Yae weather in September

In September, Yae sees average daytime highs of 26°C and overnight lows near 17°C, with 211 mm of rain across 13.9 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 28°C in the first days to 24°C by the end. The sky is clear or mostly clear about 23% 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 Yae's 8th-clearest and 10th-windiest month. For the whole year in context, see Yae's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
17°
10th coldest
Rainfall
211 mm
13.9 wet days
Daylight
12 h 12 min
5:58 AM – 6:11 PM
Cloud cover
66%
8th clearest
Wind
8 km/h
10th windiest
Solar energy
4.06 kWh/m²
Travel score
5.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 28°C in the first days to 24°C by the end.

A typical September day in Yae reaches about 26°C in the afternoon and slips back to 17°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 29°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)
12820
22820
32820
42820
52820
62819
72719
82719
92719
102719
112718
122718
132618
142618
152618
162617
172617
182617
192517
202517
212516
222516
232516
242416
252416
262415
272415
282415
292415
302315

How September really feels in Yae

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.

Yae 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 / -1°8013.99.69.90.5
Feb / -1°8112.57.110.71.0
Mar12° / 11913.53.411.72.8
Apr18° / 12411.10.312.85.4
May22° / 12°14411.4013.86.4
Jun25° / 17°21915.3014.35.7
Jul29° / 21°26917.4014.14.6
Aug30° / 22°17215.5013.34.4
Sep26° / 17°21113.9012.25.9
Oct21° / 11°1129.4011.16.5
Nov15° / 829.70.310.24.4
Dec / 8813.45.69.71.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% 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 59%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13862
23862
33862
43862
53961
63961
73961
84060
94060
104060
114060
124159
134159
144159
154159
164060
174159
184258
194159
204159
214258
224159
234159
244258
254258
264258
274258
284357
294357
304357

Chance of precipitation in September

Any precipitation

Yae gets around 211 mm of rain over 13.9 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 46% and peaks near 52% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
152
252
352
452
551
651
751
851
950
1050
1149
1248
1347
1446
1546
1645
1744
1844
1943
2043
2142
2242
2342
2441
2541
2640
2740
2839
2939
3039

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 41% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
106234031
206244029
307253928
418263927
519273825
6110283823
7211283822
8212293720
9313293719
10414293617
11515293516
12616293415
13718293313
14819293212
151020283111
161121283010
17132228289
18142327278
19162427257
20182527246
21192627226
22212726206
23222826195
24242926175
25253025164
26273025144
27283124133
28303124123
29323223113
30333222112

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.

0246810151015202530
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 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 5:47 AM to 6:08 AM, and sunset from 6:32 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:476:32
212.75:476:31
312.75:486:30
412.75:496:28
512.65:506:27
612.65:506:25
712.55:516:24
812.55:526:22
912.55:536:21
1012.45:536:19
1112.45:546:18
1212.45:556:17
1312.35:566:15
1412.35:566:14
1512.35:576:12
1612.25:586:11
1712.25:596:09
1812.15:596:08
1912.16:006:06
2012.16:016:05
2112.06:016:03
2212.06:026:02
2312.06:036:00
2411.96:045:59
2511.96:055:57
2611.86:055:56
2711.86:065:54
2811.86:075:53
2911.76:085:51
3011.76:085:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.06 kWh/m².

For context, solar energy here swings from a low near 2.09 kWh/m² to a high of 5.56 kWh/m² in May across the year — September's 4.06 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.4Bright
34.4Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.0Bright
194.0Bright
204.0Bright
214.0Moderate
224.0Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.8Moderate
Planning a trip in September

Hazard calendar for Yae

In seasonPeak

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

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

Yae's rainy season runs April–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 Yae?

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

5.9
Sightseeing
3rd-best month of the year
5.7
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Yae for sightseeing.

What to pack for Yae in September

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

In September, Yae sees daytime highs around 26°C and nights near 17°C. Pack rain gear. Worth having: light clothes. About 14 days see rain.

rain gearlight clothes

Sea temperature near Yae 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 43 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 9 to Nov 18 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar14Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul24Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Yae 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 Yae peaks around July 16 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highExtremeVery highModerateJul 16UV 10Dec 23UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Yae 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 Yae is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1322 µg/m³Oct 1711 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar21Moderate
Apr22Moderate
May20Moderate
Jun18Moderate
Jul14Moderate
Aug14Moderate
Sep12Good
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Yae?

Yae sits at 34.7°N, 132.5°E, 292 m above sea level, in Japan. The nearest listed city is Aki-takata, 14 km away.

Topography around Yae

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

Within 3 km, the terrain around Yae has significant variations in elevation — a maximum elevation change of 356 m around an average of 329 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 951 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,327 m.

The land around Yae is covered by trees (64%) and cropland (20%) within 3 km, trees (88%) within 16 km, and trees (67%) and water (27%) within 80 km.

3 km
356 m
16 km
951 m
80 km
1,327 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Aki-takata 14 km · Gion 28 km · Miyoshi 32 km · Hiroshima 32 km · Fuchū 33 km · Kaitaichi 35 km · Higashihiroshima 36 km · Kumano 39 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 Yae (34.6833°, 132.5333°, elevation 292 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).