Jeju weather in June

In June, Jeju sees average daytime highs of 22°C and overnight lows near 19°C, with 189 mm of rain across 11.6 wet days and about 14.2 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 23°C by the end. The sky is clear or mostly clear about 21% of the time in June, and the air most often feels humid.

Daylight stretches from about 14 h 06 min at the start of June to 14 h 12 min by month's end. Set against the rest of the year, June is Jeju's 11th-clearest and 12th-windiest month. For the whole year in context, see Jeju's year-round climate.

Daytime high
22°
4th warmest
Overnight low
19°
9th coldest
Rainfall
189 mm
11.6 wet days
Daylight
14 h 12 min
5:28 AM – 7:40 PM
Cloud cover
71%
11th clearest
Wind
13 km/h
12th windiest
Solar energy
5.08 kWh/m²
Travel score
6.1
out of 10

Jeju is city in South Korea.

Density
500/km²
people per km²

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 23°C by the end.

A typical June day in Jeju reaches about 22°C in the afternoon and slips back to 19°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 24°C. Set against its neighbours, June runs about 3°C warmer than May and about 4°C cooler than July.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12017
22017
32017
42117
52118
62118
72118
82118
92118
102118
112118
122119
132219
142219
152219
162219
172219
182220
192220
202220
212320
222320
232320
242320
252321
262321
272321
282421
292421
302421

How June really feels in Jeju

Once humidity and wind are folded in, June 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

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

Jeju weather by month

How June compares with the rest of the year at a glance. June is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7311.62.6101.1
Feb / 649.31.710.81.5
Mar11° / 9510.30.411.72.9
Apr15° / 11°1028.9012.84.6
May19° / 15°1098.8013.76.2
Jun22° / 19°18911.6014.26.1
Jul26° / 24°18412.10146.2
Aug27° / 25°16813.7013.25.9
Sep24° / 22°16511.1012.26.7
Oct20° / 17°796.8011.26.9
Nov15° / 12°708.8010.34.7
Dec10° / 68111.19.82.3

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 13% of June, with mostly cloudy or overcast conditions the remaining 67%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24555
34456
44555
54456
64456
74357
84258
94159
104060
113862
123763
133664
143565
153466
163367
173268
183070
192971
202872
212773
222674
232476
242476
252278
262278
272278
282179
292179
302179

Chance of precipitation in June

Any precipitation

Jeju gets around 189 mm of rain over 11.6 wet days in June, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 38% and peaks near 51% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
125
226
326
427
527
628
728
829
930
1031
1132
1233
1334
1436
1537
1639
1740
1841
1943
2044
2145
2246
2347
2448
2549
2650
2750
2851
2951
3051

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the humid band about 39% of days. Sticky, muggy-or-worse air turns up on roughly 48% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1123645700
2103447800
3932491000
4830501200
5627531400
6525541600
7422551900
8319572100
9217562410
10215552710
11112563010
12110543320
1319523620
1417504030
1506484340
1605454550
1704424860
1803395080
19033651100
20023353120
21023054140
22022754170
23012455200
24012154240
25011953270
26011752300
27011551330
28011350361
29011148391
30001046421

Wind in June

Winds average 13 km/h in June, the calmest month.

Across June, daily wind ranges from about 12 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3015light breeze

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 06 min at the start of June to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over June. Sunrise moves from 5:30 AM to 5:31 AM, and sunset from 7:33 PM to 7:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:307:33
214.15:307:34
314.15:297:34
414.15:297:35
514.15:297:35
614.15:297:36
714.15:287:36
814.15:287:37
914.25:287:37
1014.25:287:38
1114.25:287:38
1214.25:287:39
1314.25:287:39
1414.25:287:40
1514.25:287:40
1614.25:287:40
1714.25:287:41
1814.25:287:41
1914.25:287:41
2014.25:287:42
2114.25:287:42
2214.25:297:42
2314.25:297:42
2414.25:297:43
2514.25:297:43
2614.25:307:43
2714.25:307:43
2814.25:307:43
2914.25:317:43
3014.25:317:43

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.08 kWh/m².

For context, solar energy here swings from a low near 2.09 kWh/m² to a high of 5.73 kWh/m² in May across the year — June's 5.08 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.3Bright
135.3Bright
145.2Bright
155.2Bright
165.1Bright
175.0Bright
185.0Bright
194.9Bright
204.8Bright
214.8Bright
224.7Bright
234.7Bright
244.6Bright
254.6Bright
264.5Bright
274.5Bright
284.5Bright
294.4Bright
304.4Bright
Planning a trip in June

Hazard calendar for Jeju

In seasonPeak

In June, Jeju sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

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

Jeju's rainy season runs March–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 June a good time to visit Jeju?

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

6.1
Sightseeing
5th-best month of the year
4.2
Beach & pool
4th-best month of the year

June is a reasonable time to visit Jeju for sightseeing.

What to pack for Jeju in June

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

In June, Jeju sees daytime highs around 22°C and nights near 19°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Jeju in June

The nearest coast averages about 20°C in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 km away) is warmest in August at about 27°C and coldest in March near 14°C.

It's comfortable for a long swim from Jun 18 to Nov 4 — about 4.6 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar14Bracing
Apr14Bracing
May16Cool
Jun20Cool
Jul24Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Jeju in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jeju peaks around July 16 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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 16UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7High
May8Very high
Jun8Very high
Jul10Very high
Aug8Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Jeju in June

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Jeju is worst in March — around 30 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (July, 13 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2130 µg/m³Jul 2413 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb25Moderate
Mar30Moderate
Apr29Moderate
May23Moderate
Jun18Moderate
Jul13Moderate
Aug13Moderate
Sep14Moderate
Oct15Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Jeju?

Jeju sits at 33.5°N, 126.5°E, 19 m above sea level, in South Korea. The nearest listed city is Ido-dong, 1.0 km away.

Haenam

Topography around Jeju

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

Within 3 km, the terrain around Jeju has only modest variations in elevation — a maximum elevation change of 141 m around an average of 43 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,836 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,915 m.

The land around Jeju is covered by artificial surfaces (51%) and water (29%) within 3 km, water (47%) and trees (36%) within 16 km, and water (88%) within 80 km.

3 km
141 m
16 km
1,836 m
80 km
1,915 m
treesgrasslandcroplandartificial surfaceswater
June weather nearby: Ido-dong 1.0 km · Ora-dong 3.0 km · Seodong 4.0 km · Ara-dong 5.0 km · Tallang-dong 5.0 km · Gaigeturi 20 km · Seogwipo 29 km · Haenam 118 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 Jeju (33.5097°, 126.5219°, elevation 19 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).