Yame weather in September

In September, Yame sees average daytime highs of 28°C and overnight lows near 19°C, with 169 mm of rain across 12.5 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 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 Yame's 4th-clearest and 9th-windiest month. For the whole year in context, see Yame's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
169 mm
12.5 wet days
Daylight
12 h 12 min
6:06 AM – 6:18 PM
Cloud cover
61%
4th clearest
Wind
7 km/h
9th windiest
Solar energy
4.01 kWh/m²
Travel score
5.7
out of 10

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 26°C by the end.

A typical September day in Yame reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 31°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)
13021
22921
32921
42921
52921
62921
72921
82921
92920
102920
112820
122820
132820
142820
152819
162819
172819
182719
192719
202718
212718
222718
232718
242618
252617
262617
272617
282617
292617
302516

How September really feels in Yame

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.

Yame 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 / 638.72.110.11.8
Feb10° / 829.41.710.82.4
Mar14° / 12912.60.511.74.0
Apr19° / 14511.6012.85.8
May24° / 14°16411.4013.76.5
Jun26° / 18°36517.2014.25.2
Jul29° / 23°30618.20144.1
Aug31° / 23°16315.4013.24.0
Sep28° / 19°16912.5012.25.7
Oct23° / 13°1007.8011.27.2
Nov17° / 838.2010.35.7
Dec11° / 698.30.89.83.0

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 18% of September, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24654
34654
44654
54654
64753
74753
84852
94852
104852
114951
125050
135050
145050
155050
165050
175050
185050
195050
205050
215050
225050
235050
245149
255149
265149
275149
285248
295149
305149

Chance of precipitation in September

Any precipitation

Yame gets around 169 mm of rain over 12.5 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 41% 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
449
548
648
747
847
946
1046
1145
1244
1343
1442
1541
1640
1739
1838
1938
2037
2136
2236
2335
2435
2535
2634
2734
2834
2933
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 28% of days. Sticky, muggy-or-worse air turns up on roughly 55% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1011429542
2021530512
3021630492
4031731472
5031831461
6042031441
7142132421
8152132401
9162231381
10182331371
11292331350
122102431330
133122430310
143132430290
154142529270
165162529250
176172528240
187182527220
198192527200
209202626190
2110222625170
2211222624160
2313232623150
2414242622130
2515252622120
2616252621110
2718262620100
281927261990
292127261880
302327251770

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:55 AM to 6:15 AM, and sunset from 6:39 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:556:39
212.75:566:37
312.75:576:36
412.65:586:35
512.65:586:33
612.65:596:32
712.56:006:31
812.56:006:29
912.46:016:28
1012.46:026:26
1112.46:026:25
1212.36:036:23
1312.36:046:22
1412.36:046:21
1512.26:056:19
1612.26:066:18
1712.26:066:16
1812.16:076:15
1912.16:086:14
2012.16:086:12
2112.06:096:11
2212.06:106:09
2312.06:106:08
2411.96:116:06
2511.96:126:05
2611.96:136:04
2711.86:136:02
2811.86:146:01
2911.76:155:59
3011.76:155:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.01 kWh/m².

For context, solar energy here swings from a low near 2.24 kWh/m² to a high of 5.22 kWh/m² in May across the year — September's 4.01 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.0Bright
164.0Bright
174.0Bright
184.0Moderate
194.0Moderate
204.0Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.8Moderate
303.8Moderate
Planning a trip in September

Hazard calendar for Yame

In seasonPeak

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

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

Yame's rainy season runs June–July, 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 Yame?

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

5.7
Sightseeing
4th-best month of the year
6.3
Beach & pool
1st-best month of the year

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

What to pack for Yame in September

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

In September, Yame sees daytime highs around 28°C and nights near 19°C. Pack light clothes. Worth having: rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Yame 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 28 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from May 27 to Nov 12 — about 5.6 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Yame 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 Yame peaks around July 13 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 13UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Yame 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 Yame is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (July, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2325 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb20Moderate
Mar25Moderate
Apr25Moderate
May23Moderate
Jun19Moderate
Jul13Moderate
Aug15Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Yame?

Yame sits at 33.2°N, 130.6°E, 102 m above sea level, in Japan. The nearest listed city is Hirokawa, 9.0 km away.

Topography around Yame

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

Within 3 km, the terrain around Yame has significant variations in elevation — a maximum elevation change of 346 m around an average of 156 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 929 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,765 m.

The land around Yame is covered by trees (78%) within 3 km, trees (71%) within 16 km, and trees (56%) and water (22%) within 80 km.

3 km
346 m
16 km
929 m
80 km
1,765 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Hirokawa 9.0 km · Tanushimarumachi-toyoki 14 km · Chikugo 15 km · Kurume 16 km · Ukiha 17 km · Miyama 18 km · Setakamachi-takayanagi 19 km · Tachiarai 19 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 Yame (33.2279°, 130.6487°, elevation 102 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).