South Korea Jeju Island Weather in March — Climate Guide
March in Jeju Island is high
March is high for Jeju Island.
Spring beginning + pre-cherry blossom shoulder. Hotels improving + weather warming. Hallasan trails opening.
Travel score
Jeju Island March Weather Stats
Avg High
12°C
Avg Low
5°C
Rainy Days
9
90mm total
Sunshine
7h
Daily avg
Humidity
70%
moderate
UV Index
5
Moderate
Wind
9 km/h
Gusts 25
Sea Temp
13°C
no swimming
Crowds
Moderate
At attractions
March Sunrise & Sunset
Air Quality
PM2.5
13 μg/m³
PM10
23 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
11°C
Nighttime
4°C
Humidity and wind affect how the actual temperature feels.
Wind
9 km/h
Max gust 25 km/h
Activities Recommended for March
March Travel Pros & Cons
Pros
- 12°C improving
- Daylight 12h
- Pre-peak prices
- Hallasan trails opening
Cons
- 90mm rain
- Variable weather
- Sea cool
March Events & Festivals
- Spring blooms
- Pre-cherry blossom shoulder
Jeju Island in March — Full Picture
Spring beginning + pre-cherry blossom shoulder. Hotels improving + weather warming. Hallasan trails opening.
What to Wear & What to Pack
Spring start. Light coat + sweater.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current16.7°C
9.7°C
9/mo
Summer (Jun·Jul·Aug)
27°C
21.3°C
11.7/mo
Autumn (Sep·Oct·Nov)
21.7°C
14.3°C
7.7/mo
Winter (Dec·Jan·Feb)
9.3°C
3.3°C
7.7/mo
Jeju Island Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 8° | 2° | 8d·60mm | 5h | 65% | 2 | Quiet | Low season | |
| 9° | 3° | 8d·65mm | 6h | 68% | 3 | Quiet | Low season | |
| 12° | 5° | 9d·90mm | 7h | 70% | 5 | Moderate | Shoulder | |
| April (Best) | 17° | 10° | 9d·100mm | 8h | 70% | 6 | Very busy | Peak |
| May (Best) | 21° | 14° | 9d·100mm | 9h | 75% | 7 | Very busy | Peak |
| 24° | 18° | 11d·200mm | 6h | 80% | 8 | Moderate | Shoulder | |
| 28° | 22° | 13d·280mm | 6h | 80% | 9 | Busy | Peak | |
| 29° | 24° | 11d·200mm | 7h | 78% | 10 | Very busy | Peak | |
| 26° | 19° | 9d·200mm | 7h | 75% | 7 | Busy | Peak | |
| October (Best) | 22° | 14° | 7d·100mm | 8h | 65% | 5 | Very busy | Peak |
| November (Best) | 17° | 10° | 7d·80mm | 7h | 60% | 3 | Busy | Peak |
| 11° | 5° | 7d·50mm | 6h | 60% | 2 | Moderate | Shoulder |
View Other Months
Jeju Island March Hotel Picks
Frequently Asked Questions
Is March a good time to visit Jeju Island?
Jeju Island in March is high. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Jeju Island in March?
Jeju Island March averages a high of 12°C and a low of 5°C.
Does it rain much in Jeju Island in March?
Jeju Island March averages 90mm of rainfall over about 9 rainy days.
What should I wear in Jeju Island in March?
Spring start. Light coat + sweater.
What time are sunrise and sunset in Jeju Island in March?
Jeju Island March sunrise is 06:45 and sunset is 18:35, with 11h 50min of daylight.
What's the air quality like in Jeju Island in March?
Jeju Island March air quality (AQI) averages 38, rated Good. PM2.5 averages 13μg/m³.
What activities are recommended in Jeju Island in March?
In March, Jeju Island is great for Seongsan Sunrise Peak, Manjanggul, Hallasan Eorimok trail.
Is March peak season in Jeju Island?
Jeju Island March crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Jeju Island
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.