.75:145:56
712.75:145:54
812.65:155:53
912.65:165:51
1012.55:175:49
1112.55:185:48
1212.45:195:46
1312.45:205:44
1412.45:215:42
1512.35:225:41
1612.35:235:39
1712.25:245:37
1812.25:255:36
1912.15:265:34
2012.15:275:32
2112.05:285:30
2212.05:295:29
2311.95:305:27
2411.95:315:25
2511.95:325:23
2611.85:335:22
2711.85:345:20
2811.75:355:18
2911.75:365:17
3011.65:375:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.64 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 5.33 kWh/m² in May across the year — September's 3.64 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.7Moderate
103.7Moderate
113.7Moderate
123.7Moderate
133.6Moderate
143.6Moderate
153.6Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.4Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.3Moderate
303.3Moderate
Planning a trip in September

Is September a good time to visit Hanawa?

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

5.7
Sightseeing
1st-best month of the year
3.8
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Hanawa for sightseeing.

What to pack for Hanawa in September

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

In September, Hanawa sees daytime highs around 22°C and nights near 14°C. Pack rain gear. About 14 days see rain.

rain gear

UV index in Hanawa 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 Hanawa peaks around August 18 at about 9 (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 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighVery highHighModerateLowAug 18UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul6High
Aug9Very high
Sep7High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Hanawa 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 Hanawa is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1421 µg/m³Dec 1510 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May19Moderate
Jun14Moderate
Jul12Moderate
Aug12Good
Sep12Good
Oct12Good
Nov10Good
Dec10Good
Location & terrain

Where is Hanawa?

Hanawa sits at 40.2°N, 140.8°E, 144 m above sea level, in Japan. The nearest listed city is Ōdate, 22 km away.

Topography around Hanawa

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

Within 3 km, the terrain around Hanawa has significant variations in elevation — a maximum elevation change of 394 m around an average of 215 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,059 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,118 m.

The land around Hanawa is covered by trees (65%) within 3 km, trees (89%) within 16 km, and trees (81%) within 80 km.

3 km
394 m
16 km
1,059 m
80 km
2,118 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Ōdate 22 km · Kita-Akita 33 km · Takanosu 36 km · Hachimantai 43 km · Ninohe 46 km · Nanaku 48 km · Hirakawa 48 km · Takizawa 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 Hanawa (40.1836°, 140.7872°, elevation 144 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. 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).