Busan vs Yeosu: which is sunnier?
🇰🇷 South Korea vs 🇰🇷 South Korea · 126 km apart · long-term climate normals (NASA POWER, 2001–2020)
Busan is the sunnier overall: about 2,112 hours of sunshine a year to Yeosu's 2,024. Yeosu has the higher Sunshine Score in 2 of 12 months, Busan in 1 (9 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Busan | Yeosu | |
|---|---|---|
| Sunshine hours / year | 2,112 | 2,024 |
| Sunniest month | October (77/100) | October (78/100) |
| Nov–Feb average score | 12/100 | 10/100 |
| Jun–Aug average score | 64/100 | 63/100 |
| Rain / year | 1,490 mm | 1,407 mm |
| Warmest sea | 29°C / 84°F | 31°C / 88°F |
| Peak midday UV | 6 (high) | 7 (high) |
Busan vs Yeosu month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Busan | Yeosu | Busan | Yeosu | Busan | Yeosu | Busan | Yeosu | |
| January | 0 | 0 | 6° | 4° | 30 | 29 | 10° | 5° |
| February | 0 | 0 | 8° | 7° | 52 | 48 | 11° | 7° |
| March | 26 | 26 | 12° | 12° | 79 | 69 | 11° | 10° |
| April | 49 | 58 | 17° | 18° | 137 | 114 | 16° | 16° |
| May | 65 | 69 | 21° | 24° | 144 | 119 | 19° | 21° |
| June | 64 | 63 | 24° | 27° | 175 | 164 | 23° | 25° |
| July | 64 | 63 | 27° | 29° | 299 | 295 | 24° | 28° |
| August | 64 | 63 | 28° | 30° | 244 | 264 | 29° | 31° |
| September | 64 | 63 | 25° | 26° | 176 | 157 | 29° | 30° |
| October | 77 | 78 | 21° | 21° | 75 | 67 | 22° | 22° |
| November | 48 | 41 | 15° | 14° | 46 | 47 | 17° | 16° |
| December | 0 | 0 | 8° | 7° | 33 | 34 | 11° | 9° |
The sunnier month by month: Jan even · Feb even · Mar even · Apr Yeosu · May Yeosu · Jun even · Jul even · Aug even · Sep even · Oct even · Nov Busan · Dec even.
When to pick which
- November–February: too close to call — Busan averages 12/100, Yeosu 10/100. Daytime highs are similar (9°C vs 8°C). See the winter sun ranking.
- March–May: Yeosu (average score 51/100 vs 47). Daytime highs are similar (17°C vs 18°C).
- June–August: too close to call — Busan averages 64/100, Yeosu 63/100. Yeosu is the warmer, around 29°C daytime highs vs 26°C.
- September–October: too close to call — Busan averages 71/100, Yeosu 71/100. Daytime highs are similar (23°C vs 24°C).
Sea temperature
Yeosu's sea gets warmer: 31°C / 88°F at its peak vs 29°C. Swimmable water (21°C+): Busan about 5 months a year, Yeosu about 6 months a year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Busan weather by month · Yeosu weather by month · Best time to visit South Korea.
More comparisons: Busan vs Daegu · Busan vs Ulsan · Yeosu vs Gwangju · Yeosu vs Ulsan · Yeosu vs Jeju City · all head-to-heads