Wakasugi weather in September

In September, Wakasugi sees average daytime highs of 28°C and overnight lows near 21°C, with 179 mm of rain across 12.8 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 30°C in the first days to 26°C by the end. The sky is clear or mostly clear about 31% 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 Wakasugi's 3rd-clearest and 8th-windiest month. For the whole year in context, see Wakasugi's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
21°
10th coldest
Rainfall
179 mm
12.8 wet days
Daylight
12 h 12 min
6:06 AM – 6:18 PM
Cloud cover
61%
3rd clearest
Wind
8 km/h
8th windiest
Solar energy
4.16 kWh/m²
Travel score
5.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 30°C in the first days to 26°C by the end.

A typical September day in Wakasugi reaches about 28°C in the afternoon and slips back to 21°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13023
23023
33023
43022
53022
63022
72922
82922
92922
102922
112921
122921
132921
142921
152821
162821
172820
182820
192820
202820
212720
222719
232719
242719
252719
262719
272618
282618
292618
302618

How September really feels in Wakasugi

Once humidity and wind are folded in, September averages 6 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
6
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.

Wakasugi 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
Jan10° / 639.61.5102.1
Feb11° / 719.11.210.82.6
Mar14° / 11511.60.211.74.1
Apr19° / 10°13011.1012.85.9
May24° / 15°14710.6013.76.6
Jun27° / 20°30515.8014.25.3
Jul30° / 24°28717.50143.9
Aug32° / 24°17115.1013.23.7
Sep28° / 21°17912.8012.25.5
Oct23° / 15°1018011.27.2
Nov18° / 868.6010.35.8
Dec12° / 699.30.69.83.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% 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 52%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34555
44555
54555
64654
74753
84753
94753
104852
114852
124852
134852
144852
154852
164852
174852
184951
194951
204951
214852
224852
234951
244951
254951
264951
275050
285050
295149
305149

Chance of precipitation in September

Any precipitation

Wakasugi gets around 179 mm of rain over 12.8 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 50% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
150
249
349
448
548
647
747
847
946
1046
1145
1244
1343
1443
1542
1641
1740
1840
1939
2038
2138
2237
2337
2436
2536
2635
2735
2834
2934
3033

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 65% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1018245512
2018255511
3019275310
4011028529
5011129518
6021230497
7021331477
8031432456
9031533436
10141633415
11151733395
12161833374
13171933354
14282133334
15292232323
163102332303
173112431283
184122531262
194132630252
205152629232
215162728221
226172828201
237182927191
247192926171
258203026161
269213025141
2710223024130
2811233024120
2912243023110
3013253022100

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 8 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
288calm
298calm
308calm

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 5:56 AM to 6:16 AM, and sunset from 6:40 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:566:40
212.75:566:38
312.75:576:37
412.65:586:35
512.65:586:34
612.65:596:33
712.56:006:31
812.56:016:30
912.56:016:28
1012.46:026:27
1112.46:036:26
1212.36:036:24
1312.36:046:23
1412.36:056:21
1512.26:056:20
1612.26:066:18
1712.26:076:17
1812.16:076:15
1912.16:086:14
2012.16:096:13
2112.06:106:11
2212.06:106:10
2312.06:116:08
2411.96:126:07
2511.96:126:05
2611.86:136:04
2711.86:146:03
2811.86:156:01
2911.76:156:00
3011.76:165:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.16 kWh/m².

For context, solar energy here swings from a low near 2.18 kWh/m² to a high of 5.36 kWh/m² in May across the year — September's 4.16 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.0Bright
234.0Bright
244.0Bright
254.0Moderate
264.0Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Wakasugi

In seasonPeak

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

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

Wakasugi's rainy season runs May–September, 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 Wakasugi?

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

5.5
Sightseeing
5th-best month of the year
6.3
Beach & pool
1st-best month of the year

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

What to pack for Wakasugi in September

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

In September, Wakasugi sees daytime highs around 28°C and nights near 21°C. Pack light clothes. Worth having: rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Wakasugi in September

The nearest coast averages about 26°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 31 km away) is warmest in August at about 27°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 7 to Nov 19 — about 5.5 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Refreshing
Dec18Cool

UV index in Wakasugi 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 Wakasugi peaks around July 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highModerateJul 21UV 9Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun7Very high
Jul9Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Wakasugi 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 Wakasugi is worst in April — around 25 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1225 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar25Moderate
Apr25Moderate
May23Moderate
Jun18Moderate
Jul13Moderate
Aug15Moderate
Sep13Moderate
Oct12Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Wakasugi?

Wakasugi sits at 33.6°N, 130.5°E, 98 m above sea level, in Japan. The nearest listed city is Sasaguri, 2.0 km away.

Topography around Wakasugi

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

Within 3 km, the terrain around Wakasugi has large variations in elevation — a maximum elevation change of 661 m around an average of 162 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 922 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,509 m.

The land around Wakasugi is covered by trees (62%) and artificial surfaces (27%) within 3 km, trees (50%) and artificial surfaces (33%) within 16 km, and water (44%) and trees (39%) within 80 km.

3 km
661 m
16 km
922 m
80 km
1,509 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Sasaguri 2.0 km · Sue 3.0 km · Shime 4.0 km · Umi 5.0 km · Ōnojō 9.0 km · Fukuoka 10 km · Dazaifu 11 km · Kasuga 11 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 Wakasugi (33.6094°, 130.5263°, elevation 98 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).