What to expect in Seoul in May
May is a strong choice for Seoul: 22° / 12°, with manageable crowds at the big attractions and prices close to the yearly average.
Seoul weather in May
Typical conditions in Seoul during May, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 22°C 72°F |
|---|---|
| Average low | 12°C 54°F |
| Rainfall | Moderate 35/100 |
| How it feels | Warm and comfortable |
Average highs sit around 22°C with lows near 12°C. Rainfall is moderate; the odd shower is likely.
Crowds & demand
Crowd levels are Moderate for Seoul — manageable crowds at the big attractions.
Prices & value
Prices run mid-range this month: prices close to the yearly average.
What to pack
Light layers for 22°C days and something with sleeves for evenings, which cool to around 12°C.
What it costs
Costs in May sit around the yearly average for Seoul — neither a bargain nor a squeeze. Booking a few weeks out is usually enough. Compared with the most expensive month of the year, you are looking at roughly 31% less.
Who this month suits
- Travellers who want the most reliable weather
- Anyone travelling on a budget
- Visitors who want to catch a festival
Events & what’s on
Look out for Buddha's Birthday Lantern Festival while you’re there.
- Buddha's Birthday Lantern Festival — Thousands of paper lanterns parade from Dongdaemun to Jogyesa Temple after dark.
Seoul in May compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| March | 10° / -1° | Low | $ | 60 |
| April | 17° / 6° | High | $$$ | 43 |
| May · This month | 22° / 12° | Moderate | $$ | 63 |
| June | 27° / 17° | Low | $ | 67 |
| July | 29° / 22° | Low | $ | 64 |
These months score higher for Seoul on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in May
If the destination is negotiable but the month is not, these places are at their best in May.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated August 2026
