Amakusa weather in October

In October, Amakusa sees average daytime highs of 25°C and overnight lows near 17°C, with 104 mm of rain across 8.1 wet days and about 11.2 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 22°C by the end. The sky is clear or mostly clear about 46% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 42 min by month's end. Set against the rest of the year, October is Amakusa's 1st-clearest and 6th-windiest month. For the whole year in context, see Amakusa's year-round climate.

Daytime high
25°
5th warmest
Overnight low
17°
8th coldest
Rainfall
104 mm
8.1 wet days
Daylight
11 h 12 min
6:29 AM – 5:40 PM
Cloud cover
47%
1st clearest
Wind
10 km/h
6th windiest
Solar energy
3.8 kWh/m²
Travel score
7.2
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 27°C in the first days to 22°C by the end.

A typical October day in Amakusa reaches about 25°C in the afternoon and slips back to 17°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 28°C. Set against its neighbours, October runs about 5°C cooler than September and about 6°C warmer than November.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12720
22720
32720
42719
52719
62619
72619
82619
92618
102618
112618
122618
132518
142517
152517
162517
172517
182517
192417
202416
212416
222416
232416
242316
252315
262315
272315
282315
292215
302215
312214

How October really feels in Amakusa

Once humidity and wind are folded in, October 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

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Amakusa weather by month

How October compares with the rest of the year at a glance. October is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan11° / 698.410.13.0
Feb13° / 879.110.83.4
Mar16° / 13111.511.84.8
Apr21° / 13°1521112.86.1
May25° / 17°18111.113.66.5
Jun27° / 21°44517.414.15.0
Jul31° / 25°36619.113.93.6
Aug32° / 25°18315.513.23.4
Sep29° / 22°19712.812.25.0
Oct25° / 17°1048.111.27.2
Nov19° / 12°1018.410.36.3
Dec14° / 817.49.94.1

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25446
35446
45545
55644
65743
75941
86040
96139
106238
116238
126238
136337
146436
156436
166436
176535
186535
196436
206436
216337
226337
236238
246238
256139
266139
276139
286139
296139
306139
316139

Chance of precipitation in October

Any precipitation

Amakusa gets around 104 mm of rain over 8.1 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 35% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
334
433
532
631
730
829
928
1027
1127
1226
1325
1425
1524
1624
1724
1824
1924
2024
2124
2224
2325
2425
2525
2625
2725
2825
2925
3025
3126

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 39% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
112242624122
213252623112
314262622112
415272521101
51728252091
61929241891
72129241781
82330231671
92530221571
102830211460
113030211350
123330201350
133530191240
143729181140
153929181130
164128171030
174328171020
18452716920
19472716920
20492615810
21512615710
22522515710
23542514610
24552414610
25562413610
26572413510
27602312500
28602312500
29612311500
30622310500
31632310400

Wind in October

Winds average 10 km/h in October.

Across October, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over October. Sunrise moves from 6:18 AM to 6:41 AM, and sunset from 5:59 PM to 5:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:185:59
211.76:185:57
311.66:195:56
411.66:205:55
511.56:215:53
611.56:215:52
711.56:225:51
811.46:235:50
911.46:235:48
1011.46:245:47
1111.36:255:46
1211.36:265:45
1311.36:265:43
1411.36:275:42
1511.26:285:41
1611.26:295:40
1711.26:295:39
1811.16:305:38
1911.16:315:36
2011.16:325:35
2111.06:335:34
2211.06:335:33
2311.06:345:32
2410.96:355:31
2510.96:365:30
2610.96:375:29
2710.86:385:28
2810.86:395:27
2910.86:395:26
3010.86:405:25
3110.76:415:24

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.8 kWh/m².

For context, solar energy here swings from a low near 2.23 kWh/m² to a high of 5.26 kWh/m² in May across the year — October's 3.8 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.0Bright
24.0Bright
34.0Bright
44.0Bright
54.0Bright
64.0Moderate
74.0Moderate
84.0Moderate
94.0Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.9Moderate
153.9Moderate
163.8Moderate
173.8Moderate
183.8Moderate
193.7Moderate
203.7Moderate
213.7Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.4Moderate
293.4Moderate
303.3Moderate
313.3Moderate
Planning a trip in October

Hazard calendar for Amakusa

In seasonPeak

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

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

Amakusa'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 October a good time to visit Amakusa?

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

7.2
Sightseeing
1st-best month of the year
6.3
Beach & pool
2nd-best month of the year

October is one of the better times to visit Amakusa for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Amakusa in October

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

In October, Amakusa sees daytime highs around 25°C and nights near 17°C. Worth packing: light clothes and rain gear. About 8 days see rain.

light clothesrain gear

Sea temperature near Amakusa in October

The nearest coast averages about 24°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 20 km away) is warmest in August at about 27°C and coldest in February near 15°C.

It's comfortable for a long swim from May 24 to Nov 24 — about 6.1 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Bracing
Mar15Cool
Apr17Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct24Refreshing
Nov21Refreshing
Dec18Cool

UV index in Amakusa in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Amakusa peaks around July 13 at about 10 (extreme) — 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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 13UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul11Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Amakusa in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Amakusa is worst in March — around 24 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2424 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar24Moderate
Apr24Moderate
May22Moderate
Jun18Moderate
Jul13Moderate
Aug14Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Amakusa?

Amakusa sits at 32.5°N, 130.2°E, 6 m above sea level, in Japan. The nearest listed city is Hondomachi-hondo, 2.0 km away.

Topography around Amakusa

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

Within 3 km, the terrain around Amakusa has significant variations in elevation — a maximum elevation change of 310 m around an average of 40 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 664 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,724 m.

The land around Amakusa is covered by trees (52%), artificial surfaces (22%) and water (20%) within 3 km, trees (54%) and water (40%) within 16 km, and water (48%) and trees (42%) within 80 km.

3 km
310 m
16 km
664 m
80 km
1,724 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Hondomachi-hondo 2.0 km · Minamishimabara 25 km · Ōyanomachi-noboritate 27 km · Ushibukamachi 33 km · Minamata 33 km · Sashiki 34 km · Unzen 35 km · Honmachi 38 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 Amakusa (32.4586°, 130.1931°, elevation 6 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).