Weather Comparison
Side-by-side weather comparison for May
| Metric | Seoul | Hong Kong | Better |
|---|---|---|---|
| Average HighHigher is warmer | 22°C (72°F) | 28°C (82°F)▲ | Hong Kong |
| Average LowHigher is milder | 12°C (54°F) | 24°C (75°F)▲ | Hong Kong |
| Rain DaysFewer is drier | 8 days▲ | 20 days | Seoul |
| PrecipitationLess is drier | 95 mm▲ | 232 mm | Seoul |
| Sunshine HoursMore is sunnier | 10h/day▲ | 9h/day | Seoul |
| HumidityLower is more comfortable | 65%▲ | 78% | Seoul |
| UV IndexLower is safer | 9 | 9 | Tie |
| Wind SpeedCalmer is better | 16 km/h▲ | 17 km/h | Seoul |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Seoul edges ahead as the better destination in May. Seoul offers 10 hours of daily sunshine with only 8 rain days, while Hong Kong sees 9 sunshine hours and 20 rain days.
Seoul sits in the comfortable travel range at 22°C. Hong Kong is also comfortable at 28°C.
For travelers who prioritize dry weather, Seoul is the stronger choice in May. Seoul receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.
Seoul reaches an average high of 22°C (72°F) and drops to 12°C (54°F) at night during May. The daily temperature range is 10°C, meaning moderate variation throughout the day.
Hong Kong averages 28°C (82°F) for the high and 24°C (75°F) for the low, with a daily range of 4°C. There is a notable 6°C gap between the two cities, so expect a very different feel.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in May.
Seoul receives approximately 95 mm of rainfall across 8 rain days during May. You can expect rain roughly every other day.
Hong Kong sees 232 mm over 20 rain days. That makes Seoul the drier option by 12 rain days and 137 mm of total precipitation.
Humidity also differs: Seoul averages 65% while Hong Kong sits at 78%. Hong Kong will feel muggier, especially at higher temperatures.
Highs of 22°C, lows of 12°C, 8 rain days
Highs of 28°C, lows of 24°C, 20 rain days
The table below shows average high temperatures and rain days for every month. May is highlighted for quick reference.
| Month | Seoul | Hong Kong | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 1°C | 4d | 19°C | 4d |
| Feb | 4°C | 4d | 20°C | 6d |
| Mar | 10°C | 6d | 22°C | 10d |
| Apr | 17°C | 7d | 25°C | 14d |
| May | 22°C | 8d | 28°C | 20d |
| Jun | 26°C | 9d | 29°C | 24d |
| Jul | 28°C | 17d | 30°C | 24d |
| Aug | 29°C | 16d | 30°C | 24d |
| Sep | 25°C | 8d | 29°C | 17d |
| Oct | 19°C | 5d | 27°C | 7d |
| Nov | 11°C | 7d | 24°C | 5d |
| Dec | 3°C | 5d | 20°C | 4d |
Seoul Weather in May
Full forecast, packing tips, and activities
Hong Kong Weather in May
Full forecast, packing tips, and activities