Masuda weather in September

In September, Masuda sees average daytime highs of 25°C and overnight lows near 22°C, with 180 mm of rain across 12 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 26°C in the first days to 23°C by the end. The sky is clear or mostly clear about 33% 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 Masuda's 6th-clearest and 8th-windiest month. For the whole year in context, see Masuda's year-round climate.

Daytime high
25°
3rd warmest
Overnight low
22°
10th coldest
Rainfall
180 mm
12 wet days
Daylight
12 h 12 min
6:01 AM – 6:13 PM
Cloud cover
59%
6th clearest
Wind
16 km/h
8th windiest
Solar energy
4.17 kWh/m²
Travel score
6.5
out of 10

Masuda is city in Shimane Prefecture, Japan.

Density
61/km²
people per km²
Founded
1952

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 26°C in the first days to 23°C by the end.

A typical September day in Masuda reaches about 25°C in the afternoon and slips back to 22°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 27°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12724
22724
32624
42624
52624
62624
72623
82623
92623
102623
112523
122523
132523
142522
152522
162522
172522
182422
192422
202422
212421
222421
232421
242421
252321
262321
272320
282320
292320
302320

Masuda 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 / 14418.23.89.91.2
Feb / 12115.23.110.71.5
Mar12° / 14513.90.811.72.7
Apr15° / 12°12411.6012.84.6
May19° / 16°13110.6013.86.1
Jun22° / 20°19612.8014.36.0
Jul26° / 24°22712.8014.16.1
Aug28° / 25°13411.2013.36.2
Sep25° / 22°18012012.26.5
Oct20° / 18°11110.1011.16.5
Nov16° / 13°10812010.24.7
Dec11° / 14517.31.79.72.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24753
34654
44753
54753
64753
74852
84852
94753
104852
114852
124852
134852
144753
154753
164852
174753
184753
194753
204753
214654
224654
234753
244852
254852
264852
274951
284951
294951
305149

Chance of precipitation in September

Any precipitation

Masuda gets around 180 mm of rain over 12 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 39% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
140
240
340
440
541
641
741
841
942
1042
1142
1241
1341
1441
1540
1640
1740
1839
1939
2039
2139
2238
2338
2438
2537
2637
2737
2836
2936
3036

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 63% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1017304914
2017314812
3018324711
4019334610
5021034459
6021134448
7031335427
8031435416
9141536405
10141636385
11151736374
12161936353
13272036333
14282135312
15292335302
163102434282
173112534261
184122633241
194132733221
205152832201
215162931181
226173030160
236183130150
247193229130
258203228120
269213327100
271022342690
281123342480
291224342370
301325342260

Wind in September

Winds average 16 km/h in September.

Across September, daily wind ranges from about 15 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze

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 5:49 AM to 6:11 AM, and sunset from 6:35 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:496:35
212.75:506:34
312.75:516:32
412.75:526:31
512.65:526:29
612.65:536:28
712.55:546:27
812.55:556:25
912.55:556:24
1012.45:566:22
1112.45:576:21
1212.45:586:19
1312.35:586:18
1412.35:596:16
1512.36:006:15
1612.26:016:13
1712.26:016:12
1812.16:026:10
1912.16:036:09
2012.16:036:07
2112.06:046:06
2212.06:056:04
2312.06:066:03
2411.96:066:01
2511.96:076:00
2611.86:085:59
2711.86:095:57
2811.86:105:56
2911.76:105:54
3011.76:115:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.17 kWh/m².

For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 5.67 kWh/m² in May across the year — September's 4.17 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.5Bright
34.5Bright
44.5Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.2Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.0Bright
244.0Bright
254.0Moderate
264.0Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Masuda

In seasonPeak

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

Masuda 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 Masuda?

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

6.5
Sightseeing
1st-best month of the year
5.7
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Masuda for sightseeing.

What to pack for Masuda in September

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

In September, Masuda sees daytime highs around 25°C and nights near 22°C. Worth packing: light clothes and rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Masuda 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 21 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 20 — 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
Apr15Cool
May18Cool
Jun21Refreshing
Jul24Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Refreshing
Dec18Cool

UV index in Masuda 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 Masuda peaks around July 14 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highModerateJul 14UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Masuda 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 Masuda is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateApr 1022 µg/m³Oct 1310 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar22Moderate
Apr22Moderate
May20Moderate
Jun17Moderate
Jul13Moderate
Aug12Moderate
Sep11Good
Oct10Good
Nov12Moderate
Dec12Good
Location & terrain

Where is Masuda?

Masuda sits at 34.7°N, 131.8°E, 14 m above sea level, in Japan. The nearest listed city is Hamada, 32 km away.

Topography around Masuda

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

Within 3 km, the terrain around Masuda has only modest variations in elevation — a maximum elevation change of 246 m around an average of 72 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 872 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,326 m.

The land around Masuda is covered by trees (72%) within 3 km, trees (69%) and water (27%) within 16 km, and trees (55%) and water (40%) within 80 km.

3 km
246 m
16 km
872 m
80 km
1,326 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Hamada 32 km · Hagi 50 km · Gōtsuchō 51 km · Hatsukaichi 57 km · Ōno-hara 57 km · Miyajima 60 km · Ōtake 61 km · Gion 62 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 Masuda (34.6667°, 131.85°, elevation 14 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).