Jeju weather in March
Temperature, sea and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Fair
Best time to visit: April – June, September – October
What is the weather like in Jeju in March?
In March, Jeju is cool: daytime highs average 12 °C, and nights cool down to about 7 °C. The sea averages 13.8 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 94 mm in total. All in all, March is a so-so month for a holiday in Jeju.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 28 | 46 | 70 |
| Day | 9° | 12° | 16° |
| Night | 5° | 7° | 11° |
| Sea | 14° | 14° | 15° |
| Sun | 4 h | 5 h | 7 h |
| Rain days | 8 | 9 | 9 |
More details for March
- Daylight
- 11 h 55 min06:46 – 18:41
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 20 km/haverage daily peakAll months
- Cloud cover
- 62 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+9Asia/Seoul
How the score comes together
- Temperatureweight 50 %40 %
- Sunshineweight 20 %40 %
- Few rainy daysweight 30 %61 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in March
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Jeju in March: quick answers
Is Jeju hot in March?
No. In March, Jeju is cool: daytime highs average 12 °C and nights drop to about 7 °C.
Can you swim in Jeju in March?
Only if you don't mind cold water: in March the sea averages just 13.8 °C. Comfortable swimming is possible from June to October.
Does it rain much in Jeju in March?
Rain is frequent, with about 9 rainy days and 94 mm in total.
Jeju month by month
The whole year in JejuAll destinations: South KoreaWhere to go in MarchSea temperature in March
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences