Hashimoto weather in September

In September, Hashimoto sees average daytime highs of 27°C and overnight lows near 20°C, with 181 mm of rain across 13.8 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 29°C in the first days to 25°C by the end. The sky is clear or mostly clear about 29% 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 Hashimoto's 9th-clearest and 10th-windiest month. For the whole year in context, see Hashimoto's year-round climate.

Daytime high
27°
3rd warmest
Overnight low
20°
10th coldest
Rainfall
181 mm
13.8 wet days
Daylight
12 h 12 min
5:46 AM – 5:58 PM
Cloud cover
62%
9th clearest
Wind
7 km/h
10th windiest
Solar energy
4.23 kWh/m²
Travel score
5.6
out of 10

Hashimoto is city in Wakayama Prefecture, Japan.

Density
468/km²
people per km²
Founded
1955

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 29°C in the first days to 25°C by the end.

A typical September day in Hashimoto reaches about 27°C in the afternoon and slips back to 20°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 30°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°C warmer than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13022
23022
32922
42922
52921
62921
72921
82921
92921
102821
112820
122820
132820
142820
152720
162720
172719
182719
192719
202619
212619
222618
232618
242618
252518
262518
272517
282517
292517
302517

How September really feels in Hashimoto

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.

Hashimoto 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 / 8110.63.2101.2
Feb / 8710.42.910.71.6
Mar13° / 13212.70.811.73.3
Apr18° / 13111.5012.85.5
May22° / 14°15311.5013.86.4
Jun26° / 18°25115.5014.25.5
Jul29° / 23°21916014.14.5
Aug31° / 23°13613.7013.34.2
Sep27° / 20°18113.8012.25.6
Oct22° / 13°17811.4011.16.5
Nov16° / 1008.8010.25.1
Dec10° / 84101.59.72.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% 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 54%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24753
34753
44753
54753
64753
74654
84654
94753
104654
114654
124654
134753
144654
154555
164555
174555
184555
194555
204456
214456
224456
234555
244555
254654
264654
274555
284555
294555
304654

Chance of precipitation in September

Any precipitation

Hashimoto gets around 181 mm of rain over 13.8 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 46% and peaks near 48% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
146
247
347
447
548
648
748
848
948
1047
1147
1247
1346
1445
1545
1644
1744
1844
1944
2044
2144
2244
2344
2444
2545
2645
2745
2845
2945
3045

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 53% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
104153545
205163544
315173542
415183541
516183540
616193538
717203536
827213535
928223533
1029223532
1139233430
12410243428
13411253327
14512263225
15613263123
16714273121
17815273020
18917282918
191018282817
201119282715
211220282714
221321282612
231422282511
241523282410
25162429239
26172529227
27182629217
28192629206
29202729195
30222829184

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 8 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
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 5:35 AM to 5:56 AM, and sunset from 6:20 PM to 5:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:356:20
212.75:356:18
312.75:366:17
412.65:376:16
512.65:386:14
612.65:386:13
712.55:396:11
812.55:406:10
912.55:406:08
1012.45:416:07
1112.45:426:06
1212.45:436:04
1312.35:436:03
1412.35:446:01
1512.25:456:00
1612.25:465:58
1712.25:465:57
1812.15:475:55
1912.15:485:54
2012.15:485:52
2112.05:495:51
2212.05:505:49
2312.05:515:48
2411.95:515:46
2511.95:525:45
2611.85:535:44
2711.85:545:42
2811.85:545:41
2911.75:555:39
3011.75:565:38

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.23 kWh/m².

For context, solar energy here swings from a low near 2.48 kWh/m² to a high of 5.51 kWh/m² in May across the year — September's 4.23 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.5Bright
84.5Bright
94.5Bright
104.4Bright
114.4Bright
124.4Bright
134.3Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.2Bright
194.1Bright
204.1Bright
214.1Bright
224.0Bright
234.0Moderate
244.0Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.8Moderate
Planning a trip in September

Hazard calendar for Hashimoto

In seasonPeak

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

Hashimoto 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 Hashimoto?

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

5.6
Sightseeing
3rd-best month of the year
6.0
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Hashimoto for sightseeing.

What to pack for Hashimoto in September

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

In September, Hashimoto sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. About 14 days see rain.

light clothesrain gear

Sea temperature near Hashimoto 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 41 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 Jun 6 to Nov 11 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Hashimoto 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 Hashimoto peaks around June 23 at about 10 (very high) — 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 highModerateJun 23UV 10Dec 23UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Hashimoto 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 Hashimoto is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1423 µg/m³Oct 1713 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun19Moderate
Jul17Moderate
Aug18Moderate
Sep14Moderate
Oct13Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Hashimoto?

Hashimoto sits at 34.3°N, 135.6°E, 79 m above sea level, in Japan. The nearest listed city is Nakaiburi, 8.0 km away.

Topography around Hashimoto

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

Within 3 km, the terrain around Hashimoto has significant variations in elevation — a maximum elevation change of 468 m around an average of 186 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,094 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,879 m.

The land around Hashimoto is covered by trees (65%) and artificial surfaces (20%) within 3 km, trees (89%) within 16 km, and trees (62%) and water (22%) within 80 km.

3 km
468 m
16 km
1,094 m
80 km
1,879 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Nakaiburi 8.0 km · Gojō 8.0 km · Kawachi-Nagano 14 km · Shimobuchi 17 km · Gose 18 km · Kinokawa 20 km · Kanō 20 km · Katsuragi 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 Hashimoto (34.3167°, 135.6167°, elevation 79 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).