Weather Comparison
Side-by-side weather comparison for September
| Metric | Budapest | Seoul | Better |
|---|---|---|---|
| Average HighHigher is warmer | 21°C (70°F) | 25°C (77°F)▲ | Seoul |
| Average LowHigher is milder | 12°C (54°F) | 16°C (61°F)▲ | Seoul |
| Rain DaysFewer is drier | 8 days | 8 days | Tie |
| PrecipitationLess is drier | 57 mm▲ | 123 mm | Budapest |
| Sunshine HoursMore is sunnier | 9h/day | 9h/day | Tie |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 15 km/h | 13 km/h▲ | Seoul |
Budapest and Seoul are closely matched in September. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.
Budapest sits in the comfortable travel range at 21°C. Seoul is also comfortable at 25°C.
For travelers who prioritize dry weather, both cities are equally dry in September.
Budapest reaches an average high of 21°C (70°F) and drops to 12°C (54°F) at night during September. The daily temperature range is 9°C, meaning moderate variation throughout the day.
Seoul averages 25°C (77°F) for the high and 16°C (61°F) for the low, with a daily range of 9°C. The 4°C difference is noticeable but not dramatic.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.
Budapest receives approximately 57 mm of rainfall across 8 rain days during September. You can expect rain roughly every other day.
Seoul sees 123 mm over 8 rain days. Both cities are equally rainy this month.
Both cities share similar humidity levels at 65%.
Highs of 21°C, lows of 12°C, 8 rain days
Highs of 25°C, lows of 16°C, 8 rain days
Pack for both: light layers, a light jacket for evenings, sunscreen, a packable rain jacket, an umbrella. These items are useful in either destination during September.
The table below shows average high temperatures and rain days for every month. September is highlighted for quick reference.
| Month | Budapest | Seoul | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 3°C | 8d | 1°C | 4d |
| Feb | 6°C | 8d | 4°C | 4d |
| Mar | 11°C | 8d | 10°C | 6d |
| Apr | 17°C | 9d | 17°C | 7d |
| May | 21°C | 12d | 22°C | 8d |
| Jun | 25°C | 11d | 26°C | 9d |
| Jul | 27°C | 10d | 28°C | 17d |
| Aug | 27°C | 8d | 29°C | 16d |
| Sep | 21°C | 8d | 25°C | 8d |
| Oct | 16°C | 8d | 19°C | 5d |
| Nov | 9°C | 9d | 11°C | 7d |
| Dec | 4°C | 8d | 3°C | 5d |
Budapest Weather in September
Full forecast, packing tips, and activities
Seoul Weather in September
Full forecast, packing tips, and activities