Weather Comparison
Side-by-side weather comparison for May
| Metric | Toronto | Lisbon | Better |
|---|---|---|---|
| Average HighHigher is warmer | 17°C (63°F) | 21°C (70°F)▲ | Lisbon |
| Average LowHigher is milder | 9°C (48°F) | 14°C (57°F)▲ | Lisbon |
| Rain DaysFewer is drier | 10 days | 6 days▲ | Lisbon |
| PrecipitationLess is drier | 73 mm | 44 mm▲ | Lisbon |
| Sunshine HoursMore is sunnier | 11h/day | 12h/day▲ | Lisbon |
| HumidityLower is more comfortable | 65% | 65% | Tie |
| UV IndexLower is safer | 9 | 9 | Tie |
| Wind SpeedCalmer is better | 19 km/h▲ | 23 km/h | Toronto |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Lisbon edges ahead as the better destination in May. Lisbon offers 12 hours of daily sunshine with only 6 rain days, while Toronto sees 11 sunshine hours and 10 rain days.
Toronto sits in the comfortable travel range at 17°C. Lisbon is also comfortable at 21°C.
For travelers who prioritize dry weather, Lisbon is the stronger choice in May. Lisbon receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.
Toronto reaches an average high of 17°C (63°F) and drops to 9°C (48°F) at night during May. The daily temperature range is 8°C, meaning moderate variation throughout the day.
Lisbon averages 21°C (70°F) for the high and 14°C (57°F) for the low, with a daily range of 7°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 May.
Toronto receives approximately 73 mm of rainfall across 10 rain days during May. You can expect rain roughly every other day.
Lisbon sees 44 mm over 6 rain days. That makes Lisbon the drier option by 4 rain days and 29 mm of total precipitation.
Both cities share similar humidity levels at 65%.
Highs of 17°C, lows of 9°C, 10 rain days
Highs of 21°C, lows of 14°C, 6 rain days
The table below shows average high temperatures and rain days for every month. May is highlighted for quick reference.
| Month | Toronto | Lisbon | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | -1°C | 10d | 14°C | 9d |
| Feb | 0°C | 8d | 14°C | 8d |
| Mar | 4°C | 9d | 17°C | 8d |
| Apr | 10°C | 11d | 18°C | 8d |
| May | 17°C | 10d | 21°C | 6d |
| Jun | 22°C | 11d | 24°C | 2d |
| Jul | 26°C | 10d | 26°C | 1d |
| Aug | 25°C | 9d | 27°C | 1d |
| Sep | 22°C | 9d | 25°C | 4d |
| Oct | 15°C | 10d | 21°C | 9d |
| Nov | 8°C | 10d | 17°C | 10d |
| Dec | 3°C | 10d | 14°C | 9d |
Toronto Weather in May
Full forecast, packing tips, and activities
Lisbon Weather in May
Full forecast, packing tips, and activities