yearsofweather

Jeju in June:
comfortably warm, rain on many days

Jeju, South Korea · Records from 2006 to 2025. Not a forecast.

Mean high25°Hottest day 31.4° (2025)
Mean low19°Coldest night 14.3° (2006)
Rain days9 days3-14 by year
Rainfall161mmDaylight 14.2 → 14.3 h
Jeju's 12 months iBest: May, June and October
Trip types Beach Poorcool seaSightseeing on foot Finemild
Humidity85%13 muggy days
Clear days2 days17 overcast days
Mean wind10 km/hRarely windy
Sea temperature20.7°19.6-22.3° by year (last 6)
Sunrise / sunset (15th)05:23 / 19:45Daylight 14.2 → 14.3 h

Jeju in June

Korea's rainy season reaches Jeju first. The long-term average start is June 19, though in some years it arrives about ten days later. Once it sets in, days turn sticky and overcast, so pack an umbrella and quick-dry clothes. In recent years Hyeopjae, Hamdeok and most of the other official beaches opened in late June.

Afternoons reached 25°C and nights settled at 19°C, warm enough to linger over lunch outdoors. With 9 rain days on average, a wet day was rarely more than a few days away. Counts moved moderately between years: 3 in 2022, 14 in 2011.

Rain days averaged 18 mm each, so when it rained it rained properly.

How long it rained

On a rainy day it rained for about 8.0 hours. Rain came at any time of day.

Typhoons i

1 of the last 20 years had a tropical storm pass within 300 km this month.

  • Meari (2011), 170 km away tropical storm
1 2 3 4 5 16 77 108 89 410 111 12

Date by date i

‹ May June 2027 July ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-5rain on 16% of days24° 17°
6-12rain on 26% of days24° 19°
13-19rain on 29% of days25° 19°
20-26rain on 36% of days26° 20°
27-30rain on 45% of days26° 21°

0-5/206-8/209-11/2012-20/20

1-5rain on 16% of days24° 17°
6-12rain on 26% of days24° 19°
13-19rain on 29% of days25° 19°
20-26rain on 36% of days26° 20°
27-30rain on 45% of days26° 21°
Tap another date to change

200619mm
20075mm
200855mm
2009none
2010none
2011none
201243mm
201320mm
2014none
201534mm
2016none
20174mm
2018none
2019none
202027mm
2021none
202243mm
20233mm
2024none
202513mm
Holidays in June (2027)
  • June 6 Memorial Day
  • June 18 Juneteenth (observed)
  • June 19 Juneteenth National Independence Day

1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)

Day by day temperature i

16°22°27°33° 1815222930

Mean high Mean low Coldest to warmest high in 20 years

Your trip dates, the past 20 years

Trip dates ~

You can also click two dates on the axis. Hover a cell to see that day's rain.
Trip rain days Month rain days
2006
3 d 10 d
2007
0 d 9 d
2008
2 d 13 d
2009
2 d 10 d
2010
2 d 8 d
2011
3 d 14 d
2012
1 d 8 d
2013
2 d 10 d
2014
0 d 4 d
2015
2 d 13 d
2016
2 d 11 d
2017
4 d 8 d
2018
2 d 9 d
2019
1 d 6 d
2020
2 d 9 d
2021
2 d 4 d
2022
0 d 3 d
2023
1 d 9 d
2024
2 d 9 d
2025
4 d 13 d
Years with rain
Tap a date to start, tap another to end. Each cell is that date in one year.
'06'07'08'09'10'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
of 20
2
4
4
2
4
4
2
6
4
8
8
5
5
7
7
3
6
6
6
6
7
7
8
11
7
5
10
7
10
9
Rain days on trip
30222312022421220124

No rain1-9 mm10 mm or more Dates outside your trip are dimmed.

One row per year, one cell per day. 2022 had 3 rain days, 2011 had 14.

Jeju through the year

MonthHighLowRain daysRainfallSea
January 9°4°8 days59mm 16°
February 10°4°8 days67mm 15°
March 14°7°8 days85mm 14°
April 18°11°8 days89mm 15°
MayGood 22°15°7 days93mm 17°
JuneGood 25°19°9 days161mm 21°
July 30°24°9 days201mm 25°
August 30°25°10 days254mm 28°
September 27°21°10 days290mm 27°
OctoberGood 22°16°6 days107mm 23°
November 17°11°8 days90mm 20°
December 11°6°9 days54mm 17°

Common questions

Does it rain a lot in Jeju in June?

Over the past 20 years June averaged 9 rain days (1 mm or more) out of 30. Individual years ran from 3 in the driest to 14 in the wettest.

What should I wear in Jeju in June?

Days averaged 25°C and nights 19°C. Pack a compact umbrella, T-shirts, a light layer for the evenings, and sunscreen plus a hat.

Can you swim in Jeju in June?

Sea surface temperature averaged 20.7°C in June, more for a paddle than a swim. Year to year it ranged 19.6-22.3°C. Check local flags for waves and jellyfish on the day.

Is June a good time to visit Jeju?

On warmth and rain days alone, Jeju's easiest months were May, June and October. June ranked 3 of 12, close to the top.

Is Jeju humid in June?

Mean relative humidity was 85%, with about 13 muggy days (dew point of 20°C or more) in the month.