Sasebo weather in October

In October, Sasebo sees average daytime highs of 23°C and overnight lows near 17°C, with 102 mm of rain across 6.9 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 25°C in the first days to 21°C by the end. The sky is clear or mostly clear about 45% 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 Sasebo's 1st-clearest and 5th-windiest month. For the whole year in context, see Sasebo's year-round climate.

Daytime high
23°
5th warmest
Overnight low
17°
8th coldest
Rainfall
102 mm
6.9 wet days
Daylight
11 h 12 min
6:31 AM – 5:41 PM
Cloud cover
48%
1st clearest
Wind
12 km/h
5th windiest
Solar energy
3.74 kWh/m²
Travel score
7.4
out of 10

Sasebo is city in Nagasaki Prefecture, Japan.

Density
571/km²
people per km²
Founded
1902

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 21°C by the end.

A typical October day in Sasebo reaches about 23°C in the afternoon and slips back to 17°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 26°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°151015202531
Avg high (°C)Avg low (°C)
12519
22519
32519
42519
52519
62518
72518
82518
92418
102418
112418
122417
132417
142417
152317
162317
172316
182316
192316
202316
212216
222216
232215
242215
252215
262115
272115
282114
292114
302114
312114

How October really feels in Sasebo

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.

Sasebo 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 daysSnow daysDaylight (hours)Travel score
Jan10° / 618.40.710.12.3
Feb11° / 728.40.510.82.8
Mar15° / 11810.50.111.74.3
Apr19° / 12°13810.4012.86.0
May23° / 16°14910.1013.76.7
Jun26° / 20°30815.7014.15.5
Jul29° / 24°28516.30144.4
Aug31° / 25°17814.7013.24.0
Sep28° / 22°18612.3012.25.8
Oct23° / 17°1026.9011.27.4
Nov18° / 11°908.1010.36.0
Dec12° / 697.50.19.83.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% 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%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25545
35545
45743
55842
65941
76040
86139
96238
106337
116436
126337
136337
146436
156436
166436
176436
186337
196337
206337
216238
226238
236238
246139
256040
266040
276040
286040
296040
306040
316040

Chance of precipitation in October

Any precipitation

Sasebo gets around 102 mm of rain over 6.9 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 24% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
229
328
427
526
625
724
824
923
1022
1122
1222
1322
1422
1522
1622
1722
1822
1923
2023
2123
2223
2323
2423
2523
2623
2723
2823
2923
3023
3123

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 44% of days. Sticky, muggy-or-worse air turns up on roughly 12% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
114252821111
216262820101
31726271991
41927271891
52128261681
62329261571
72529251470
82729241360
93030231250
103330221150
113530211040
123729201030
13402919930
14422919820
15442918820
16462817720
17482817710
18502716610
19522715510
20532615510
21542614510
22582513400
23592413400
24612412300
25622312300
26642211300
27642211300
28662110300
29682010200
30691910200
3170199200

Wind in October

Winds average 12 km/h in October.

Across October, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

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 6:20 AM to 6:44 AM, and sunset from 6:00 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:206:00
211.66:215:59
311.66:215:58
411.66:225:56
511.56:235:55
611.56:235:54
711.56:245:52
811.46:255:51
911.46:265:50
1011.46:275:48
1111.36:275:47
1211.36:285:46
1311.36:295:45
1411.26:305:43
1511.26:305:42
1611.26:315:41
1711.16:325:40
1811.16:335:39
1911.16:345:38
2011.06:355:36
2111.06:355:35
2211.06:365:34
2310.96:375:33
2410.96:385:32
2510.96:395:31
2610.86:405:30
2710.86:405:29
2810.86:415:28
2910.76:425:27
3010.76:435:26
3110.76:445:25

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.74 kWh/m².

For context, solar energy here swings from a low near 2.13 kWh/m² to a high of 5.4 kWh/m² in May across the year — October's 3.74 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
14.0Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.9Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.8Moderate
173.8Moderate
183.7Moderate
193.7Moderate
203.7Moderate
213.6Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.3Moderate
303.3Moderate
313.2Moderate
Planning a trip in October

Hazard calendar for Sasebo

In seasonPeak

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

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

Sasebo's rainy season runs May–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 October a good time to visit Sasebo?

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

7.4
Sightseeing
1st-best month of the year
5.7
Beach & pool
4th-best month of the year

October is one of the better times to visit Sasebo for general sightseeing.

What to pack for Sasebo in October

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

In October, Sasebo sees daytime highs around 23°C and nights near 17°C. Worth packing: light clothes. About 7 days see rain.

light clothes

Sea temperature near Sasebo 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 offshore is warmest in August at about 27°C and coldest in February near 15°C.

It's comfortable for a long swim from Jun 1 to Nov 26 — about 5.9 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Bracing
Mar15Cool
Apr16Cool
May19Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct24Refreshing
Nov21Refreshing
Dec18Cool

UV index in Sasebo in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sasebo peaks around July 18 at about 10 (very high) — 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 — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 18UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Sasebo 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 Sasebo is worst in April — around 24 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateGoodModerateApr 1324 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar23Moderate
Apr24Moderate
May21Moderate
Jun17Moderate
Jul12Good
Aug12Moderate
Sep12Good
Oct11Good
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Sasebo?

Sasebo sits at 33.2°N, 129.7°E, 8 m above sea level, in Japan. The nearest listed city is Arita, 16 km away.

Topography around Sasebo

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

Within 3 km, the terrain around Sasebo has significant variations in elevation — a maximum elevation change of 561 m around an average of 104 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 779 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,455 m.

The land around Sasebo is covered by trees (46%) and artificial surfaces (38%) within 3 km, trees (58%) and water (28%) within 16 km, and water (66%) and trees (24%) within 80 km.

3 km
561 m
16 km
779 m
80 km
1,455 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Arita 16 km · Imarichō-kō 18 km · Matsuura 19 km · Saikai 21 km · Ureshinomachi-shimojuku 27 km · Hirado 27 km · Takeo 28 km · Kashima 35 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 Sasebo (33.1683°, 129.725°, elevation 8 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).