Weather Comparison
Side-by-side weather comparison for May
| Metric | Brussels | London | Better |
|---|---|---|---|
| Average HighHigher is warmer | 18°C (64°F)▲ | 17°C (63°F) | Brussels |
| Average LowHigher is milder | 9°C (48°F)▲ | 8°C (46°F) | Brussels |
| Rain DaysFewer is drier | 12 days | 10 days▲ | London |
| PrecipitationLess is drier | 63 mm | 52 mm▲ | London |
| Sunshine HoursMore is sunnier | 11h/day▲ | 10h/day | Brussels |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 10 | 10 | Tie |
| Wind SpeedCalmer is better | 19 km/h▲ | 20 km/h | Brussels |
Brussels and London are closely matched in May. 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.
Brussels sits in the comfortable travel range at 18°C. London is also comfortable at 17°C.
For travelers who prioritize dry weather, London is the stronger choice in May. Brussels receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.
Brussels reaches an average high of 18°C (64°F) and drops to 9°C (48°F) at night during May. The daily temperature range is 9°C, meaning moderate variation throughout the day.
London averages 17°C (63°F) for the high and 8°C (46°F) for the low, with a daily range of 9°C. The two cities feel quite similar in terms of temperature.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in May.
Brussels receives approximately 63 mm of rainfall across 12 rain days during May. You can expect rain roughly every other day.
London sees 52 mm over 10 rain days. That makes London the drier option by 2 rain days and 11 mm of total precipitation.
Both cities share similar humidity levels at 65%.
Highs of 18°C, lows of 9°C, 12 rain days
Highs of 17°C, lows of 8°C, 10 rain days
Pack for both: warm layers, a mid-weight jacket, long trousers, waterproof jacket, compact umbrella, waterproof shoes. These items are useful in either destination during May.
The table below shows average high temperatures and rain days for every month. May is highlighted for quick reference.
| Month | Brussels | London | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 6°C | 12d | 7°C | 11d |
| Feb | 7°C | 11d | 8°C | 10d |
| Mar | 11°C | 12d | 10°C | 10d |
| Apr | 14°C | 11d | 14°C | 11d |
| May | 18°C | 12d | 17°C | 10d |
| Jun | 21°C | 12d | 20°C | 10d |
| Jul | 23°C | 12d | 22°C | 11d |
| Aug | 22°C | 12d | 21°C | 10d |
| Sep | 19°C | 11d | 19°C | 9d |
| Oct | 15°C | 11d | 15°C | 11d |
| Nov | 10°C | 12d | 10°C | 11d |
| Dec | 7°C | 13d | 8°C | 11d |
Brussels Weather in May
Full forecast, packing tips, and activities
London Weather in May
Full forecast, packing tips, and activities