Ninohe weather in September

In September, Ninohe sees average daytime highs of 23°C and overnight lows near 15°C, with 129 mm of rain across 12.2 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 19% 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 Ninohe's 9th-clearest and 9th-windiest month. For the whole year in context, see Ninohe's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
15°
10th coldest
Rainfall
129 mm
12.2 wet days
Daylight
12 h 18 min
5:21 AM – 5:37 PM
Cloud cover
69%
9th clearest
Wind
8 km/h
9th windiest
Solar energy
3.66 kWh/m²
Travel score
6.1
out of 10

Ninohe is city in Iwate Prefecture, Japan.

Density
61/km²
people per km²
Founded
2006

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 Ninohe reaches about 23°C in the afternoon and slips back to 15°C overnight — a 8°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)
12518
22518
32517
42517
52517
62417
72417
82417
92416
102416
112416
122316
132315
142315
152315
162315
172214
182214
192214
202214
212113
222113
232113
242113
252112
262012
272012
282012
292012
302011

How September really feels in Ninohe

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.

Ninohe 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 / -7°549.410.99.50.0
Feb / -7°559.410.310.40.0
Mar / -3°8413.39.411.70.5
Apr13° / 8513.32.9133.3
May18° / 88120.214.25.5
Jun22° / 14°10112.5014.85.9
Jul25° / 18°13715.3014.65.8
Aug26° / 19°13514.3013.65.8
Sep23° / 15°12912.2012.36.1
Oct17° / 10510.5010.95.1
Nov10° / 6811.62.89.82.0
Dec / -4°6610.99.69.20.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% 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 (%)
13070
22971
32971
42971
53169
63268
73268
83268
93268
103367
113367
123367
133466
143466
153466
163565
173565
183664
193664
203664
213763
223763
233763
243862
253961
264060
274060
284060
294159
304060

Chance of precipitation in September

Any precipitation

Ninohe gets around 129 mm of rain over 12.2 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 42% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
146
246
346
445
545
645
745
845
945
1044
1144
1244
1344
1443
1543
1642
1742
1841
1940
2040
2139
2239
2339
2439
2538
2638
2738
2838
2938
3038

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 32% 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 (%)
151935329
262035309
362136308
472136287
582236276
692336266
7102336255
8122436244
9142535234
10152534223
11172634203
12202633192
13222731182
14252730162
15282729151
16312827141
17342825121
18362824111
19392822101
2042292081
2145291970
2248291760
2350291650
2454281440
2555281340
2657281230
2761271020
286326920
296525910
306724810

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
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
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 5:06 AM to 5:35 AM, and sunset from 6:03 PM to 5:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:066:03
212.95:076:01
312.85:085:59
412.85:095:58
512.85:105:56
612.75:115:54
712.75:125:52
812.65:135:51
912.65:145:49
1012.55:155:47
1112.55:165:46
1212.45:175:44
1312.45:185:42
1412.45:195:40
1512.35:205:39
1612.35:215:37
1712.25:225:35
1812.25:235:33
1912.15:245:32
2012.15:255:30
2112.05:265:28
2212.05:275:27
2311.95:285:25
2411.95:295:23
2511.95:305:21
2611.85:315:20
2711.85:325:18
2811.75:335:16
2911.75:345:14
3011.65:355:13

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.66 kWh/m².

For context, solar energy here swings from a low near 1.84 kWh/m² to a high of 5.38 kWh/m² in May across the year — September's 3.66 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
93.8Moderate
103.7Moderate
113.7Moderate
123.7Moderate
133.7Moderate
143.6Moderate
153.6Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.6Moderate
203.5Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.4Moderate
303.3Moderate
Planning a trip in September

Hazard calendar for Ninohe

In seasonPeak

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

Ninohe 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 Ninohe?

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
4.4
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Ninohe for sightseeing.

What to pack for Ninohe in September

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

In September, Ninohe sees daytime highs around 23°C and nights near 15°C. Worth packing: light clothes and rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Ninohe in September

The nearest coast averages about 21°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 46 km away) is warmest in August at about 21°C and coldest in March near 7°C.

It's comfortable for a long swim from Aug 8 to Sep 26 — about 1.6 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan10Bracing
Feb8Bracing
Mar7Bracing
Apr8Bracing
May10Bracing
Jun14Bracing
Jul18Cool
Aug21Refreshing
Sep21Refreshing
Oct18Cool
Nov15Cool
Dec12Bracing

UV index in Ninohe 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 Ninohe 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
Feb3Moderate
Mar3Moderate
Apr6High
May8Very high
Jun7Very high
Jul5Moderate
Aug9Very high
Sep7High
Oct5Moderate
Nov2Moderate
Dec1Low

Air quality in Ninohe 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 Ninohe 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 Ninohe?

Ninohe sits at 40.3°N, 141.3°E, 261 m above sea level, in Japan. The nearest listed city is Nanaku, 13 km away.

Topography around Ninohe

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

Within 3 km, the terrain around Ninohe has significant variations in elevation — a maximum elevation change of 332 m around an average of 190 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 837 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,128 m.

The land around Ninohe is covered by trees (81%) within 3 km, trees (90%) within 16 km, and trees (69%) and water (22%) within 80 km.

3 km
332 m
16 km
837 m
80 km
2,128 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Nanaku 13 km · Hakurōmachi 26 km · Ōno 27 km · Hachinohe 28 km · Towada 38 km · Hitokawame 40 km · Kuji 40 km · Misawa 45 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 Ninohe (40.2908°, 141.3133°, elevation 261 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).