Weather in Seoul in May
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Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youIn May, Seoul sees average highs of 22.2°C (72.0°F) and lows of 11.6°C. Conditions are pleasantly mild and fairly wet (10 rainy days on average), with roughly 9.4 hours of sunshine a day. This is peak season for good reason — conditions are close to ideal. For the complete picture, see the best time to visit Seoul — every month compared. Once you know when to go, find your Seoul packing list at 247PackingList.
Get ready for Seoul in May
Search flights to Seoul
Compare 100+ airlines for May — one search, best price.
Search Flights →Thermal travel layers
Pack proper layers — winters are genuinely cold and evenings drop fast year-round.
Check Price →What to pack for Seoul in May
- Light layers
- Sunscreen
- T-shirts and light trousers or shorts
- Compact travel umbrella
- Waterproof jacket
- Quick-dry clothing
- A warm layer for cool evenings
Compare all months in Seoul
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 2.4°C | 30.6mm | 8/10 |
| February | 5.3°C | 19.5mm | 10/10 |
| March | 12.4°C | 52.9mm | 10/10 |
| April | 17.3°C | 62.1mm | 10/10 |
| May | 22.2°C | 128.7mm | 9/10 |
| June | 26.3°C | 193.2mm | 9/10 |
| July | 28.7°C | 274.8mm | 8/10 |
| August | 28.4°C | 401.9mm | 8/10 |
| September | 25.0°C | 195.8mm | 9/10 |
| October | 18.2°C | 74.9mm | 10/10 |
| November | 11.5°C | 72.3mm | 10/10 |
| December | 2.7°C | 26.6mm | 8/10 |
Full month-by-month guide: best time to visit Seoul →
For facts about South Korea — currency, language and dialling code — see our South Korea country guide at 247CountryInfo. Travellers also find it useful to keep a Seoul travel guide to hand. Check clothing sizes in South Korea before you shop.
Frequently Asked Questions
Is May a good time to visit Seoul?
May rates 9/10 for visiting Seoul — excellent time to visit. Expect average highs of 22.2°C, 128.7mm of rain across the month and about 9.4 hours of daily sunshine.
What is the temperature in Seoul in May?
In May, Seoul has average highs of 22.2°C (72.0°F) and average lows of 11.6°C (52.9°F).
Does it rain in Seoul in May?
Some rain is likely. Seoul averages 128.7mm across about 10 rainy days in May, so a light waterproof layer is worth packing.
What should I wear in Seoul in May?
For Seoul in May (22.2°C highs / 11.6°C lows), pack light layers plus sunscreen, t-shirts and light trousers or shorts, compact travel umbrella.
More essentials for Seoul in May
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.