March weather forecast
Jeju, South Korea

March ushers in milder weather, a transition phase between winter and spring in Jeju. With daily highs reaching 12.8°C (55°F), the month showcases a gradual increase in temperatures as the heavy winter coats start to give way to lighter attire. March marks the highly anticipated start of the Cherry Blossom Festival making it a remarkable month for visitors. While days are still short, they increase in length, illuminating the island's beauty a bit longer. March's weather flexibility offers conducive conditions for various outdoor activities from hiking to strolling along Jeju's famed coastline.

Temperature

With the transition into March, Jeju experiences a subtle uplift in average high-temperatures, adjusting from a chilly 9.4°C (48.9°F) in February to a fresh 12.8°C (55°F). Jeju's average low-temperature for the month of March records at a chilly 6.1°C (43°F).

Humidity

February and March, with an average relative humidity of 64.9%, are the least humid months.

Rainfall

In Jeju, during March, the rain falls for 11.2 days and regularly aggregates up to 89mm (3.5") of precipitation. In Jeju, during the entire year, the rain falls for 130.2 days and collects up to 1498mm (58.98") of precipitation.

Sea temperature

The month with the coldest seawater is March, with an average sea temperature of 13.3°C (55.9°F).
Note: Swimming in 13.3°C (55.9°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In Jeju, the average length of the day in March is 11h and 59min.
On the first day of March, sunrise is at 07:01 and sunset at 18:30. On the last day of the month, sunrise is at 06:22 and sunset at 18:53 KST.

Sunshine

The average sunshine in March is 5.1h.

UV index

In Jeju, the average daily maximum UV index in March is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In March, the maximum UV index of 6 translates into these guidelines:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.