Kitaibaraki weather in September

In September, Kitaibaraki sees average daytime highs of 24°C and overnight lows near 20°C, with 187 mm of rain across 14.9 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 26°C in the first days to 22°C by the end. The sky is clear or mostly clear about 19% of the time in September, and the air most often feels muggy.

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 Kitaibaraki's 10th-clearest and 8th-windiest month. For the whole year in context, see Kitaibaraki's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
20°
10th coldest
Rainfall
187 mm
14.9 wet days
Daylight
12 h 12 min
5:24 AM – 5:38 PM
Cloud cover
69%
10th clearest
Wind
11 km/h
8th windiest
Solar energy
3.87 kWh/m²
Travel score
5.8
out of 10

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 Kitaibaraki reaches about 24°C in the afternoon and slips back to 20°C overnight — a 3°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 5°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12622
22622
32622
42622
52522
62522
72522
82522
92522
102521
112521
122521
132421
142421
152421
162420
172420
182420
192320
202320
212320
222319
232319
242319
252219
262219
272219
282218
292218
302218

How September really feels in Kitaibaraki

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.

Kitaibaraki 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 / 667.31.69.81.0
Feb / 647.51.910.61.0
Mar10° / 11812.41.411.72.0
Apr14° / 12511.90.212.93.8
May18° / 13°14012.5013.95.4
Jun21° / 18°14614.3014.55.5
Jul25° / 22°17915.4014.35.7
Aug27° / 23°13613.5013.45.9
Sep24° / 20°18714.9012.25.8
Oct19° / 15°20213.30115.7
Nov14° / 10°1029.30104.4
Dec10° / 6780.49.52.3

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 18% of September, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23763
33763
43664
53664
63664
73664
83763
93763
103763
113763
123664
133664
143664
153664
163565
173565
183565
193565
203664
213565
223565
233565
243565
253565
263664
273763
283763
293763
303862

Chance of precipitation in September

Any precipitation

Kitaibaraki gets around 187 mm of rain over 14.9 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 50% and peaks near 52% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
150
251
351
452
552
652
752
852
952
1052
1152
1252
1351
1451
1551
1650
1750
1849
1949
2049
2148
2248
2347
2447
2547
2647
2747
2847
2947
3047

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 31% of days. Sticky, muggy-or-worse air turns up on roughly 57% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1011134486
2011235475
3011236474
4021336464
5021436453
6021536433
7031636423
8041637412
9151737392
10161837372
11161937351
12172037331
13282236311
14292336291
153112435271
164122634240
174132733220
185142932200
196153031180
207163130160
218183228140
229193327120
2310203426100
241221352490
251321362380
261422362160
271523372050
281624371940
291724381740
301825381630

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 5:12 AM to 5:36 AM, and sunset from 6:01 PM to 5:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:126:01
212.85:136:00
312.75:145:58
412.75:145:57
512.75:155:55
612.65:165:54
712.65:175:52
812.65:185:51
912.55:195:49
1012.55:195:48
1112.45:205:46
1212.45:215:45
1312.45:225:43
1412.35:235:41
1512.35:245:40
1612.25:245:38
1712.25:255:37
1812.25:265:35
1912.15:275:34
2012.15:285:32
2112.05:295:30
2212.05:295:29
2311.95:305:27
2411.95:315:26
2511.95:325:24
2611.85:335:23
2711.85:345:21
2811.75:355:19
2911.75:355:18
3011.75:365:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.87 kWh/m².

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 5.4 kWh/m² in May across the year — September's 3.87 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
104.0Bright
114.0Bright
124.0Moderate
134.0Moderate
143.9Moderate
153.9Moderate
163.8Moderate
173.8Moderate
183.8Moderate
193.7Moderate
203.7Moderate
213.7Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.4Moderate
293.4Moderate
303.4Moderate
Planning a trip in September

Hazard calendar for Kitaibaraki

In seasonPeak

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

Kitaibaraki 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 Kitaibaraki?

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

5.8
Sightseeing
2nd-best month of the year
4.8
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Kitaibaraki for sightseeing.

What to pack for Kitaibaraki in September

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

In September, Kitaibaraki sees daytime highs around 24°C and nights near 20°C. Pack rain gear. Worth having: light clothes. About 15 days see rain.

rain gearlight clothes

Sea temperature near Kitaibaraki in September

The nearest coast averages about 23°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 15 km away) is warmest in August at about 24°C and coldest in March near 12°C.

It's comfortable for a long swim from Jul 1 to Oct 22 — about 3.7 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May16Cool
Jun19Cool
Jul21Refreshing
Aug24Refreshing
Sep23Refreshing
Oct20Refreshing
Nov18Cool
Dec16Cool

UV index in Kitaibaraki in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kitaibaraki peaks around July 23 at about 10 (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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 23UV 10Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Low

Air quality in Kitaibaraki 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 Kitaibaraki is worst in April — around 19 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 2219 µg/m³Dec 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar17Moderate
Apr19Moderate
May19Moderate
Jun14Moderate
Jul12Moderate
Aug11Good
Sep10Good
Oct10Good
Nov9Good
Dec7Good
Location & terrain

Where is Kitaibaraki?

Kitaibaraki sits at 36.8°N, 140.7°E, 5 m above sea level, in Japan. The nearest listed city is Takahagi, 8.0 km away.

Topography around Kitaibaraki

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

Within 3 km, the terrain around Kitaibaraki has only modest variations in elevation — a maximum elevation change of 103 m around an average of 12 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 876 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,885 m.

The land around Kitaibaraki is covered by water (47%) and artificial surfaces (20%) within 3 km, water (47%) and trees (41%) within 16 km, and trees (51%) and water (30%) within 80 km.

3 km
103 m
16 km
876 m
80 km
1,885 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Takahagi 8.0 km · Hitachi 23 km · Iwaki 32 km · Hitachi-ota 33 km · Daigo 36 km · Tokai 39 km · Funaishikawa 39 km · Hitachiomiya 40 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 Kitaibaraki (36.7867°, 140.749°, elevation 5 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).