Busan · AutumnMonth summary
Busan weather in September
✅ Good
🌡️ Temperature min / max
68°F – 79°F
🌧 Rainy days
44% of days
☀️ Sunshine
9.1h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.5/10
📅 📅 Best month
May (7.8/10)
Quick decision
Should you visit Busan in September?
✅ Good
✅ Yes if: you want shoulder-season value — fewer crowds, 26°F.
❌ No if: you need maximum sunshine — some overcast days are possible.
Our take: Favourable conditions in September (7.5/10). May scores higher but the gap is small.
By trip type
Busan in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ✅ Good
- 💰 💰 Budget : 🌿 Shoulder
Local context
What to expect in September
Autumn in Busan is often underrated: 26°F, golden light and declining crowds. An interesting window. Expect rain on 44% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if May (7.8/10) remains theoretically better.
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All months for Busan
Annual table
Month-by-month comparison
| Month | Min °F | Max °F | Rain % | Precip in | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌫️ January | 27°F | 45°F | 12% | 0.1in | 9.0h | 5.5/10 |
| 🌫️ February | 28°F | 46°F | 18% | 0.1in | 10.0h | 5.7/10 |
| ⛅ March | 39°F | 57°F | 27% | 0.1in | 10.3h | 7.0/10 |
| 🌤️ April | 48°F | 64°F | 26% | 0.2in | 11.4h | 7.3/10 |
| 🌤️ May | 55°F | 72°F | 28% | 0.2in | 11.4h | 7.8/10 |
| 🌤️ June | 64°F | 79°F | 38% | 0.3in | 10.8h | 7.8/10 |
| 🌤️ July | 73°F | 82°F | 53% | 0.4in | 10.3h | 7.6/10 |
| 🌤️ August | 75°F | 86°F | 52% | 0.3in | 12.0h | 7.5/10 |
| 🌤️ September | 68°F | 79°F | 44% | 0.3in | 9.1h | 7.5/10 |
| 🌤️ October | 55°F | 70°F | 22% | 0.1in | 10.0h | 7.6/10 |
| ⛅ November | 41°F | 59°F | 13% | 0.1in | 9.6h | 7.1/10 |
| 🌫️ December | 28°F | 46°F | 12% | 0.0in | 9.0h | 5.8/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Busan averages 79°F, 44% rainy days and 9.1h of sunshine per day. Overall weather score: 7.5/10.
See methodology →
Comparison
September vs May (best month)
The best month is May (score 7.8/10). Difference:
- 🌡️ Max temperature : -4°F
- 🌧 Rainy days : -16%
- ☀️ Sunshine : +2.3h/day
FAQ
FAQ — Busan in September
Is September a good time to visit Busan?
September is an excellent time to visit Busan (score 7.5/10). With 79°F, 9.1h of sunshine and 44% rain, conditions are very favourable.
What to do in Busan in September?
With 79°F max and 9.1h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
Activities and tours in Busan
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