Higashihiroshima weather in September

In September, Higashihiroshima sees average daytime highs of 28°C and overnight lows near 19°C, with 169 mm of rain across 11.6 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 25°C by the end. The sky is clear or mostly clear about 27% 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 Higashihiroshima's 7th-clearest and 8th-windiest month. For the whole year in context, see Higashihiroshima's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
169 mm
11.6 wet days
Daylight
12 h 12 min
5:57 AM – 6:10 PM
Cloud cover
63%
7th clearest
Wind
8 km/h
8th windiest
Solar energy
4.2 kWh/m²
Travel score
5.8
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 25°C by the end.

A typical September day in Higashihiroshima reaches about 28°C in the afternoon and slips back to 19°C overnight — a 8°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 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)
13022
23022
33022
42921
52921
62921
72921
82921
92921
102921
112820
122820
132820
142820
152820
162819
172719
182719
192719
202718
212718
222618
232618
242618
252617
262617
272517
282517
292517
302516

How September really feels in Higashihiroshima

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.

Higashihiroshima 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 / 456.11.4101.7
Feb10° / 577.81.710.72.1
Mar13° / 10110.50.611.73.7
Apr19° / 1179.8012.85.9
May23° / 14°1349.8013.86.8
Jun26° / 18°20113.3014.35.8
Jul29° / 23°22514.5014.14.6
Aug31° / 23°13212.5013.34.2
Sep28° / 19°16911.6012.25.8
Oct22° / 13°1037.9011.17.1
Nov16° / 636.6010.25.5
Dec11° / 536.40.59.72.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14357
24456
34357
44357
54357
64357
74357
84357
94456
104555
114555
124555
134555
144555
154555
164555
174456
184555
194456
204456
214456
224555
234555
244555
254555
264555
274654
284654
294753
304753

Chance of precipitation in September

Any precipitation

Higashihiroshima gets around 169 mm of rain over 11.6 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 38% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
143
243
342
442
542
642
741
841
941
1041
1140
1240
1339
1439
1538
1637
1737
1837
1937
2036
2136
2236
2335
2435
2535
2634
2734
2833
2933
3033

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 27% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
117183738
217193637
318203635
418213634
529223532
6210223531
7310233529
8311243428
9412243426
10513253325
11613253224
12714263122
13815263121
14916263019
151117262918
161218262816
171319262815
181520252713
191621252612
201822252511
21192325249
22212425228
23222525217
24242624207
25252624196
26262724175
27282824164
28292923154
29302923143
30323022133

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 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
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 5:46 AM to 6:07 AM, and sunset from 6:31 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:466:31
212.75:476:30
312.75:486:29
412.65:486:27
512.65:496:26
612.65:506:24
712.55:506:23
812.55:516:21
912.55:526:20
1012.45:536:19
1112.45:536:17
1212.45:546:16
1312.35:556:14
1412.35:566:13
1512.25:566:11
1612.25:576:10
1712.25:586:08
1812.15:586:07
1912.15:596:05
2012.16:006:04
2112.06:016:02
2212.06:016:01
2312.06:025:59
2411.96:035:58
2511.96:045:56
2611.86:045:55
2711.86:055:54
2811.86:065:52
2911.76:075:51
3011.76:075:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.2 kWh/m².

For context, solar energy here swings from a low near 2.22 kWh/m² to a high of 5.59 kWh/m² in May across the year — September's 4.2 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.1Bright
214.1Bright
224.1Bright
234.0Bright
244.0Bright
254.0Bright
264.0Moderate
274.0Moderate
283.9Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Higashihiroshima

In seasonPeak

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

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

Higashihiroshima's rainy season runs April–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 Higashihiroshima?

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

5.8
Sightseeing
4th-best month of the year
6.3
Beach & pool
1st-best month of the year

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

What to pack for Higashihiroshima in September

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

In September, Higashihiroshima sees daytime highs around 28°C and nights near 19°C. Pack light clothes. Worth having: rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Higashihiroshima 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 33 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 13 to Nov 17 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun20Refreshing
Jul24Warm
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Higashihiroshima 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 Higashihiroshima peaks around July 15 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 highVery highModerateJul 15UV 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 Higashihiroshima 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 Higashihiroshima 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 Higashihiroshima?

Higashihiroshima sits at 34.4°N, 132.7°E, 217 m above sea level, in Japan. The nearest listed city is Kumano, 17 km away.

Topography around Higashihiroshima

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

Within 3 km, the terrain around Higashihiroshima has significant variations in elevation — a maximum elevation change of 268 m around an average of 229 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 794 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,900 m.

The land around Higashihiroshima is covered by artificial surfaces (42%) and trees (29%) within 3 km, trees (77%) within 16 km, and trees (66%) and water (26%) within 80 km.

3 km
268 m
16 km
794 m
80 km
1,900 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Kumano 17 km · Takehara 18 km · Kaitaichi 19 km · Fuchū 21 km · Gion 25 km · Kure 25 km · Hiroshima 26 km · Aki-takata 30 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 Higashihiroshima (34.4086°, 132.7368°, elevation 217 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).