Fukui-shi weather in September

In September, Fukui-shi sees average daytime highs of 25°C and overnight lows near 19°C, with 223 mm of rain across 14.2 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 27°C in the first days to 23°C by the end. The sky is clear or mostly clear about 28% 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 Fukui-shi's 6th-clearest and 9th-windiest month. For the whole year in context, see Fukui-shi's year-round climate.

Daytime high
25°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
223 mm
14.2 wet days
Daylight
12 h 12 min
5:43 AM – 5:56 PM
Cloud cover
64%
6th clearest
Wind
10 km/h
9th windiest
Solar energy
4.12 kWh/m²
Travel score
6.0
out of 10

Fukui-shi is capital of Fukui Prefecture, Japan.

Density
489/km²
people per km²
Founded
1889

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 27°C in the first days to 23°C by the end.

A typical September day in Fukui-shi reaches about 25°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 22°C and 28°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12722
22722
32721
42721
52721
62621
72621
82621
92621
102620
112620
122520
132520
142520
152519
162519
172519
182419
192419
202419
212418
222418
232318
242318
252318
262317
272317
282317
292217
302217

How September really feels in Fukui-shi

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.

Fukui-shi 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 / 21123.315.99.80.1
Feb / 15118.312.210.60.2
Mar / 16916.95.811.71.7
Apr15° / 15013.50.912.94.1
May19° / 13°16613.1013.95.8
Jun23° / 18°20013.7014.45.9
Jul27° / 22°27116.7014.25.3
Aug28° / 23°16613.2013.45.4
Sep25° / 19°22314.2012.26.0
Oct19° / 14°17413.6011.15.7
Nov14° / 17216.20.610.13.5
Dec / 222229.79.61.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% 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 58%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34357
44357
54357
64357
74456
84456
94456
104357
114456
124456
134456
144357
154357
164357
174159
184159
194159
204159
214159
224159
234159
244258
254159
264159
274258
284258
294258
304357

Chance of precipitation in September

Any precipitation

Fukui-shi gets around 223 mm of rain over 14.2 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 47% and peaks near 49% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
146
247
348
448
548
649
749
849
949
1049
1149
1249
1349
1449
1549
1648
1748
1848
1947
2047
2147
2246
2346
2446
2545
2645
2745
2844
2944
3044

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 34% of days. Sticky, muggy-or-worse air turns up on roughly 48% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1021745351
2031845341
3031945320
4032145300
5042245280
6042345270
7052445250
8162645230
9162744210
10172844200
11282943180
12293042160
133103141150
143123240130
154133338120
165143436110
17616353590
18717353380
19819353170
20920352960
211122352760
221223352550
231325352340
241526342240
251628342030
261729331830
271930331620
282032321520
292133311320
302333301210

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 5:31 AM to 5:54 AM, and sunset from 6:19 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:316:19
212.85:326:17
312.75:326:16
412.75:336:14
512.75:346:13
612.65:356:11
712.65:366:10
812.55:366:08
912.55:376:07
1012.55:386:05
1112.45:396:04
1212.45:396:02
1312.35:406:01
1412.35:415:59
1512.35:425:58
1612.25:435:56
1712.25:435:55
1812.15:445:53
1912.15:455:52
2012.15:465:50
2112.05:475:48
2212.05:485:47
2312.05:485:45
2411.95:495:44
2511.95:505:42
2611.85:515:41
2711.85:525:39
2811.85:525:38
2911.75:535:36
3011.75:545:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.12 kWh/m².

For context, solar energy here swings from a low near 2.09 kWh/m² to a high of 5.61 kWh/m² in May across the year — September's 4.12 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.5Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.3Bright
114.2Bright
124.2Bright
134.2Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.0Bright
194.0Bright
204.0Moderate
214.0Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.8Moderate
303.7Moderate
Planning a trip in September

Hazard calendar for Fukui-shi

In seasonPeak

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

Fukui-shi 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 Fukui-shi?

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

6.0
Sightseeing
1st-best month of the year
5.3
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Fukui-shi for sightseeing.

What to pack for Fukui-shi in September

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

In September, Fukui-shi sees daytime highs around 25°C and nights near 19°C. Pack rain gear. Worth having: light clothes. About 14 days see rain.

rain gearlight clothes

Sea temperature near Fukui-shi 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 offshore is warmest in August at about 27°C and coldest in March near 11°C.

It's comfortable for a long swim from Jun 16 to Nov 5 — about 4.7 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb12Bracing
Mar11Bracing
Apr13Bracing
May16Cool
Jun20Refreshing
Jul24Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Fukui-shi 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 Fukui-shi peaks around July 17 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 17UV 10Jan 10UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun10Very high
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Fukui-shi 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 Fukui-shi is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1620 µg/m³Dec 1310 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar19Moderate
Apr20Moderate
May19Moderate
Jun17Moderate
Jul13Moderate
Aug12Good
Sep11Good
Oct10Good
Nov11Good
Dec10Good
Location & terrain

Where is Fukui-shi?

Fukui-shi sits at 36.1°N, 136.2°E, 15 m above sea level, in Japan. The nearest listed city is Sakai, 10 km away.

Topography around Fukui-shi

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

Within 3 km, the terrain around Fukui-shi has only modest variations in elevation — a maximum elevation change of 131 m around an average of 12 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 899 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,671 m.

The land around Fukui-shi is covered by artificial surfaces (82%) within 3 km, trees (53%) and cropland (25%) within 16 km, and trees (55%) and water (36%) within 80 km.

3 km
131 m
16 km
899 m
80 km
2,671 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Sakai 10 km · Maruoka 11 km · Iijima 13 km · Sabae 14 km · Awara 18 km · Mikuni 18 km · Takefu 19 km · Echizen 20 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 Fukui-shi (36.0644°, 136.2226°, elevation 15 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).