South Korea Busan Weather in May — Climate Guide
May in Busan is high
May is high for Busan.
Warm + pleasant. Korean Children's Day May 5 family travel. Pre-monsoon shoulder.
Travel score
Busan May Weather Stats
Avg High
21°C
Avg Low
14°C
Rainy Days
9
110mm total
Sunshine
8h
Daily avg
Humidity
70%
moderate
UV Index
7
High
Wind
7 km/h
Gusts 18
Sea Temp
17°C
swimming chilly
Crowds
Busy
At attractions
May Sunrise & Sunset
Air Quality
PM2.5
13 μg/m³
PM10
23 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
22°C
Nighttime
14°C
Humidity and wind affect how the actual temperature feels.
Wind
7 km/h
Max gust 18 km/h
Activities Recommended for May
May Travel Pros & Cons
Pros
- 21°C ideal
- Pre-monsoon shoulder
- Sea warming
- Less crowded post-cherry blossom
Cons
- Pre-monsoon rain
- Hotels still high
May Events & Festivals
- Korean Children's Day May 5
- Buddha's Birthday (varies May)
Busan in May — Full Picture
Warm + pleasant. Korean Children's Day May 5 family travel. Pre-monsoon shoulder.
What to Wear & What to Pack
Warm. T-shirt + light layers.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current16.7°C
9.7°C
8.3/mo
Summer (Jun·Jul·Aug)
27.3°C
21.3°C
11.7/mo
Autumn (Sep·Oct·Nov)
21.3°C
13.7°C
7.3/mo
Winter (Dec·Jan·Feb)
9°C
2°C
5.3/mo
Busan Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 8° | 1° | 5d·35mm | 6h | 50% | 2 | Quiet | Low season | |
| 9° | 2° | 6d·45mm | 6h | 55% | 3 | Quiet | Low season | |
| 12° | 5° | 8d·75mm | 7h | 60% | 5 | Moderate | Shoulder | |
| April (Best) | 17° | 10° | 8d·100mm | 8h | 65% | 6 | Very busy | Peak |
| 21° | 14° | 9d·110mm | 8h | 70% | 7 | Busy | Peak | |
| 24° | 18° | 11d·200mm | 6h | 80% | 8 | Moderate | Shoulder | |
| 28° | 22° | 13d·280mm | 5h | 80% | 9 | Busy | Peak | |
| 30° | 24° | 11d·200mm | 7h | 78% | 10 | Very busy | Peak | |
| 26° | 19° | 9d·150mm | 7h | 75% | 7 | Busy | Peak | |
| October (Best) | 22° | 14° | 7d·80mm | 7h | 65% | 5 | Very busy | Peak |
| 16° | 8° | 6d·60mm | 6h | 60% | 3 | Moderate | Shoulder | |
| 10° | 3° | 5d·40mm | 6h | 55% | 2 | Moderate | Shoulder |
View Other Months
Busan May Hotel Picks
Frequently Asked Questions
Is May a good time to visit Busan?
Busan in May is high. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Busan in May?
Busan May averages a high of 21°C and a low of 14°C.
Does it rain much in Busan in May?
Busan May averages 110mm of rainfall over about 9 rainy days.
What should I wear in Busan in May?
Warm. T-shirt + light layers.
What time are sunrise and sunset in Busan in May?
Busan May sunrise is 05:20 and sunset is 19:10, with 13h 50min of daylight.
What's the air quality like in Busan in May?
Busan May air quality (AQI) averages 38, rated Good. PM2.5 averages 13μg/m³.
What activities are recommended in Busan in May?
In May, Busan is great for Haedong Yonggungsa, Beomeosa, Gamcheon.
Is May peak season in Busan?
Busan May crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Busan
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.