Kitsuki weather in September

In September, Kitsuki sees average daytime highs of 27°C and overnight lows near 22°C, with 177 mm of rain across 12.9 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 29°C in the first days to 25°C by the end. The sky is clear or mostly clear about 33% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Kitsuki's 6th-clearest and 9th-windiest month. For the whole year in context, see Kitsuki's year-round climate.

Daytime high
27°
3rd warmest
Overnight low
22°
10th coldest
Rainfall
177 mm
12.9 wet days
Daylight
12 h 12 min
6:02 AM – 6:14 PM
Cloud cover
61%
6th clearest
Wind
9 km/h
9th windiest
Solar energy
4.17 kWh/m²
Travel score
5.8
out of 10

Kitsuki is city in Ōita Prefecture, Japan.

Density
100/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 29°C in the first days to 25°C by the end.

A typical September day in Kitsuki reaches about 27°C in the afternoon and slips back to 22°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 30°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82824
92824
102823
112823
122823
132823
142823
152723
162722
172722
182722
192722
202722
212622
222621
232621
242621
252621
262621
272521
282520
292520
302520

How September really feels in Kitsuki

Once humidity and wind are folded in, September averages 3 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
3
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Kitsuki 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 / 546.70.9102.1
Feb10° / 648.10.810.82.3
Mar13° / 102110.111.73.7
Apr18° / 12°12110.2012.85.7
May23° / 17°13710.4013.76.6
Jun26° / 21°27515.1014.25.6
Jul30° / 25°23516.40144.2
Aug31° / 26°16514.4013.24.2
Sep27° / 22°17712.9012.25.8
Oct22° / 17°1247.6011.27.2
Nov17° / 12°717.3010.35.8
Dec12° / 556.40.19.83.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% 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 52%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24753
34753
44654
54654
64654
74753
84753
94753
104852
114753
124753
134852
144852
154852
164852
174753
184753
194753
204753
214753
224753
234852
244753
254852
264852
274951
284951
294951
305050

Chance of precipitation in September

Any precipitation

Kitsuki gets around 177 mm of rain over 12.9 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 42% and peaks near 48% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
148
248
348
448
547
647
747
847
947
1046
1146
1245
1344
1444
1543
1642
1742
1841
1941
2040
2140
2239
2338
2438
2537
2637
2736
2836
2935
3034

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 73% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1004225717
2004235716
3005245714
4005255713
5016265512
6017285311
7018295210
801929529
9021030508
10021131488
11031232467
12131432447
13141532426
14151633406
15161833385
16171933365
17182033344
18292232314
192102333303
202112433283
212122532263
223132632243
233142732222
243152831212
253162931192
264172930182
274193030161
284203129151
295213128141
305223227131

Wind in September

Winds average 9 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
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 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 60 minutes over September. Sunrise moves from 5:51 AM to 6:12 AM, and sunset from 6:35 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:516:35
212.75:526:34
312.75:536:32
412.65:536:31
512.65:546:30
612.65:556:28
712.55:566:27
812.55:566:25
912.55:576:24
1012.45:586:23
1112.45:586:21
1212.35:596:20
1312.36:006:18
1412.36:006:17
1512.26:016:15
1612.26:026:14
1712.26:026:13
1812.16:036:11
1912.16:046:10
2012.16:056:08
2112.06:056:07
2212.06:066:05
2312.06:076:04
2411.96:076:03
2511.96:086:01
2611.86:096:00
2711.86:095:58
2811.86:105:57
2911.76:115:55
3011.76:125:54

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.17 kWh/m².

For context, solar energy here swings from a low near 2.29 kWh/m² to a high of 5.46 kWh/m² in May across the year — September's 4.17 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.4Bright
84.4Bright
94.4Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.0Bright
234.0Bright
244.0Moderate
254.0Moderate
264.0Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Kitsuki

In seasonPeak

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

Kitsuki sits in the Pacific typhoon belt; the season peaks July–October.

Kitsuki's rainy season runs May–October, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Kitsuki?

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

5.8
Sightseeing
3rd-best month of the year
6.2
Beach & pool
1st-best month of the year

September is a reasonable time to visit Kitsuki for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Kitsuki in September

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

In September, Kitsuki sees daytime highs around 27°C and nights near 22°C. Pack light clothes. Worth having: rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Kitsuki in September

The nearest coast averages about 25°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 24 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 5 to Nov 20 — about 5.6 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb14Bracing
Mar14Bracing
Apr16Cool
May18Cool
Jun21Refreshing
Jul24Warm
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec18Cool

UV index in Kitsuki in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kitsuki peaks around June 20 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJun 20UV 10Dec 20UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Extreme
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Kitsuki 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 Kitsuki is worst in March — around 27 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2026 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar27Moderate
Apr24Moderate
May21Moderate
Jun18Moderate
Jul16Moderate
Aug19Moderate
Sep13Moderate
Oct12Good
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Kitsuki?

Kitsuki sits at 33.4°N, 131.6°E, 3 m above sea level, in Japan. The nearest listed city is Hiji, 10 km away.

Topography around Kitsuki

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

Within 3 km, the terrain around Kitsuki has only modest variations in elevation — a maximum elevation change of 135 m around an average of 32 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 620 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,799 m.

The land around Kitsuki is covered by trees (48%) within 3 km, trees (49%) and water (41%) within 16 km, and water (47%) and trees (45%) within 80 km.

3 km
135 m
16 km
620 m
80 km
1,799 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Hiji 10 km · Kunisaki 18 km · Beppu 19 km · Tsurusaki 21 km · Ōita 21 km · Bungo-Takada-shi 22 km · Yokkaichi 30 km · Yufu 33 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 Kitsuki (33.42°, 131.6184°, elevation 3 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).