Incheon Weather in May: What to Expect
In May, Incheon averages highs of 20.5°C and lows of 12.1°C, with about 8 rainy days (~100 mm). Verdict: Good — comfortable — manageable 20.5°C days. That makes it the coolest of South Korea's 6 main cities this month.
Incheon vs other South Korea cities in May
South Korea is not one climate. In May, Gyeongju runs to 24.6°C while Incheon sits at 20.5°C — a 4°C spread. Here is where Incheon falls:
What to pack for Incheon in May
With highs near 20.5°C and lows around 12.1°C, pack layers — a light jacket for mornings and evenings, a compact umbrella or rain shell.
Incheon is on the coast — add swimwear; the water can feel cool for swimming this month.
What to do in Incheon in May
May's weather suits sightseeing through the day. Top sights:
Public holidays in South Korea, May
- 2026-05-01 — Labour Day
- 2026-05-05 — Children's Day
- 2026-05-25 — Buddha's Birthday
- 2027-05-03 — Labour Day
- 2027-05-05 — Children's Day
- 2027-05-13 — Buddha's Birthday
Incheon in May — FAQs
What is the weather like in Incheon in May?
In May, Incheon averages daytime highs of 20.5°C and overnight lows around 12.1°C, with roughly 8 rainy days and about 100 mm of rain across the month. Good — comfortable — manageable 20.5°C days.
Is May a good time to visit Incheon?
Good — comfortable. May is comfortable enough for full-day sightseeing in Incheon. Among South Korea's cities, Incheon is the coolest this month.
What should I pack for Incheon in May?
For May (12.1–20.5°C), pack layers — a light jacket for mornings and evenings, a compact umbrella or rain shell.
What is there to do in Incheon in May?
Incheon's main sights include Taeanhaean National Park, Gwangmyeong Cave. The weather suits visiting these comfortably through the day.
Are there public holidays in South Korea in May?
Yes — Labour Day (2026-05-01), Children's Day (2026-05-05), Buddha's Birthday (2026-05-25), Labour Day (2027-05-03), Children's Day (2027-05-05), Buddha's Birthday (2027-05-13). Sites can be busier or closed around these dates.
Incheon weather by month: