SeasonMapJeju vs Seoul: which is better, month by month
Seoul beats Jeju in 6 of 12 months — its lead peaks in April (85 vs 71) — while Jeju wins July, August and December; they are within 3 points in January, June and November.
Each place is scored under the lens that suits its type — they are different kinds of destination, so the scores are each place at its own best. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.
Jeju vs Seoul — all 12 months
| Month | Jeju | Seoul | Winner | Gap |
|---|---|---|---|---|
| January | 50Dcold, a little rain | 47Ffreezing, dry | Tie | 3 |
| February | 54Dcold, a little rain | 59Dcold, dry | Seoul | 5 |
| March | 64Ccool, rainy | 74Bcool, a little rain | Seoul | 10 |
| April | 71Bnice, rainy, muggy air | 85Anice, a little rain | Seoul | 14 |
| May | 79Bwarm, rainy, muggy air | 90Swarm, rainy | Seoul | 11 |
| June | 75Bhot, soaked, muggy air | 78Bhot, rainy | Tie | 3 |
| July | 77Bsweltering, soaked, muggy air | 51Dsweltering, soaked, muggy air | Jeju | 26 |
| August | 82Asweltering, rainy, muggy air | 54Dsweltering, soaked, muggy air | Jeju | 28 |
| September | 69Chot, soaked, muggy air | 75Bhot, rainy, muggy air | Seoul | 6 |
| October | 78Bnice, rainy, clean air | 83Anice, a little rain | Seoul | 5 |
| November | 68Ccool, rainy, clean air | 70Bcool, a little rain | Tie | 2 |
| December | 57Dcold, a little rain, clean air | 52Dcold, dry | Jeju | 5 |
A month is a tie when the two are within 3 points. The widest gap is August (82 vs 54). Tap a month for that month's temperature, rain, humidity and air quality side by side.