Sinan weather in October

In October, Sinan sees average daytime highs of 19°C and overnight lows near 17°C, with 61 mm of rain across 4.6 wet days and about 11.1 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 16°C by the end. The sky is clear or mostly clear about 51% 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 36 min by month's end. Set against the rest of the year, October is Sinan's 1st-clearest and 6th-windiest month. For the whole year in context, see Sinan's year-round climate.

Daytime high
19°
5th warmest
Overnight low
17°
8th coldest
Rainfall
61 mm
4.6 wet days
Daylight
11 h 06 min
6:47 AM – 5:54 PM
Cloud cover
43%
1st clearest
Wind
21 km/h
6th windiest
Solar energy
3.88 kWh/m²
Travel score
7.0
out of 10

Sinan is human settlement in South Korea.

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 21°C in the first days to 16°C by the end.

A typical October day in Sinan reaches about 19°C in the afternoon and slips back to 17°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 20°C. Set against its neighbours, October runs about 4°C cooler than September and about 5°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12119
22119
32119
42019
52019
62018
72018
82018
92018
102018
111918
121917
131917
141917
151917
161917
171817
181816
191816
201816
211816
221816
231715
241715
251715
261715
271715
281715
291714
301614
311614

How October really feels in Sinan

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.

Sinan 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
Jan / 407.52.89.90.4
Feb / 456.61.810.70.4
Mar / 717.30.411.71.5
Apr11° / 10°917.6012.83.1
May15° / 14°1037.8013.85.1
Jun19° / 18°1718.7014.36.1
Jul23° / 22°21511.6014.16.4
Aug25° / 24°20411.3013.36.7
Sep23° / 21°1617.7012.27.2
Oct19° / 17°614.6011.17.0
Nov14° / 11°586.9010.24.2
Dec / 448.11.79.71.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
26040
36139
46139
56238
66337
76436
86436
96634
106634
116634
126733
136733
146733
156733
166733
176733
186733
196733
206733
216634
226634
236634
246535
256535
266535
276535
286535
296535
306535
316535

Chance of precipitation in October

Any precipitation

Sinan gets around 61 mm of rain over 4.6 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 15% and peaks near 20% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
120
219
319
418
518
617
716
816
915
1014
1114
1213
1313
1412
1512
1612
1712
1812
1912
2012
2113
2213
2313
2414
2514
2615
2715
2816
2916
3017
3118

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 53% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1232435181
2252434161
3272533150
4292531140
5322630120
6342629110
7372627100
840272590
942272370
1045272260
1147272060
1249281950
1350281840
1452281640
1554281530
1654291430
1755291330
1857291220
1959281120
2060281020
216327910
226427810
236526810
246725710
256824710
266924610
277023610
287421500
297520500
307719400
317818400

Wind in October

Winds average 21 km/h in October.

Across October, daily wind ranges from about 20 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120light breeze
220breezy
320breezy
420breezy
520breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3023breezy
3123breezy

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over October. Sunrise moves from 6:35 AM to 7:01 AM, and sunset from 6:14 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:356:14
211.66:366:13
311.66:376:11
411.56:376:10
511.56:386:09
611.56:396:07
711.46:406:06
811.46:416:04
911.46:416:03
1011.36:426:02
1111.36:436:00
1211.36:445:59
1311.26:455:58
1411.26:465:56
1511.16:465:55
1611.16:475:54
1711.16:485:53
1811.06:495:51
1911.06:505:50
2011.06:515:49
2110.96:525:48
2210.96:535:47
2310.96:545:46
2410.86:555:44
2510.86:555:43
2610.86:565:42
2710.76:575:41
2810.76:585:40
2910.76:595:39
3010.67:005:38
3110.67:015:37

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.88 kWh/m².

For context, solar energy here swings from a low near 2.11 kWh/m² to a high of 5.9 kWh/m² in May across the year — October's 3.88 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.0Bright
124.0Bright
134.0Bright
144.0Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.8Moderate
213.7Moderate
223.7Moderate
233.6Moderate
243.6Moderate
253.6Moderate
263.5Moderate
273.5Moderate
283.4Moderate
293.4Moderate
303.3Moderate
313.3Moderate
Planning a trip in October

Hazard calendar for Sinan

In seasonPeak

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

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

Sinan'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 Sinan?

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

7.0
Sightseeing
2nd-best month of the year
2.7
Beach & pool
5th-best month of the year

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

What to pack for Sinan in October

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

In October, Sinan sees daytime highs around 19°C and nights near 17°C. Worth packing: a windbreaker. About 5 days see rain.

a windbreaker

Sea temperature near Sinan in October

The nearest coast averages about 19°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 22 km away) is warmest in August at about 25°C and coldest in February near 7°C.

It's comfortable for a long swim from Jun 30 to Oct 6 — about 3.3 months when the water holds above 20°C.

10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan9Bracing
Feb7Bracing
Mar8Bracing
Apr10Bracing
May14Bracing
Jun18Cool
Jul22Refreshing
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Sinan 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 Sinan peaks around June 22 at about 8 (very high) — 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 highHighModerateJun 22UV 8Dec 22UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar6High
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug8Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Sinan 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 Sinan is worst in March — around 33 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (August, 13 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1732 µg/m³Aug 1113 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb29Moderate
Mar33Moderate
Apr29Moderate
May23Moderate
Jun17Moderate
Jul14Moderate
Aug13Moderate
Sep17Moderate
Oct18Moderate
Nov21Moderate
Dec20Moderate
Location & terrain

Where is Sinan?

Sinan sits at 34.8°N, 126.1°E, 3 m above sea level, in South Korea. The nearest listed city is Mokpo, 26 km away.

MuanHaenamYeongamNajuYeonggwangMasanJangheung

Topography around Sinan

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

Within 3 km, the terrain around Sinan has significant variations in elevation — a maximum elevation change of 337 m around an average of 38 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 346 m; within 80 km, large variations in elevation — a maximum elevation change of 768 m.

The land around Sinan is covered by trees (41%) and water (32%) within 3 km, water (75%) within 16 km, and water (66%) within 80 km.

3 km
337 m
16 km
346 m
80 km
768 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Mokpo 26 km · Muan 38 km · Haenam 53 km · Yeongam 54 km · Naju 60 km · Yeonggwang 62 km · Masan 74 km · Jangheung 75 km

South Korea travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
220 V · 60 Hz
Prices
≈ 57% of US
price level, 2025
GDP per capita
$36,227
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.5
per 100k, 2023
Road deaths
8.6
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 522
Religion
none 60%Protestant 17%Buddhist 16%Catholic 6%

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 Sinan (34.8262°, 126.1086°, elevation 3 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).