Beach
Ihohaesuyokjang
Jeju-do · South Korea · East China Sea
33.4983, 126.4531 · Tallang-dong, 2 km
- 27°Sea · August
- 28°High · August
- 6.0 hSunshine · August
Your month at the beach
Ihohaesuyokjang in January
- 9°CAir, daytime high6°C at night
- 15°CSea temperature
- 2.7 hSunshine a day
- 8 daysRainy days in the month50 mm in total
- 28 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| December | January | February | |
|---|---|---|---|
| Air, daytime high | 11° | 9° | 9° |
| Sea | 16° | 15° | 14° |
| Sunshine a day | 2.7 h | 2.7 h | 3.9 h |
| Rainy days | 8 | 8 | 8 |
Ihohaesuyokjang in February
- 9°CAir, daytime high6°C at night
- 14°CSea temperature
- 3.9 hSunshine a day
- 8 daysRainy days in the month66 mm in total
- 26 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| January | February | March | |
|---|---|---|---|
| Air, daytime high | 9° | 9° | 11° |
| Sea | 15° | 14° | 13° |
| Sunshine a day | 2.7 h | 3.9 h | 5.4 h |
| Rainy days | 8 | 8 | 10 |
Ihohaesuyokjang in March
- 11°CAir, daytime high8°C at night
- 13°CSea temperature
- 5.4 hSunshine a day
- 10 daysRainy days in the month90 mm in total
- 24 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| February | March | April | |
|---|---|---|---|
| Air, daytime high | 9° | 11° | 14° |
| Sea | 14° | 13° | 14° |
| Sunshine a day | 3.9 h | 5.4 h | 5.9 h |
| Rainy days | 8 | 10 | 10 |
Ihohaesuyokjang in April
- 14°CAir, daytime high12°C at night
- 14°CSea temperature
- 5.9 hSunshine a day
- 10 daysRainy days in the month136 mm in total
- 21 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| March | April | May | |
|---|---|---|---|
| Air, daytime high | 11° | 14° | 18° |
| Sea | 13° | 14° | 16° |
| Sunshine a day | 5.4 h | 5.9 h | 5.8 h |
| Rainy days | 10 | 10 | 10 |
Ihohaesuyokjang in May
- 18°CAir, daytime high15°C at night
- 16°CSea temperature
- 5.8 hSunshine a day
- 10 daysRainy days in the month141 mm in total
- 18 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| April | May | June | |
|---|---|---|---|
| Air, daytime high | 14° | 18° | 22° |
| Sea | 14° | 16° | 20° |
| Sunshine a day | 5.9 h | 5.8 h | 4.3 h |
| Rainy days | 10 | 10 | 13 |
Ihohaesuyokjang in June
- 22°CAir, daytime high20°C at night
- 20°CSea temperature
- 4.3 hSunshine a day
- 13 daysRainy days in the month192 mm in total
- 16 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| May | June | July | |
|---|---|---|---|
| Air, daytime high | 18° | 22° | 26° |
| Sea | 16° | 20° | 24° |
| Sunshine a day | 5.8 h | 4.3 h | 5.0 h |
| Rainy days | 10 | 13 | 17 |
Ihohaesuyokjang in July
- 26°CAir, daytime high24°C at night
- 24°CSea temperature
- 5.0 hSunshine a day
- 17 daysRainy days in the month240 mm in total
- 18 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| June | July | August | |
|---|---|---|---|
| Air, daytime high | 22° | 26° | 28° |
| Sea | 20° | 24° | 27° |
| Sunshine a day | 4.3 h | 5.0 h | 6.0 h |
| Rainy days | 13 | 17 | 18 |
Ihohaesuyokjang in August
- 28°CAir, daytime high26°C at night
- 27°CSea temperature
- 6.0 hSunshine a day
- 18 daysRainy days in the month261 mm in total
- 19 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| July | August | September | |
|---|---|---|---|
| Air, daytime high | 26° | 28° | 24° |
| Sea | 24° | 27° | 25° |
| Sunshine a day | 5.0 h | 6.0 h | 5.1 h |
| Rainy days | 17 | 18 | 10 |
Ihohaesuyokjang in September
- 24°CAir, daytime high23°C at night
- 25°CSea temperature
- 5.1 hSunshine a day
- 10 daysRainy days in the month185 mm in total
- 20 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| August | September | October | |
|---|---|---|---|
| Air, daytime high | 28° | 24° | 20° |
| Sea | 27° | 25° | 22° |
| Sunshine a day | 6.0 h | 5.1 h | 5.7 h |
| Rainy days | 18 | 10 | 6 |
Ihohaesuyokjang in October
- 20°CAir, daytime high18°C at night
- 22°CSea temperature
- 5.7 hSunshine a day
- 6 daysRainy days in the month89 mm in total
- 22 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| September | October | November | |
|---|---|---|---|
| Air, daytime high | 24° | 20° | 16° |
| Sea | 25° | 22° | 19° |
| Sunshine a day | 5.1 h | 5.7 h | 4.1 h |
| Rainy days | 10 | 6 | 8 |
Ihohaesuyokjang in November
- 16°CAir, daytime high13°C at night
- 19°CSea temperature
- 4.1 hSunshine a day
- 8 daysRainy days in the month72 mm in total
- 23 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| October | November | December | |
|---|---|---|---|
| Air, daytime high | 20° | 16° | 11° |
| Sea | 22° | 19° | 16° |
| Sunshine a day | 5.7 h | 4.1 h | 2.7 h |
| Rainy days | 6 | 8 | 8 |
Ihohaesuyokjang in December
- 11°CAir, daytime high8°C at night
- 16°CSea temperature
- 2.7 hSunshine a day
- 8 daysRainy days in the month56 mm in total
- 27 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
And a month earlier or later?
| November | December | January | |
|---|---|---|---|
| Air, daytime high | 16° | 11° | 9° |
| Sea | 19° | 16° | 15° |
| Sunshine a day | 4.1 h | 2.7 h | 2.7 h |
| Rainy days | 8 | 8 | 8 |
Warmest sea of the year: August (26.6 °C) · most sunshine: August (6.0 h a day).
The beach itself
- 127Places to stay within 5 kmHotels, guest houses, apartments and campsites · OpenStreetMap
- 4 kmAirport: Jeju International Airport (CJU)In a straight line; by road it is further Car hire at CJU airport (Jeju City)
No reliable information yet on: bathing water quality, wheelchair access, lifeguards.
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
January from 2020 to 2025
In January 2025 the sea averaged 15.1 °C — 0.3 °C above the 1991–2020 average.
1991–2020 average: 14.8 °C
1991–2020 average: 8.7 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
February from 2020 to 2025
In February 2025 the sea averaged 13.6 °C — about the same as the 1991–2020 average.
1991–2020 average: 13.6 °C
1991–2020 average: 9.3 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
March from 2020 to 2025
In March 2025 the sea averaged 12.4 °C — 0.9 °C below the 1991–2020 average.
1991–2020 average: 13.3 °C
1991–2020 average: 11.4 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
April from 2020 to 2025
In April 2025 the sea averaged 13.9 °C — about the same as the 1991–2020 average.
1991–2020 average: 14.0 °C
1991–2020 average: 14.5 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
May from 2020 to 2025
In May 2025 the sea averaged 15.3 °C — 0.7 °C below the 1991–2020 average.
1991–2020 average: 16.0 °C
1991–2020 average: 17.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
June from 2020 to 2025
In June 2025 the sea averaged 19.8 °C — about the same as the 1991–2020 average.
1991–2020 average: 19.8 °C
1991–2020 average: 21.6 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
July from 2020 to 2025
In July 2025 the sea averaged 26.6 °C — 2.7 °C above the 1991–2020 average.
1991–2020 average: 23.9 °C
1991–2020 average: 25.6 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
August from 2020 to 2025
In August 2025 the sea averaged 29.0 °C — 2.4 °C above the 1991–2020 average.
1991–2020 average: 26.6 °C
1991–2020 average: 27.6 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
September from 2020 to 2025
In September 2025 the sea averaged 28.5 °C — 3.9 °C above the 1991–2020 average.
1991–2020 average: 24.6 °C
1991–2020 average: 24.5 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
October from 2020 to 2025
In October 2025 the sea averaged 25.9 °C — 4.2 °C above the 1991–2020 average.
1991–2020 average: 21.7 °C
1991–2020 average: 20.4 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
November from 2020 to 2025
In November 2025 the sea averaged 20.8 °C — 2.2 °C above the 1991–2020 average.
1991–2020 average: 18.6 °C
1991–2020 average: 15.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
December from 2020 to 2025
In December 2025 the sea averaged 17.8 °C — 1.5 °C above the 1991–2020 average.
1991–2020 average: 16.3 °C
1991–2020 average: 10.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
When to go
1991–2020 averagesThe year at a glance
- Jan15°3 h50 mm
- Feb14°4 h66 mm
- Mar13°5 h90 mm
- Apr14°6 h136 mm
- May16°6 h141 mm
- Jun20°4 h192 mm
- Jul24°5 h240 mm
- Aug27°6 h261 mm
- Sep25°5 h185 mm
- Oct22°6 h89 mm
- Nov19°4 h72 mm
- Dec16°3 h56 mm
Each card is a month. The colour is the sea temperature, on the same scale as the map; in bold, the two best months for each.
Sea temperature
1991–2020 averagesClimate through the year
1991–2020 averagesRain
Sunshine
Sunshine hours are estimated from measured solar radiation, not observed directly.
Month by month
1991–2020 averagesEvery month at Ihohaesuyokjang: air, sea, rain and sunshine. Averages for 1991–2020.
| Month | High°C | Low°C | Sea°C | Rainmm | Rainy daysdays | Sunshineh/day | Windkm/h |
|---|---|---|---|---|---|---|---|
| January | 9 | 6 | 15 | 50 | 8 | 2.7 | 28 |
| February | 9 | 6 | 14 | 66 | 8 | 3.9 | 26 |
| March | 11 | 8 | 13 | 90 | 10 | 5.4 | 24 |
| April | 14 | 12 | 14 | 136 | 10 | 5.9 | 21 |
| May | 18 | 15 | 16 | 141 | 10 | 5.8 | 18 |
| June | 22 | 20 | 20 | 192 | 13 | 4.3 | 16 |
| July | 26 | 24 | 24 | 240 | 17 | 5.0 | 18 |
| Augustwarmest sea | 28 | 26 | 27 | 261 | 18 | 6.0 | 19 |
| September | 24 | 23 | 25 | 185 | 10 | 5.1 | 20 |
| October | 20 | 18 | 22 | 89 | 6 | 5.7 | 22 |
| November | 16 | 13 | 19 | 72 | 8 | 4.1 | 23 |
| December | 11 | 8 | 16 | 56 | 8 | 2.7 | 27 |
Swipe sideways to see the other columns.
Plan your trip
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
About these numbers
Averages are for 1991–2020; the recent years (2020–2025) are what actually happened. Neither is today's weather.
| What | Where it comes from | Nearest measurement |
|---|---|---|
| Air, rain and sunshine | NASA POWER | 19 km away |
| Sea temperature | NOAA OISST v2.1, 1991–2020 | 16 km away |
| 2020–2025, month by month | NASA POWER · NOAA OISST v2.1 | 19 km away |
| Lifeguards and places to stay | OpenStreetMap | within 1–5 km |
| Nearest airport | OurAirports | straight-line distance |
| Image at the top | Sentinel-2 cloudless (EOX) | at this spot |