Ganghwa-gun weather in October

In October, Ganghwa-gun sees average daytime highs of 19°C and overnight lows near 11°C, with 52 mm of rain across 5.1 wet days and about 11 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 16°C by the end. The sky is clear or mostly clear about 53% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 24 min by month's end. Set against the rest of the year, October is Ganghwa-gun's 1st-clearest and 9th-windiest month. For the whole year in context, see Ganghwa-gun's year-round climate.

Daytime high
19°
6th warmest
Overnight low
11°
7th coldest
Rainfall
52 mm
5.1 wet days
Daylight
11 hours
6:49 AM – 5:49 PM
Cloud cover
43%
1st clearest
Wind
10 km/h
9th windiest
Solar energy
3.71 kWh/m²
Travel score
7.0
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 16°C by the end.

A typical October day in Ganghwa-gun reaches about 19°C in the afternoon and slips back to 11°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 23°C. Set against its neighbours, October runs about 6°C cooler than September and about 8°C warmer than November.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12314
22214
32214
42213
52213
62213
72113
82112
92112
102112
112112
122012
132011
142011
152011
161911
171910
181910
191910
201810
21189
22189
23189
24179
25178
26178
27178
28168
29168
30167
31167

How October really feels in Ganghwa-gun

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.

Ganghwa-gun weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -6°173.52.19.70.0
Feb / -4°233.81.510.50.1
Mar / 335.20.711.72.3
Apr16° / 637012.95.3
May21° / 13°967.70146.9
Jun25° / 18°1208.7014.66.9
Jul27° / 22°30315.3014.35.4
Aug29° / 23°25114.2013.55.2
Sep25° / 18°1166.9012.37.2
Oct19° / 11°525.10117.0
Nov11° / 477.10.4103.1
Dec / -3°224.71.19.40.1

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% 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 33%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25941
35941
46040
56040
66139
76238
86337
96436
106535
116733
126733
136832
146832
156931
166931
177030
187030
197129
207129
217129
227228
237228
247129
257228
267228
277228
287129
297129
307030
316931

Chance of precipitation in October

Any precipitation

Ganghwa-gun gets around 52 mm of rain over 5.1 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 16% and peaks near 19% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
117
217
317
417
517
617
717
817
916
1016
1116
1215
1315
1415
1515
1615
1715
1815
1915
2015
2115
2215
2315
2415
2515
2616
2716
2817
2917
3018
3119

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 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14633164
24932154
35231143
45530123
55729113
66127102
7632692
8662482
9692272
10722161
11732061
12761851
13771751
14791641
15811441
16841330
17851230
18861130
19881020
2089920
2190910
2291810
2392710
2492710
2593610
2694600
2795500
2895500
2996400
3096400
3196400

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 11 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
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over October. Sunrise moves from 6:35 AM to 7:04 AM, and sunset from 6:12 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:356:12
211.66:356:10
311.56:366:08
411.56:376:07
511.56:386:05
611.46:396:04
711.46:406:02
811.36:416:01
911.36:425:59
1011.26:435:58
1111.26:445:56
1211.26:455:55
1311.16:465:54
1411.16:475:52
1511.06:485:51
1611.06:495:49
1711.06:505:48
1810.96:515:47
1910.96:525:45
2010.96:535:44
2110.86:545:43
2210.86:555:41
2310.76:565:40
2410.76:575:39
2510.76:585:38
2610.66:595:36
2710.67:005:35
2810.57:015:34
2910.57:025:33
3010.57:035:32
3110.47:045:31

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.71 kWh/m².

For context, solar energy here swings from a low near 2.31 kWh/m² to a high of 5.82 kWh/m² in May across the year — October's 3.71 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.0Bright
44.0Bright
54.0Bright
64.0Moderate
74.0Moderate
84.0Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.7Moderate
173.7Moderate
183.7Moderate
193.6Moderate
203.6Moderate
213.6Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.4Moderate
263.4Moderate
273.3Moderate
283.3Moderate
293.2Moderate
303.2Moderate
313.1Moderate
Planning a trip in October

Hazard calendar for Ganghwa-gun

In seasonPeak

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

Ganghwa-gun sits in the Pacific typhoon belt; the season peaks July–October.

Ganghwa-gun's rainy season runs July–August, 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 Ganghwa-gun?

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
3.3
Beach & pool
6th-best month of the year

October is one of the better times to visit Ganghwa-gun for general sightseeing.

What to pack for Ganghwa-gun in October

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

In October, Ganghwa-gun sees daytime highs around 19°C and nights near 11°C. Little to plan around — just the basics. About 5 days see rain.

Sea temperature near Ganghwa-gun 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 17 km away) is warmest in August at about 24°C and coldest in February near 4°C.

It's comfortable for a long swim from Jul 7 to Oct 10 — about 3.2 months when the water holds above 20°C.

0°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan5Bracing
Feb4Bracing
Mar5Bracing
Apr8Bracing
May13Bracing
Jun17Cool
Jul21Refreshing
Aug24Warm
Sep23Refreshing
Oct19Cool
Nov14Bracing
Dec9Bracing

UV index in Ganghwa-gun in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ganghwa-gun peaks around July 22 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 23 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 22UV 7Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May6High
Jun7High
Jul8Very high
Aug7Very high
Sep7High
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Ganghwa-gun 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 Ganghwa-gun is worst in March — around 160 µg/m³ PM2.5 (very unhealthy), about 2.0× the cleanest month (August, 81 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyVery unhealthyUnhealthyMar 13158 µg/m³Aug 1282 µg/m³
PM2.5 (µg/m³)Level
Jan145Unhealthy
Feb149Unhealthy
Mar160Very unhealthy
Apr127Unhealthy
May111Unhealthy
Jun98Unhealthy
Jul88Unhealthy
Aug81Unhealthy
Sep110Unhealthy
Oct132Unhealthy
Nov142Unhealthy
Dec133Unhealthy
Location & terrain

Where is Ganghwa-gun?

Ganghwa-gun sits at 37.7°N, 126.5°E, 15 m above sea level, in South Korea. The nearest listed city is Gimpo-si, 24 km away.

Yŏnan-ŭpIncheonBucheon-si

Topography around Ganghwa-gun

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

Within 3 km, the terrain around Ganghwa-gun has only modest variations in elevation — a maximum elevation change of 227 m around an average of 38 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 449 m; within 80 km, large variations in elevation — a maximum elevation change of 924 m.

The land around Ganghwa-gun is covered by trees (39%) and cropland (30%) within 3 km, cropland (31%), trees (30%) and water (23%) within 16 km, and water (33%) and trees (31%) within 80 km.

3 km
227 m
16 km
449 m
80 km
924 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Gimpo-si 24 km · Kaesŏng 26 km · Munsan 29 km · Paech’ŏn-ŭp 32 km · Goyang-si 32 km · Yŏnan-ŭp 34 km · Incheon 38 km · Bucheon-si 38 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 Ganghwa-gun (37.7472°, 126.4856°, elevation 15 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).