Weather Comparison
Side-by-side weather comparison for May
| Metric | Cancun | Sydney | Better |
|---|---|---|---|
| Average HighHigher is warmer | 29°C (84°F)▲ | 19°C (66°F) | Cancun |
| Average LowHigher is milder | 25°C (77°F)▲ | 12°C (54°F) | Cancun |
| Rain DaysFewer is drier | 14 days | 7 days▲ | Sydney |
| PrecipitationLess is drier | 91 mm | 46 mm▲ | Sydney |
| Sunshine HoursMore is sunnier | 12h/day▲ | 9h/day | Cancun |
| HumidityLower is more comfortable | 78% | 70%▲ | Sydney |
| UV IndexLower is safer | 9 | 2▲ | Sydney |
| Wind SpeedCalmer is better | 19 km/h | 15 km/h▲ | Sydney |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Sydney edges ahead as the better destination in May. Sydney offers 9 hours of daily sunshine with only 7 rain days, while Cancun sees 12 sunshine hours and 14 rain days.
Cancun can feel quite hot at 29°C, so plan for heat. Sydney is also comfortable at 19°C.
For travelers who prioritize dry weather, Sydney is the stronger choice in May. Cancun receives 3 more hours of sunshine per day, which matters for sightseeing and outdoor activities.
Cancun reaches an average high of 29°C (84°F) and drops to 25°C (77°F) at night during May. The daily temperature range is 4°C, meaning relatively stable temperatures from day to night.
Sydney averages 19°C (66°F) for the high and 12°C (54°F) for the low, with a daily range of 7°C. There is a notable 10°C gap between the two cities, so expect a very different feel.
Cancun is in the Northern Hemisphere while Sydney is in the Southern Hemisphere. This means they experience opposite seasons, which explains any large temperature difference.
Cancun receives approximately 91 mm of rainfall across 14 rain days during May. You can expect rain roughly every other day.
Sydney sees 46 mm over 7 rain days. That makes Sydney the drier option by 7 rain days and 45 mm of total precipitation.
Humidity also differs: Cancun averages 78% while Sydney sits at 70%. Cancun will feel muggier, especially at higher temperatures.
Highs of 29°C, lows of 25°C, 14 rain days
Highs of 19°C, lows of 12°C, 7 rain days
The table below shows average high temperatures and rain days for every month. May is highlighted for quick reference.
| Month | Cancun | Sydney | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 25°C | 11d | 26°C | 9d |
| Feb | 26°C | 8d | 25°C | 10d |
| Mar | 27°C | 7d | 24°C | 10d |
| Apr | 28°C | 7d | 21°C | 8d |
| May | 29°C | 14d | 19°C | 7d |
| Jun | 29°C | 19d | 16°C | 8d |
| Jul | 30°C | 18d | 16°C | 6d |
| Aug | 30°C | 21d | 17°C | 5d |
| Sep | 29°C | 24d | 19°C | 6d |
| Oct | 28°C | 21d | 21°C | 8d |
| Nov | 27°C | 12d | 23°C | 9d |
| Dec | 26°C | 11d | 24°C | 9d |
Cancun Weather in May
Full forecast, packing tips, and activities
Sydney Weather in May
Full forecast, packing tips, and activities