Jumunjin weather in October

In October, Jumunjin sees average daytime highs of 18°C and overnight lows near 10°C, with 76 mm of rain across 7.8 wet days and about 11 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 16°C by the end. The sky is clear or mostly clear about 47% 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 Jumunjin's 5th-clearest and 8th-windiest month. For the whole year in context, see Jumunjin's year-round climate.

Daytime high
18°
6th warmest
Overnight low
10°
7th coldest
Rainfall
76 mm
7.8 wet days
Daylight
11 hours
6:40 AM – 5:40 PM
Cloud cover
47%
5th clearest
Wind
10 km/h
8th windiest
Solar energy
3.6 kWh/m²
Travel score
6.2
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 16°C by the end.

A typical October day in Jumunjin reaches about 18°C in the afternoon and slips back to 10°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 21°C. Set against its neighbours, October runs about 5°C cooler than September and about 7°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12013
22013
32013
42013
52013
62012
72012
81912
91912
101912
111911
121911
131911
141811
151811
161810
171810
181810
191810
20179
21179
22179
23179
24179
25168
26168
27168
28168
29168
30157
31157

How October really feels in Jumunjin

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.

Jumunjin weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°4465.19.70.0
Feb / -4°425.64.710.50.1
Mar / 598.14.411.72.0
Apr15° / 707.70.9134.9
May20° / 12°787.70146.7
Jun23° / 17°989.7014.66.7
Jul26° / 21°20014.2014.45.9
Aug26° / 21°20515.6013.55.7
Sep23° / 16°16611.1012.36.5
Oct18° / 10°767.80116.2
Nov11° / 637.71.4103.2
Dec / -2°375.22.99.40.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35248
45347
55446
65545
75644
85743
95941
105941
116040
126139
136238
146337
156337
166337
176436
186436
196535
206535
216634
226634
236733
246832
256931
266832
276931
286931
296931
307030
316931

Chance of precipitation in October

Any precipitation

Jumunjin gets around 76 mm of rain over 7.8 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 25% and peaks near 29% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
129
229
329
429
529
628
728
828
928
1028
1127
1227
1327
1426
1526
1626
1725
1825
1924
2024
2123
2223
2322
2422
2521
2621
2721
2820
2920
3021
3121

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 85% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15830111
26029101
3622891
4652681
5672571
6692371
7722260
8752050
9761950
10791740
11811630
12831430
13841330
14861220
15871120
1689920
1791810
1892710
1993610
2094510
2196400
2296400
2397300
2497300
2597300
2698200
2798200
2898200
2999100
3099100
3199100

Wind in October

Winds average 10 km/h in October.

Across October, daily wind ranges from about 9 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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
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 6:25 AM to 6:55 AM, and sunset from 6:02 PM to 5:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:256:02
211.66:266:01
311.56:275:59
411.56:285:57
511.46:295:56
611.46:305:54
711.46:315:53
811.36:325:51
911.36:335:50
1011.26:345:48
1111.26:355:47
1211.26:365:45
1311.16:375:44
1411.16:385:43
1511.06:395:41
1611.06:405:40
1711.06:415:38
1810.96:425:37
1910.96:435:36
2010.86:445:34
2110.86:455:33
2210.86:465:32
2310.76:475:31
2410.76:485:29
2510.76:495:28
2610.66:505:27
2710.66:515:26
2810.56:525:25
2910.56:535:23
3010.56:545:22
3110.46:555:21

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.6 kWh/m².

For context, solar energy here swings from a low near 2.38 kWh/m² to a high of 5.9 kWh/m² in May across the year — October's 3.6 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.9Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.8Moderate
113.7Moderate
123.7Moderate
133.7Moderate
143.7Moderate
153.6Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.4Moderate
233.4Moderate
243.4Moderate
253.4Moderate
263.3Moderate
273.3Moderate
283.3Moderate
293.2Moderate
303.2Moderate
313.1Moderate
Planning a trip in October

Hazard calendar for Jumunjin

In seasonPeak

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

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

Jumunjin's rainy season runs June–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 Jumunjin?

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

6.2
Sightseeing
4th-best month of the year
2.1
Beach & pool
6th-best month of the year

October is a reasonable time to visit Jumunjin for sightseeing.

What to pack for Jumunjin in October

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

In October, Jumunjin sees daytime highs around 18°C and nights near 10°C. Little to plan around — just the basics. About 8 days see rain.

Sea temperature near Jumunjin 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 offshore is warmest in August at about 24°C and coldest in February near 9°C.

It's comfortable for a long swim from Jul 1 to Oct 7 — about 3.3 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan10Bracing
Feb9Bracing
Mar9Bracing
Apr12Bracing
May14Bracing
Jun18Cool
Jul22Refreshing
Aug24Warm
Sep22Refreshing
Oct19Cool
Nov16Cool
Dec13Bracing

UV index in Jumunjin 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 Jumunjin peaks around August 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateLowAug 16UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May6High
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Jumunjin 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 Jumunjin is worst in March — around 36 µg/m³ PM2.5 (poor), about 2.8× the cleanest month (September, 13 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateMar 2136 µg/m³Sep 1513 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb28Moderate
Mar36Poor
Apr34Moderate
May29Moderate
Jun21Moderate
Jul18Moderate
Aug16Moderate
Sep13Moderate
Oct17Moderate
Nov21Moderate
Dec19Moderate
Location & terrain

Where is Jumunjin?

Jumunjin sits at 37.9°N, 128.8°E, 9 m above sea level, in South Korea. The nearest listed city is Gangneung, 16 km away.

SokchoDonghae CitySantyokuKosongPyeongchangYangguT’aebaek

Topography around Jumunjin

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

Within 3 km, the terrain around Jumunjin has only modest variations in elevation — a maximum elevation change of 96 m around an average of 12 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,006 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,646 m.

The land around Jumunjin is covered by water (43%) and trees (30%) within 3 km, water (49%) and trees (43%) within 16 km, and trees (64%) and water (31%) within 80 km.

3 km
96 m
16 km
1,006 m
80 km
1,646 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Gangneung 16 km · Sokcho 41 km · Donghae City 46 km · Santyoku 59 km · Kosong 63 km · Pyeongchang 69 km · Yanggu 77 km · T’aebaek 81 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 Jumunjin (37.8914°, 128.8258°, elevation 9 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).